★ 1

If I could give this gym negative stars I would. I ignored previous reviews and still signed up because of the convenient location. Aggressive sales people who try to push extra services (they're supposedly "trainers"). Not as clean as it should be. Sauna has been "under construction" since forever. Staff isn't helpful. I liked the machines, but don't expect to be clean. The nightmare started when I cancelled. I called the gym AND emailed them with (30) days notice. I have been charged (5) times since then for an assortment of bogus charges. Different answers from different people depending on who answers the phone. I had to file a claim with my bank, I filed a complaint with the Better Business Bureau, I've had to invest a lot of time to unravel this mess. They are in violation of the Federal Trade Commission laws that were enacted earlier this year. They get away with it because no one calls them out. Until now. My next email is to the FTC. There are other gyms in the area, don't waste your time and money here.FYI, this is the one and only negative review that I've ever written in my life.

Source: Google

★ 1

This place is a SCAM — stay away!

Do NOT go to this gym.

The manager has zero respect for customers and will harass and bully you the moment you try to cancel your membership.

I tried to cancel and was told I needed to give a 30-day notice. Fine — I paid for the extra 30 days. But during that entire month, they never scheduled my sessions, never followed up, and ignored me completely.
After a 6-month freeze, they charged my account without my authorization. When I asked for a refund, they refused. They will take your money and then avoid all responsibility.
Do NOT give them your bank details.
Do NOT sign up.
Do NOT trust this gym.
Save yourself the stress and go somewhere that respects its customers.

Source: Google

★ 4

Restroom needs to clean

Source: Google

★ 5

Source: Google

★ 5

Solid gym and staff.

Source: Google

★ 5

I’ve been a member at Curl Fitness for a while, and I can honestly say this is one of the best gyms I’ve ever joined. The facility is always clean and the equipments are more superior than other gyms I’ve known.
I felled down six seven times a year with a weak leg. Ever seen I met my trainer, Lily, I no longer fall again. She is fantastic and very knowledgeable on building your muscle and at the same time helps you to maintain a proper posture. After joining its training program, I have improved greatly in my physical health!!!
Highly recommend this gym and its training program to you!!!

Source: Google

★ 4

The Zumba, yoga, and weight trainings instructors are all great!!

Source: Google

★ 5

I like this Diamond Bar Curl. Love the daily zumba classes, punch on the punch bag and relax on the hydro massage bed. All the zumba moms are friendly and kind. The zumba instructors are awesome, too! I go zumba 5 times a week.

Source: Google

★ 1

By reading the reviews It is a good forewarning that the billing practices here are questionable. And I think the people that posted warning others of their dismay. I appreciate the forewareness.

Source: Google

★ 1

They finally changed the direction of their smith machines. Although this was not my only issue with this gym. I was told to change my review by the manager lol. Which is not only weird but very unprofessional, and frankly made me mad. You can’t intimidate people into lying for your reputation. If you want better reviews.. BE better. I read another review saying the same thing, begging for better reviews. But I want to be honest and I don’t think taking down my review will change their 2 star average 😂 Anyway, the other smith machine doesn’t work correctly and gets stuck. A few people in the gym have even talked to me about this and have said they’ve reached out to management multiple times and nothing has been fixed. Still waiting for the dry sauna that was promised when I signed up about 5 months ago and specifically bought my pass for. Most of the employees seem polite, there is one girl always at the front who looks miserable at all times and has an attitude. Some of the personal trainers look like they have no experience in a gym whatsoever and train their clients wrong. There’s a few that know what they’re doing but I often see other trainers using incorrect/horrible form with their clients and going wayy too heavy on weight which is the first thing you learn as a personal trainer. There is one trainer that makes me uncomfortable as I catch him staring at me (and other girls a lot) even when I am working out/when he is training clients, so I try to avoid eye contact (he’s been there since it used to be crunch fitness). There are honestly so many bad reviews for this gym and I don’t think it’s without reason. I moved gyms because I moved back home and this one is closer to me. I have been apart of many gyms and being completely honest this one is just convenient. I was going to chuze fitness before this and honestly it was so much better AND cheaper and the people are happier and more helpful. Kinda wish I stayed. Paula is very cool and sweet though and knows what she’s doing had to shout out my girl :) I also think it’s funny how all the bad reviews have numerous likes and all the good ones have no likes. The reviews speak for themself. But there you go, I changed my review as “requested”

