Verithiathe honest score on any app
Updated July 2026 · real, multi-region App Store reviews
The verdict on

Muscle Booster Workout Tracker

55
User verdict / 100 High confidence Divided

Muscle Booster offers customizable workout routines and has helped many users achieve fitness goals, but it faces significant criticism for its subscription practices, including unclear auto-renewals and difficulty canceling, alongside persistent technical glitches.

4.5★ lifetime (135,307) Free + in-app purchases since 2018 by WELLTECH APPS LIMITED updated 0.1 mo ago recent negative 47% 120 reviews across 2 regions
Subscription & Billing Workout Effectiveness & Customization App Performance & Bugs Onboarding & Trial Gender-Specific Content
5★69
4★29
3★8
2★12
1★82
recent reviews across 2 regions, vs the 4.5★ lifetime average

Muscle Booster is a fitness app that provides personalized workout plans, animated guides, and tracking features, with many users reporting positive results in weight loss and toning. However, a substantial number of recent reviews highlight serious issues with billing, hidden auto-renewals, and technical problems, which contradict the developer's recent update notes.

What users like

  • Workouts are effective for weight loss, toning, and strength buildingR3R6R34R45
  • Offers customizable workouts, difficulty levels, and exercise substitutionsR5R7R16R29
  • Provides motivation and helps establish consistent workout routinesR2R6R35R68
  • Includes animated guides and clear instructions for exercisesR2R49R68R76
  • Good customer service for some users in resolving issuesR11R24R30R55

What users complain about

  • Frequent issues with fraudulent charges, unapproved auto-renewals, and difficulty canceling subscriptionsR9R17R19R28
  • Numerous technical glitches, including app crashes, videos not loading, sound issues, and Apple Watch syncing problemsR20R33R92R133
  • Lack of a free trial or ability to preview content before paymentR25R44R51R117
  • Workouts may not be suitable for individuals with health limitations or specific needs, with limited alternatives for exercisesR1R43R66R105
  • Perceived as not well-tailored for women, with fewer options for gym or machine workoutsR12R21R93R149
  • Some users report poor or unhelpful customer service regarding refunds and technical issuesR19R92R107R143

Latest update · v3.78.0

What the developer says changed (the verdict above weighs this against what reviewers report):

We've been busy making Muscle Booster even better! This update fixes bugs and improves performance so your workouts feel effortless. Thanks for training with us, your dedication keeps us going. Loving the app? A quick rating or review means the world to us (and yes, we read every single one)!

Recurring themes

Subscription & Billing negative
Many users report being charged without consent, experiencing hidden auto-renewals, and facing extreme difficulty canceling subscriptions or obtaining refunds. Some mention fraudulent charges and being charged for services not requested.R9R17R19R22
App Performance & Bugs negative
Users frequently encounter glitches such as videos not playing, app crashes, lack of sound, and syncing issues with Apple Watch, despite recent developer notes claiming bug fixes.R20R33R85R92
Workout Effectiveness & Customization positive
Many users praise the app for its effective workouts, reporting significant weight loss, toning, and increased strength. The ability to customize routines, adjust difficulty, and substitute exercises is highly valued.R3R5R6R7
Onboarding & Trial negative
Users are frustrated by the lack of a free trial or preview, often having to answer many questions only to find out the app requires payment without a chance to test it.R8R25R37R38
Gender-Specific Content negative
Some female users feel the app is not well-designed for women, offering limited options for gym or machine workouts and having better animations/options when switching to a male profile.R12R21R93R149

Who it's for

Muscle Booster is for individuals looking for customizable home workout routines, especially those new to fitness or seeking motivation and structure R6R29R35. It's also suitable for users who appreciate animated exercise guides and tracking features R2R68. It is not for users who expect a free trial, are wary of auto-renewing subscriptions, or have specific health limitations that require highly specialized exercise alternatives R1R43R105R117.

