# Flex AI Workout Trainer & Log

> Fitness Tracker & Gym Planner

Canonical page: [https://chrome-stats.com/d/id1446354547](https://chrome-stats.com/d/id1446354547)

## Overview

- **ID:** `id1446354547`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Flex Artificial Intelligence Inc.
- **Category:** Health & Fitness
- **Rating:** 4.60 / 5 (2,408 ratings)
- **Version:** 3.1
- **Last updated:** 2026-04-09
- **First published:** 2021-12-14
- **Size:** 574 MB
- **Data as of:** 2026-09-20
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/flex-ai-workout-trainer-log/id1446354547)
- **Website:** [https://flexfitnessapp.com/](https://flexfitnessapp.com/)
- **Privacy policy:** [https://flexfitnessapp.com/privacy-policy/](https://flexfitnessapp.com/privacy-policy/)

## Description

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.

## Rankings

- #37,362 — Overall
- #45 — logo

## 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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Source: [Chrome-Stats](https://chrome-stats.com/d/id1446354547)