Source: Google

★ 5

I used to come to Curl Fitness as my friend’s guest, using the machines while she attended classes. After the gym was remodeled, I decided to sign up for my own membership. I really enjoy that I’ve been able to build a consistent exercise habit here. Now I attend all the morning classes—not just because I need the exercise, but also because the Zumba and Yoga instructors are far too wonderful to miss!

Source: Google

★ 1

-UPDATE 8/15/2025
Ran into another member that I met at curl what the member said was that the workers literally just sit there, giving attitude, don’t greet you or say anything as you leave. They don’t even check if people check-in.

-UPDATE:
I was working out at 24 hour fitness and I ran into a familiar face that I had met at curl fitness. The former member told me that the reason for departure was that the workers had an ego.

A gym that begs its members or potential members to leave a good rating. A gym where the workers don’t do anything. A gym where workers play favorites. A gym where workers will refuse to leave notes for the manager. A gym where the manager will automatically side with the workers.

Honestly, I couldn’t care less if my membership gets reinstated or not because I already knew that once the manager says, “I’ve heard from my workers….”, It’s already a done deal.

(In the eyes of the manager the workers are absolutely without flaw even when they’re just sitting and snacking on food and gossiping with and about members)

Source: Google

★ 5

Curl Fitness is one of the best gyms in the area. They have a ton of machines for cardio and strength equipment. The restrooms and locker rooms are clean and big, and the staff is super friendly and the community is really supportive.

Source: Google

★ 3

Did more difficult class like do in morning at night have Zumba Yoya 1 weight class on Wednesday 1 my favorite where have class very dirty weight area dusy same locker room they have good instructions need get Bodycom bat a kick boxing a relly one not kind thet had before people different things wrong some on the right on left it wa only 30 all other gyms 1 hour everyone do the same thing the manager not good

Source: Google

★ 5

Best Gym ever!! Management is awesome the front desk people are so nice and helpful 🙌
Highly recommend coming to this gym !

Source: Google

★ 5

Buen gimnasio, la gente es muy amable y el lugar está bien equipado, máquinas nuevas 💪🏽🫡

Source: Google

★ 5

Been going to this gym since it opened under Crunch Fitness. It has since turned into a Curl Fitness and the improvements are amazing. There is plenty of equipment and free weights and it never gets too crowded. The staff are very helpful, especially the manager Gus, who recently went out of his way to correct a billing error promptly. Highly recommend.

Source: Google

★ 5

Love this gym; clean and is a huge upgrade from what it was before. The staff is here is actually helpful, attentive and always go out of their way to help

Source: Google

★ 1

VERY SUSPICIOUS BILLING METHODS DO NOT APPLY FOR THIS GYM.

Update August 6:
STILL no sauna. Aggressive and unhelpful workers. They called to mediate the situation, I left far more furious because they did NOT help. Huge scam, stay away.

Update April 21:
Just found out the “discount” I got for my membership back in December is just normal pricing, except I’m the fool for getting conned almost $200 (+lock-in fee) to pay for services that doesn’t exist (no red light still, no sauna, dodge my question when I ask, consistent rude attitude from the workers.) I desperately want to cancel my membership but I’ve paid a stupid amount for the lock-in fee.

Old review:
Since there’s so many suspicious reviews both negative (they were posted before the gym was barely opened) and positive (five stars all within the same week), I’ll give me two cents.