Evidence note: The recent reviews skew heavily negative, particularly concerning billing and technical issues, which contrasts with the high lifetime rating. The developer's notes mention bug fixes and performance improvements, but many recent reviews directly contradict these claims, indicating ongoing technical problems.

Frequently asked

Is Muscle Booster a free app?
No, Muscle Booster is not a free app; while it may appear free to download, users report having to answer many questions before being prompted to pay for a subscription, with prices mentioned around $20 for one month or $34.95/month R7R44R51R117.
How do I cancel my Muscle Booster subscription?
Many users report significant difficulty canceling their Muscle Booster subscription, with some stating the auto-renewal option is hidden within the app itself rather than in iPhone settings, leading to unexpected charges and refusal of refunds R19R48R107R125.
Does Muscle Booster work with Apple Watch?
Some users have experienced issues with Muscle Booster syncing with their Apple Watch, with one reviewer noting it stopped working after a recent update R20R82R195.

What reviewers actually said

Built only from these 120 real reviews (foreign ones translated). Superscripts jump to the quote here. Apple has no per-review links, so [ref] opens that app's reviews on the App Store.

  1. [R3] 5/5 · US Great workouts: I have been using this for about 8 months and I love it. It has helped myself and my husband to tone and lose the weight we wanted to. The ten minute workouts when done regularly really do make a difference. My husband started first and it helped him that I got my own subscription. With healthy eating and this plan I have lost 20 lbs and counting. I have toned and lost inches which
  2. [R6] 5/5 · US Totally Hooked: I started Muscle Booster as a way to ease into fitness. I knew I had to do something but all the other apps seemed so overwhelming. I started with a beginner program for an 8 minute routine. I woke up early as the time was not an overwhelming ask. I am hooked. I do 1 routine each day and sometimes 2. I love how I feel. I love my clothes fit better. I love how this 1 app has m
  3. [R34] 5/5 · US Great Workout: I have been using this app for about 2 years now. By staying consistent I have lost 50 lbs. This gives me a great routine for workouts and I like the challenges that are separate from the workouts. I get to choose different excuses if one seems to difficult. I have my son using this app for the last 3 months and I notice a difference. I definitely enjoy this app
  4. [R45] 5/5 · US Great app with real results: I’ve tried a few different workout apps but this one is by far the best I’ve come across! It has the best customization for daily workouts and challenges. It’s easy to get started with real results in the first month. I can do actual pushups now! My arms and chest are more toned and I’m building more lean muscle mass from head to toe. I will be sticking with this app f
  5. [R5] 5/5 · US Great workout Options: I really like the workouts, you can customize length and difficulty. Better than others I have tried.
  6. [R7] 4/5 · US Best App So Far: I like the functionality of the App and have the ability to customize routines. I am improving daily in strength. I don't believe I will meet my goals in the time frame allotted. Two items: Allow the user to adjust placements in between exercises. $34.95 / month is excessive and will be problematic once I reach my goals. For your consumption, not the general puplic’s.
  7. [R16] 5/5 · US Customizable: Adjust the app to my needs
  8. [R29] 5/5 · US Love this App!: Love the ease and customization of this app. I have a home gym, but have struggled to create my own workouts. This has been a godsend.
  9. [R2] 5/5 · US Regimented: I like the animated work out buddy that helps encourage me through each exercise. I also like how it reminds me to do my exercises and keeps me regimented in my daily life. 👍💊
  10. [R35] 5/5 · US Routine started!: Needed something to get me moving and committed again. This is a great way to reach daily goals
  11. [R68] 5/5 · CA Effortless Motivation: I truly find Muscle Booster an extremely user friendly application that inspires me to use the app on a regular basis. The instruction and clear graphics are the best I’ve seen. This helps work through the exercise program in a rather short period of time. Well done.
