# Flex AI Workout Trainer & Log — user reviews > 303 indexed App Store user reviews of Flex AI Workout Trainer & Log by Flex Artificial Intelligence Inc., rated 4.60/5 from 2,405 ratings. - Source: https://appshunter.io/ios/app/flex-ai-workout-trainer-and-log/id1446354547/reviews - App overview in markdown: https://appshunter.io/ios/app/flex-ai-workout-trainer-and-log/id1446354547.md - Rating breakdown: 5★ 1,952 · 4★ 261 · 3★ 63 · 2★ 40 · 1★ 89 ## What do users think of Flex AI Workout Trainer & Log? Overall sentiment: positive **Pros** - 🚀 Detailed workout tracking - 👍 Customizable workouts - 🔒 Comprehensive exercise library - 💡 Helpful progress tracking - 👍 Clean and intuitive interface - 🚀 Seamless Apple Watch integration **Cons** - 🐛 Glitches and bugs - 💰 Expensive premium subscription - 🔒 Limited functionality without premium - 🐛 Inconsistent rest timer - 🐛 Workout data loss **Commonly reported bugs** - App crashes on iOS 16 update - Inability to log workouts on previous days - Inconsistent syncing between app and Apple Watch **Most requested features** - Offline workout mode - Ability to save and reuse custom workout plans - Muscle group targeting and analytics - Social features and community integration ## Newest reviews (13 of 303) ### 3/5 — Best fitness app! Very glitchy lately *2026-06-18, version 3.1* I’ve been using this app for 3 years and it’s been amazing so far. But recently, it’s been very glitchy and there’s no way to contact app support. I’ve tried to do it through the app after uninstalling and reinstalling it and it’s still not working. I’ve tried doing it through their site but it also doesn’t work ### 2/5 — Annoying AI *2026-06-17, version 3.1* Something is happening where my routines are duplicating exercises and it's time consuming and annoying to keep correcting and reorganizing my workouts. Won't be using anymore. ### 1/5 — New login screen gets stuck *2026-06-07, version 3.1* While logging in as a new user, the screen just freezes on ‘Progressive overload is the key…’. I have been struggling to register as a new user despite multiple attempts ### 1/5 — Can’t use the app *2026-06-04, version 3.1* forces you to go through a survey that you can’t skip, then a tutorial. I get halfway through it just for it to softlock on the screen telling me “progress overload is the key” every single time, I can’t even use the app. you should be able to skip that whole process and leave it up to the user to set it up later if that’s what they choose ### 1/5 — Stuck on page, can’t progress *2026-05-12, version 3.1* I can’t get pass the Progression Overload page after the exercise demo ### 1/5 — Report an issue *2026-04-23, version 3.1* I paid for the app and it doesn’t show up on my watch. Also the button report an issue on the app doesn’t work so i have to write a review here. I tried to delete and download the app again not working. ### 2/5 — Deleted all the workouts I had *2026-04-18, version 3.1* It’s a good app and I genuinely liked it even just using the free version but suddenly it deleted my whole account and my workouts and made me create a new one. ### 2/5 — Terrible Updates *2026-04-15, version 3.1* I want to be able to rate this app higher because I really love[d] a lot of the features and functionality; however I’m considering finding a new app to use before my premium subscription renews in a week. I have constant problems with this app due to updates that I assume are meant to fix bugs. There are many occasions when my phone and watch app do not sync, leading to inaccurate tracking, and one week ago my watch app disappeared completely. This is one of the features that I appreciate the most, and one of the reasons why I kept my premium subscription. I sought support in the app and never heard back, and now I don’t even have the option to request support (tapping the support tab in the app does nothing, shaking the phone to bring up the support message box does nothing). Last year, I was considering switching to a new app, but I decided to stick it out. Now, I do not think it’s worth it. ### 1/5 — Watch App doesn’t work well *2026-04-13* It just randomly uninstalled the app from my watch. What’s up? **Developer response:** Hi Rajath, if you report the problem to our development team by screenshotting in app to open the prompt, we can fix this issue for you. Also you are able to add existing workouts to your workout plan, we can help show you how to do that once you open a chat with us. Thank you! ### 1/5 — Can never pass the onboarding flow *2026-04-12, version 3.1* Pls fix ### 2/5 — This may be the dumbest “smart” app *2026-03-27, version 3.0.12* I’m going to try to downgrade from paid to free to see if that stops the AI from screwing up all my workouts. Today the AI incremented my lat pulldown to 225lbs (the machines Increment in 10) and told me to try a 67.5lb dumbbell (does not exist). ### 4/5 — Great but bouncy *2026-03-25, version 3.0.12* Love the functionality- but every time I enter a count during the work out the screen bounces around dramatically and I have to wait for every number I put in. It’s extremely annoying. So many times it’s jumped and I end up entering in a number In the wrong category. ### 1/5 — Went downhill quickly *2026-02-28, version 3.0.8* Firstly, I used to love this app. Until they switched the format of the visual of the workout. Before you would get a picture or video of your workout that took the majority of the