Reviews of Flex AI Workout Trainer & Log

By: Flex Artificial Intelligence Inc. App

List of user reviews and ratings for Flex AI Workout Trainer & Log

Total ratings

4.60 (Rating count: 2,406)

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Review summary

Flex AI Workout Trainer & Log is praised for strong tracking, AI-driven workouts, and Apple Watch integration, plus customization and community support. However, reviews repeatedly cite data loss and account restoration issues, billing and price increase concerns, device syncing problems, AI-related inaccuracies, and weak customer support—issues that heavily impact the overall experience despite the app's strengths.

Pros

Strong workout tracking with clear progress data and the ability to create/save custom workouts
AI-powered training features and form correction that adapt to user progress
Excellent Apple Watch integration for tracking and syncing
User-friendly interface with organized workouts and easy logging
Motivating community features to view others' routines and share progress

Cons

Data loss and account issues (deleted accounts; progress lost) with slow or unclear restoration
Billing and subscription problems, including unexpected charges, refunds denial, and price increases
Frequent device syncing problems between phone and watch, leading to inaccurate tracking or watch app disappearance
AI changes causing inaccuracies in suggested weights/workouts and perceived price hikes
Poor or unresponsive customer support

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User Reviews

Recent rating average: 2.70

All time rating average: 4.60

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21% (13)

Date	Author	Comment
2026-08-17	Ta*****	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
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
2026-08-07	Po*****	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
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
2026-08-07	br*****	This app helps me stay on track and increase weight and helps me stay organized!
This app helps me stay on track and increase weight and helps me stay organized!
2026-08-04	KS*****	Just recently getting back into my health journey and Flex AI has really helped me stay motivated and consistent.
Just recently getting back into my health journey and Flex AI has really helped me stay motivated and consistent.
2026-08-02	St*****	I’ve been trying to use this app for the past two weeks. It doesn’t allow me to go beyond the tutorial.
I’ve been trying to use this app for the past two weeks. It doesn’t allow me to go beyond the tutorial.
2026-08-01	ma*****	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%.
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%.
2026-07-29	da*****	Can’t even use the app. Freezes on the orientation process.
Can’t even use the app. Freezes on the orientation process.
2026-06-27	Ni*****	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
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
2026-06-17	I *****	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.
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.
2026-06-10	Ma*****	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.
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.