  12. [R49] 5/5 · US Seated T’ai Chi: Very easy to use, well explained workouts. I’m starting to use the food tracker function.
  13. [R76] 4/5 · CA 1st try: Easy peasy but still challenging enough. Exercise with narration and videos to guide you through each step.
  14. [R11] 5/5 · US Muscle Booster a Class Act!: I signed up for a strength program with MB and later felt I didn’t want to continue with it. It wasn’t for me. I was late contacting MB to ask to get my money back. I was beyond the auto renewal date. However, the MB people responded to my request with no hassle! I was very pleased and very impressed! The people I talked to did not hesitate to meet my request! The
  15. [R24] 5/5 · US Tech problem: They experts did a great job finding the source of the problem when my app continuously kept failing to download. However Charlie found the issue and I’m back working out with Muscle Booster! Thanks Charlie!
  16. [R30] 5/5 · US Great 👍🏼: Great program! Highly recommend it ! Great Responsive staff⭐️⭐️🙌 James Tierney
  17. [R55] 5/5 · CA Support: Had an issue with my subscription. They emailed me right back and fixed it great communication
  18. [R9] 5/5 · US Over charge attempt: $38.95 was charged to my card for monthly custom workout plus two more charges ($79.90 + $79.90) were attempted on my card same day. My card provider detected fraud, declined payment and closed my card. Due to security policy, I had to reorder a new card. Why would I be charged for additional services that I did not request or approve? I like the workout App, but I’m extremel
  19. [R17] 1/5 · US I canceled my subscription last month or the month before when you sent me a bill. It was paid.: I canceled my subscription last month. I don’t want to see or receive any notifications from you. I done with you and your program. Thanks
  20. [R19] 1/5 · US Muscle Booster Scam: Would give zero stars but had to click on something to submit. Do not use this app!!! Customer service is horrible and only run by bots. They will overcharge, they will auto renew without your approval. Buyer be aware!!!!
  21. [R28] 1/5 · US Don’t subscribe they will charge you after you cancel: I canceled my subscription prior to the renewal date and they still stole $99 from my account. Purchaser Beware, it’s in their online reviews as well. I just wish I read them first.
  22. [R20] 3/5 · US Program is OK: The program is OK only. I’ve noticed there’s allot of glitches in the app. Several times on the Tai Chi section , I had an error and couldn’t run the video. And this morning doing the regular exercises, it didn’t sync with my Apple Watch which it normally did. At times there was no sound. If these glitches keep happening, it’s not worth the subscription. I’m have the latest updates
  23. [R33] 1/5 · US Promising but failed: App crashed and could not download the tai chi program. The support was unable to fix the issue.
  24. [R92] 1/5 · CA A lot of bugs: J’ai eu vraiment beaucoup de problèmes de bogues avec ce programme sur mon i-phone 14 et le support pour résoudre la situation est nul . Il envoient des e-mail en disant quoi faire pour les résoudre à mais ça ne change rien et en suite il ne font plus rien. Alors j’ai annulé mon abonnement et je vais aller vers un meilleur programme de mise en forme.
  25. [R133] 1/5 · CA Not working: It just doesn't work. It tells me I have to update this app. But I can't do it because there is no update in the app store.
  26. [R25] 1/5 · US Could have but didn’t: I don’t mind paying the $50/yr but I do feel like it’s great to have a week for free to make sure that the app is what I am looking for. I didn’t complete the purchase but I really wish I could have seen how it is. I will continue to look for another app.
  27. [R44] 1/5 · US Not a free app: You don't find out until you've answered 10 million questions that it's not a free app. Cheapest plan is $20 for one month
  28. [R51] 2/5 · CA Not free: Takes 20 minutes OK that’s an exaggeration more time than necessary to set this up and then tells you it cost money after wasting all of your time
  29. [R117] 2/5 · CA Tons of Qs only to require to pay at the end - No trial: This is no different than those shady websites on the web which make you answer a ton of questions only to make you pay to see the plan. We need to be able to at least try the app’s capabilities before shelling out $$$. Why not ask these questions to build a plan but provide a trial with one week of the plan then ask to subscribe to view the