screen and then at the bottom get a pause or complete button. Well it’s gone now. Now all I get is a list. In order to visually see the workout I have to tap on it. Took me out of my zone so bad I quick my workout early. Also FYI the calorie count is off. The calorie it claims you burn are 100% inaccurate. ## Most critical reviews (10 lowest-rated) ### 1/5 — Signing up *2026-08-17, version 3.1* This seems like a really good app but when I try to sign up for free I get stuck on the Progression overload is key to improve screen. If someone can help me that would mean a lot ### 1/5 — Rubbish *2026-08-10, version 3.1* I downloaded the app a few days ago and each time it freezes upon trying to set it up. Can’t be bothered anymore ### 1/5 — Love the app but they deleted my account and there is no tech support *2026-08-07, version 3.1* I’ve been using the app for years and enjoyed it. However I have been locked out of my account for weeks and trying to get in touch with their support department for and they have not responded. Very disappointing. Due to the lack of tech support, I do not recommend this app ### 1/5 — Doesn’t work *2026-08-02, version 3.1* I’ve been trying to use this app for the past two weeks. It doesn’t allow me to go beyond the tutorial. ### 1/5 — Doesn’t Work *2026-07-29, version 3.1* Can’t even use the app. Freezes on the orientation process. ### 1/5 — No response *2026-06-29, version 3.1* Not working or responding to support requests ### 1/5 — Buggy *2026-06-29, version 3.1* I had a number of issues so contacted support and - they ignored me. Totally unsupported app so don’t waste your money. ### 1/5 — Can’t Even Sign Up *2026-06-14, version 3.1* A friend recommended it for me to try but I can’t get past the “auto progression” page when I’m trying to sign up. I’ve tried to do this all day and now accepted that I’ll just have to delete coz I can’t use it at all ### 1/5 — No Response from Support *2026-06-10, version 3.1* I’m going to advise you not to buy this app. Not because it doesn’t work. It’s a great app if it works. Mine worked fine for one week. Then I started getting messages. We’re experiencing problems. Try again. Unable to resolve your request. Please restart. And there’s no way to contact Support. They do send you a nice email when you become a member. So I’ve written them five times. I still haven’t had a response. So maybe everyone decided to go on vacation or something. Maybe They were all abducted by the AI. But here’s the thing. I paid for this a year and even if I cancel, I’m stuck with the subscription. So I’m posting this year, hoping that somebody sees this negative review at their company and decides to reach. ### 1/5 — Can’t get past the “tutorial” *2026-06-07, version 3.1* App takes through tutorial but gets stuck on the auto-progression section, and won’t let me use the app. Please resolve so I can try the app ## Most praised reviews (10 highest-rated) ### 5/5 — I love it *2026-08-07, version 3.1* This app helps me stay on track and increase weight and helps me stay organized! ### 5/5 — Consistency is key. *2026-08-04, version 3.1* Just recently getting back into my health journey and Flex AI has really helped me stay motivated and consistent. ### 5/5 — Solid app *2026-08-01, version 3.1* I’ve been using Flex for over a year and honestly has been one of the main reasons why I’ve made so much progress so quickly. Being able to track how often you lift, how much, and how long has really helped me a lot. App is especially good if you struggle with consistency, and I’ve seen other fitness trackers come out recently, but this one got it down for sure. Beats tracking lifts in the notes app 110%. ### 5/5 — Good *2026-07-14, version 3.1* Sometimes clunky, but way to keep track ### 5/5 — Good but needs work *2026-06-27, version 3.1* It’s a great app, trust me, although, it does need a lot of money to fully use the app, it is $10 a month for max, which isn’t that bad, but is still a little costly. I recommend that you use this, only if you are actually struggling to build a workout or if you need to lose weight. Thanks ### 5/5 — Love it *2026-05-20, version 3.1* I love Flex AI workout trainer, and. log because it helps keep my weight and it helps me keep focus and with this my dogs will always know what I’m doing. ### 5/5 — I truly love this app thanks *2026-04-15, version 3.1* I love this app honestly it keeps me going I love how it’s a community where you can view other people workout patterns or build your and post pictures and like each other progress and the step count is fun cause it challenges you To walk more and compete with people you follow it does need more workout on list but I love that it allows you to create your own workouts and add this app has been fantastic ### 5/5 — Game Changer *2026-01-18, version 3.0.3* This app has taken my daily workouts to the next level. The AI coach is my favourite part, he treats me terribly but it’s nice motivation for sure. I love how it does progressive overloads by itself. Highly recommend ### 5/5 — Change of watch logging *2026-01-08, version 3.0.3* After the first set of exercise is a really poor time to find out you have to upgrade to premium to log your workout with your watch. Canceling subscription. ### 5/5 — AM *2026-01-03, version 3.0.2* Keeps me focused and work with my daily schedule and I feel every bit of my body --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-22.*