PROS: Visually, I prefer this gym over Planet Fitness. I like the aesthetic and lighting. They have a decent collection of machines and everything is kept quite clean. I think the variety of classes are really nice, and all the teachers I’ve tried have great vibes! (They told me two months ago they will add more classes; this is a lie. I wish they stopped coming up with so many excuses.)

CONS: They make promises they can’t keep. When I asked about their sauna, they kept making excuses saying it’ll come in February. Hey, it’s March now. No sign of a sauna or any construction happening any time soon. The water massage beds are in this weird, dinky corner so I always forget about them.
I’ve spoken to four workers there in hopes to make just small talk and get to know them, but it ALWAYS circles back to them trying to sell me their services. “Why don’t you have a trainer?” And then proceed to shame me for my choice to not get one. Every conversation with them always ends with an attempt at a sale, and frankly their prices feel REALLY high compared to other gyms with far more qualified trainers. When I brought up the price, they offered me shorter sessions at a “discount”… do the math and it’s the same price per hour as the normal sessions. At least my friend got a nice discount for her membership when she signed up. $12 a month is pretty nice.

Today I attempted to use the InBody machine to check my weight and muscle mass. Took forever to recalibrate, and when I did check, the machine was COMPLETELY off. Brought it up with an employee, and guess what? “Oh, did you work out before weighing in? Yea that might affect it.” You got to be kidding me. I’ve used the machine after my workout for the previous times and there was no issue. My weight should not be 15 pounds below what I know should be my actual weight. And they had the gall to make an excuse, saying it’s somehow MY fault the machine isn’t calibrated? It’s ok if the machine isn’t working; I’m upset at the constant lies/excuses the employees come up with.

So why am I paying $40 a month for the extra services that does not exist? This gym will try to market itself as something it is not. It’s a fine gym, just stop making these lame excuses.

Summary: A gym that’s constantly trying to sell you stuff, doesn’t have a sauna (update April 2025 still no sauna), machines they claim is new and yet some squeak/ have broken wires after four months.

Previously rated it three stars, the more I visit the more upset I get about my membership here.

Source: Google

★ 5

This gym goes above and beyond with both customer service and facility management! Management is always first to greet with a great attitude! Overall this facility has numerous option for exercising and relaxing 10/10

Source: Google

★ 5

Originally planned on cancelling when the previous facility (Crunch) was closing, however I was promised my rate would be "grandfathered" in so I stayed. So far very happy with my decision. They have newer machines and anytime a machine is broken its promptly fixed within a week or two. This is a big step up from the old facility. AC actually feels like it is working as well. At Crunch it used to feel like they did not turn the AC on in the summer. I've been coming in since November and I have no complaints.

Source: Google

★ 1

When I asked about canceling early, the salesperson told me I just needed to give 30 days’ notice with no penalty. I followed that process and requested cancellation in mid-May. However, I was still charged $29.99 for June. When I questioned it, they claimed that the “last month” payment I made at signup only applies to December 2025—not the month I leave. This directly contradicts what I was told.

Later, they charged me a $99.00 termination fee, plus a $15.00 late fee, without any clear explanation. I had already provided all my bank information so they could withdraw the monthly fees directly from my account. Since they were authorized to charge me at any time, why was I still assessed a $15.00 late fee?

I asked the manager, Gustavo, to refund the unreasonable $15.00 late charge. However, he refused—unless I agreed to re-sign a month-to-month contract, which would require paying another first and last month’s fee. This kind of coercion is both manipulative and unethical, and it raises serious concerns about the gym’s business practices.

For the five months I worked out (January–May), I paid:

First and last month: $59.98

Annual fee (charged in the 4th month): $49.99

Monthly fees (2nd to 6th month): $149.95

Termination fee: $99.00

Late fee: $15.00

Total: $373.92 for 5 months

Is this a scam—or, at the very least, an unethical business practice?