  30. [R1] 2/5 · US Not Right for Me: My shoulder will not allow me to do push-ups.
  31. [R43] 1/5 · US Sucks: I am 73 I have a very difficult time squatting and with arthritis my wrists can not support me for push-ups. This is total BS for the older generation
  32. [R66] 4/5 · CA Test: I was pushed to my limit doing that many push-ups in a minute. Also found the squats difficult because I have one ankle confused and it does not bend.
  33. [R105] 3/5 · CA Plus ou moins satisfait: Les exercices se ressemblent. On a peu d’alternatives . Trop de pompes et d’exercices semblables. Ne tiennent pas compte de nos besoin par rapport à nos limitations de santé, dos et épaules dans mon cas. On a la possibilité de choisir des exercices mais le choix offert est limité.
  34. [R12] 2/5 · US Appreciate the apology but there was no confusion.: The women’s version of the app is just more limited and worse for no reason.
  35. [R21] 2/5 · US Strange choice?: Great functionality. However I went weeks wondering why the app wouldn’t generate, nor allow me to manually choose, bicep or hamstring target groups. When I switched my profiles gender suddenly these appeared AND the animation was vastly better, actually demonstrating individual muscle groups with the form.
  36. [R93] 1/5 · CA Not Tailored to Women: Not a very good app that is made for women, I only have option of home workouts but if I want gym/machine workouts I have to switch to the male version
  37. [R149] 1/5 · CA Women Beware: This app is not developed for women to workout in the gym. You don’t get any options to pick using weights. Very disappointed.
  38. [R107] 1/5 · CA Zero customer service: Beware of this company! They thrive on auto-renewals and make it nearly impossible to get a refund. If you have an issue, they’ll require ridiculous steps like screenshots and timestamps, only to tell you it doesn’t fit their policies. There is zero customer service, and they will not help or refund you, no matter the situation. Save yourself the frustration and avoid them!
  39. [R143] 1/5 · CA The worst customer service: I paid the whole years, after the first week with the app closing in the middle of my routines restarting everything I got tired Tried to contact them and get a refund but they never answer… worst app ever
  40. [R22] 1/5 · US Expensive, poor refund policy, no renewal warning, and disappointing renewal option: Expensive, no warning of upcoming renewal, and at cancellations, offer for reduced renewal isn’t retroactive but for follow-on period.
  41. [R85] 1/5 · CA need reinstall each use: stay in animate logo have to reinstall each use and get code by email
  42. [R8] 1/5 · US Different than presented: Ad showed single page of instructions and a print button. Had to download an app that required I agree to hundreds of definitions / policies and even arbitration agreement for disputes before I can look over the product I had paid for.
  43. [R37] 1/5 · US Sign Up: If signing up and paying is any indication of the app I’m worried!
  44. [R38] 1/5 · US Scam its not free: Scam
  45. [R48] 1/5 · US Disappointed: Very difficult to log on n and communicate. Also difficult to cancel subscription due to process of log in and communication. Leads to overpayment. Never used the benefits because I couldn’t log in!
  46. [R125] 1/5 · CA Do not download: Do not download this app under any circumstances! Worst application of all time! The auto-renewal feature is sneaky, and unlike with Apple, it’s impossible to get a refund. Worst purchase of my life, please find something else! On top of that, the automated customer service is an unmitigated disaster, pathetic on every level
  47. [R82] 3/5 · CA Good app: I have been using this for a year, maybe even two years. I do really like the app. It’s been really helpful. I just recently cancelled my subscription because I can’t have it on my Apple Watch. As a beginner I want to see the workouts without having to carry my phone. This would be a great addition. Is this something that is coming soon or should I move on?
  48. [R195] 3/5 · CA Apple Watch doesn’t work with it: Previously apple watch worked with the app. After a recent update, the Apple Watch doesn’t work with it.

Synthesized from 120 recent App Store reviews · updated July 2026 · View on the App Store