Flex AI Workout Trainer & Log

Name: Flex AI Workout Trainer & Log
Rating: 4.6 (2389 reviews)
Author: Flex Artificial Intelligence Inc.

By: Flex Artificial Intelligence Inc.

Fitness Tracker & Gym Planner

Features & Capabilities

Flex AI is the world’s first true AI personal trainer — built for lifters who want to train smarter, progress faster, and perfect their form. With real-time AI coaching, it guides every rep, automatically adapts your program, and keeps you motivated through challenges, leaderboards, and streaks.

Key features include a personalized AI coach that builds workouts around your goals, patented real-time form feedback powered by computer vision, adaptive progression based on sports science, and comprehensive progress tracking. You’ll see strength curves, PRs, volume, and recovery graphs, with Apple Watch compatibility and a global community to compete on leaderboards, earn badges, and stay accountable. The core features are free to start, with upgrades for advanced coaching and premium analytics.

User Growth & Download Statistics

App AI Sports Analytics Education

By:

Flex Artificial Intelligence Inc.

Rating:

4.60

(2,389) 1 ratings

Version:

3.1 Last updated: 2026-04-09

Version code:

883551821

Creation date:

2021-12-14

Compatible devices:

Size:

573.52MB

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-04

Compare stats and ranking:

Ranking

# 38,887 ▼ 85

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Flex Artificial Intelligence Inc.

Apple Apps Store

https://apps.apple.com/us/app/flex-ai-workout-trainer-log/id1446354547

Website:

https://flexfitnessapp.com/

User Reviews

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

Recent reviews

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.

by ) *****, 2026-05-20

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.

by Hi*****, 2026-04-18

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.