Source: Google

★ 1

They advertise “$0 down” and “no enrollment fee,” but that’s not the full truth. When I signed up for the PREMIER plan at $29.99 with a 1-year contract on January 1, 2025, I had to pay both the first and last month’s dues ($59.98 total) and was later hit with an unexpected annual fee of $49.99 in the fourth month.
When I asked about canceling early, the salesperson told me I just needed to give 30 days’ notice with no penalty. I followed that process and requested cancellation in mid-May (due to the locker humiliated and upset incident). However, I was still charged $29.99 for June. When I questioned it, they claimed that the “last month” payment I made at signup only applies to December 2025, not the month I leave — which contradicts what I was told.
It feels like a bait-and-switch, and I would not recommend this gym.

Source: Google

★ 1

I accidentally left my belongings (Air Pods, shoes, tracksuit, and gloves) locked in a locker overnight. When I returned to Curl the next day, all of my items were gone. They had cut my combination lock and emptied the locker without any warning or eviction notice. There were no signs warning members not to leave belongings in lockers overnight.
I asked management where I could retrieve my items or whether they might be in the Lost and Found. The front desk staff member, Aneesa, told me they had no idea where my belongings were. She even suggested I check the dumpsters in the back alley. I felt humiliated and upset.
How can a state-of-the-art gym like Curl Fitness Diamond Bar treat a member this way? I found their response rough and unsympathetic. I have requested to terminate my membership immediately. I no longer feel comfortable and have no desire to return.

Source: Google

★ 5

Source: Google

★ 5

I want to give a heartfelt thank you to Faith and Gustavo at Curl Fitness Diamond Bar, for their outstanding support and service. I had a lingering billing issue that originated with the previous gym, Crunch, during the transition to Curl. Crunch was supposed to handle it, but unfortunately, they never followed through.

Since I travel frequently for work, my schedule is pretty limited. When I finally had the chance to reach out, Faith and Gustavo stepped in right away and resolved everything quickly and professionally. They were incredibly accommodating and made the whole process stress-free.

It's rare to find such genuine customer care, and I truly appreciate their help. Thanks to them, I'm happy to be part of the Curl Fitness family once again.

Source: Google

★ 4

Nice little gym with unique machines and friendly staff for the most part. My only issues are that sometimes the opener will show up late and the showers don't have hot water. This is not super convenient when I have to head to work right after my 5am workout. Other than that, no complaints.

Source: Google

★ 1

Don’t come to this gym. Extremely scammy business tactics.

I was grandfathered in to Curl from when this was a Crunch fitness. If I wasn’t, I’d definitely have been charged more fees for cancelling.

You’ll be forced to come in person to cancel so if you moved cities like me, better do it asap.

ALSO you’re going to have to cancel 30 DAYS before your next billing date, or else they’ll charge you again … which is absolutely stupid.

No one will remind you of that policy when you cancel. I called after getting charged again, and the guy I talked to on the phone is a liar for saying they remind customers about this when you cancel… I was never reminded of it.

Curl SUCKS. Just go to Planet Fitness… you can use your credit card to pay for the membership through the app.

Source: Google

★ 5

Source: Google

★ 5

Positive introduction to membership/personal trainings. Staff know what they are doing and appreciate the environment they create. I grew up in Diamond Bar and it's nice to see this new atmosphere thrive. Good energy

Source: Google

★ 5

I came to inquire about a gym membership and they offered me a free car. Being an upstanding citizen, I had to say no, but they insisted I take a horse-drawn carriage at the very least

A little late to work everyday now, but nothing beats traveling in stable- I mean in style

Excellent gym with top of the line equipment for all masochists who want to punish their bodies in the most efficient ways possible!

Source: Google

★ 2

This location used to be a Crunch.
It became Curl Fitness and operated on 10/11 (ten days after the supposed opening date).

During opening week:
- Explicit music was playing non-stop.
- No functioning fountain (yes, I'm aware it was a soft grand opening); it was finally installed mid-November.

📻The gym uses "Pandora for Business".
Worker 1 will play straight rap/hip-hop, Drake, Rihanna, Pop Smoke, etc.
Worker 2 plays house, rave-type, Post Malone, depressing music.
Worker 3 plays reggaeton, soft music, and adult hits.

🎸You will never hear grunge, alternative, or classic rock/metal unless it's requested or when they 'feel like it'. Edit: There's a worker on weekends that plays modern rock.

🧼Evening time, workers do not periodically check empty cleaning bottles. You have to verbally let them know; same thing when it was Crunch.

⏳️Still waiting on four new machines and the spa, as of 12/21/2024.

⚠️REMEMBER: they close at 9PM Fridays and 7PM weekends. Can't tell you how many times I've been screwed over by this, esp. the 9p Fri.

ℹ️YES, Lolicup will still accept your Crunch tag/barcode for the 10% discount!!

3/3/2025 - Last of the new machines (I think) added. A few for legs and two for back.

3/31 - Punching bag added.

🛑I stopped going in March so I can't give any further updates! Sorry!🛑

Source: Google

★ 1

Very arrogant front desk employees. I was discriminated upon and not allowed a tour of the gym, and they just insisted on me to sign up and charge me extra fees that were not mentioned on their website!!!

Source: Google

★ 1

Continuously charged me for membership that I had already cancelled.

Source: Google

★ 2

Beware and come to this location with caution around the 4pm-9pm hours. NOTHING BUT GROUPS OF PEOPLE TALKING INCKUDING THE WORKERS... It's like they treat the gym like it's a club🤣 it's honestly embarrassing as a franchise. Workers usually don't care and are just eating or talking to the women that come to workout here lol.

ASIDE from those negatives... it a great gym, the machines are amazing and everything is top quality... Love the gym, wish the crowd and workers were just more considerate.

Source: Google

★ 1

You absolutely will be billed after canceling.
Confirmed with emails and photographed statements.

Source: Google

★ 1

I am an old woman, last yr They told me lies that in a week they will have a dry sauna, for which I joined this place. After 3 months of lies I cancelled the curl fitness club in Diamond Bar , but they continue charging my bank account from $25 / month to $107/month. I called my bank and stop the payment, and planing to file a police report as well as report to the consumer Affairs, it’s a scam and theft..

Source: Google

★ 1

My credit card has been repeatedly charged despite canceling my membership months ago. This is terrible and feels like a scam

Source: Google

★ 3

The operating hours should remain consistent throughout the week, without shorter hours on Fridays and weekends. Additionally, be aware that after three months of no-contact membership, there is an annual fee of $75. This was not disclosed to me when I signed up for the gym, which highlights some hidden charges. While the facility has been upgraded by the new owner, the bathroom area is outdated compared to the rest of the gym. They also need to add some mats for stretching, as every gym should have that.

Source: Google

★ 1

False advertisement. No sauna, no red light therapy, and no tanning.

Source: Google

★ 5

Cannot ask for anything else. This is a wonderful new gym with all latest equipment. Love the vibe and extremely helpful staff. They have the best classes. Definitely recommend everyone to check it out.

Source: Google

★ 1

I was a long-time member of Crunch Fitness, but after they were taken over by another company and rebranded as Curl Fitness, they stopped honoring the contract price I had with Crunch and wanted to raise the price. The service here is really bad,And the manager here is very rude.

Source: Google

★ 5

It was an excellent gym everything is really good.
But the water sometimes is warm .

Source: Google

★ 1

The environment and equipment are fine, but the service here is absolutely terrible. I truly regret it—I’ve already switched to another gym.

Source: Google

★ 1

Signed up for a free trial membership to the check out the gym since it's closer to my house. Only to be told they aren't doing trial memberships despite it literally being on their website.

Source: Google

★ 1

Kept getting charged after I cancelled and had to contact my bank to stop getting charged. Small gym so not a lot of equipment compared to other places.

Source: Google

★ 5

This gym is so amazing! The energy is great. They made the transition super simple from the previous gym. And they have such a variety of equipment. Always kept clean. The Manager Gustavo has been very understanding & accommodating with some of my wife and I concerns. Definitely go check it out if you’re in Diamond Bar!

Source: Google

★ 1

Will keep charging you even after you cancel. Staff members lie and cover for the manager saying he isn't around or "in a meeting". All the good reviews you see are because they give their few members incentives for good reviews. It's a small gym, terrible music, and unmotivating staff

Source: Google

★ 5

Perfect gym experience. Amazing location, friendly staff, super clean, beautiful, brand new equipment, a ton of classes, clean luxurious locker room and showers. Curl Fitness gets it done right. This club is beautiful. The recent remodel puts them at a whole other level than the rest of the gyms around and it’s not even close. Always greeted with a smile and leave having a great day/ evening afterwards. Overall the best gym in the area. Got to check it out!

Source: Google

★ 5

i love that gym that best and that area super clean and workers super friendly.

Source: Google

★ 5

Loving the atmosphere Curl Fitness is providing. The remodel looks amazing, equipment is new and clean. This gym has been awesome so far ! If you’re looking for a gym, Curl is the best option!

Source: Google

★ 5

This gym is the bomb! Hands down the BEST gym around! You have to visit Curl Fitness if you love working out or if you are looking to get in shape. The gym is always super clean and organized. Personal trainers move with purpose. Very motivating. They go around and clean machines every couple minutes it seems like, and the GM Gus was such a great help, providing nothing but the best service with a smile! Highly recommend to check out Curl. This gym is AWESOME!

Source: Google

★ 5

Best gym New equipment awesome staff the remodel looks amazing l definitely would recommend this gym

Source: Google

★ 5

I don't usually write reviews good or bad but my experience at Curl Fitness has been amazing. I'm greeted by Faith every morning as well as most team members. The facility is always clean and so far, I have yet to wait for a machine. I highly recommend at the very least checking out this location.

Source: Google

★ 5

WOW! Curl fitness knows how to do it right! The staff is so welcoming and already knows me by name. I once worked out at a curl fitness when I was staying down at the beach and loved it! Then when I found out the Diamond bar crunch was bought and Remodeled by Curl I was so excited! Clean, Modern and Family friendly!

Source: Google

★ 5

I recently moved to the area and was looking for a new gym which ended quickly. The staff here overall is so welcoming and takes the experience to another level from other companies. They care about their members and it's so clearly felt! This gym is incredibly clean and they will have everything you need to reach your goals. Lifelong fan of Curl Fitness now!

Source: Google

★ 1

I ended up with this membership unwillingly when this site was Crunch Fitness. The only email notice I got regarding the transfer of membership was the email telling me grand opening of Curl. The staff here was no help in getting my membership canceled. I had moved away so going in person was not an option. I finally got the chance to come down here today and the 2 workers were literally just lying to my face about the managers whereabouts. First it was that he was on lunch and then it was that he was in a meeting - 30 minutes turned into an hour. Anyway screw this gym and it's messed up staff. Definitely do not recommend not only this gym franchise but particularly this branch in Diamond Bar. Experience rated 0/100

Source: Google

★ 1

Source: Google

★ 1

will continue to charge you after canceling membership. shady business.

Source: Google

★ 1

I canceled my membership a month in advance and was still charged an extra month, do gyms really have to survive on this kind of fee?What a shame!

Source: Google

★ 5

New member here! So far good. Signed up this week thanks to the great rate and service by Ms. Hall. Came for my first morning workout and felt welcomed as there is a group of people that all positive and interact. Looking forward to the equipment/amenities to come, especially the sauna. They got little things that are important to me like classes and IBody Scan machine. I think the opening discount option is available till November 28th so get in here before Thanksgiving, besides there no need to wait to get in shape. Enjoy!!!

Source: Google