# Flex AI Workout Trainer & Log vs Coachify AI

The clearest difference is update cadence: Coachify AI at every 3 days against Flex AI Workout Trainer & Log's every 9 days. Coachify AI also leads on iOS requirement (16.4 vs 18.0). Flex AI Workout Trainer & Log's advantage is review sentiment (69% vs 60%). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Flex AI Workout Trainer & Log sells 8 in-app purchases, starting at $12.99 per month and Coachify AI sells 11 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.6 for Flex AI Workout Trainer & Log against 4.6 for Coachify AI. Both are backed by a comparable volume of ratings — 2.4K and 2K respectively. Written reviews are what separate them: 69% of Flex AI Workout Trainer & Log's written reviews are positive against 60% of Coachify AI's.

Flex AI Workout Trainer & Log ships an update every 9 days, Coachify AI every 3 days. Both last shipped on October 20, 2026.

## The numbers

| Metric | Flex AI Workout Trainer & Log | Coachify AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (2.4K ratings)](https://appshunter.io/ios/app/flex-ai-workout-trainer-and-log/id1446354547/reviews) | [4.6 (2K ratings)](https://appshunter.io/ios/app/coachify-ai-workout-planner/id6449539939/reviews) |
| Number of ratings | **2.4K** | 2K |
| Positive reviews | **69.0% of reviews** | 59.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 3 days** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 574 MB | 105 MB |
| Requires iOS | 18.0 | **16.4** |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 17+ | +4 |
| Developer | [Flex Artificial Intelligence Inc.](https://appshunter.io/developer/1446354546) | [Coachify.AI](https://appshunter.io/developer/1689576607) |

## What reviewers say

### Flex AI Workout Trainer & Log

[App page](https://appshunter.io/ios/app/flex-ai-workout-trainer-and-log/id1446354547)

This app uses AI to provide personalized workout plans and real-time form feedback for weightlifters. It tracks progress, offers adaptive progression, and includes motivational features like leaderboards and streaks. It's designed for all experience levels, from beginners to pros.

**Highlights:** AI personal trainer, Real-time form feedback, Personalized workout plans, Adaptive progression, Strength tracking, Community leaderboards, Apple Watch integration

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription Monthly | $12.99 | per month |
| Premium Plus Monthly | $29.99 | per month |
| Premium Plus Family Monthly | $69.99 | per month |
| Premium Yearly Subscription | $79.99 | per year |
| Premium Plus Yearly | $191.99 | per year |
| Premium Plus Family Yearly | $499.99 | per year |
| 1 Month Free Premium | Free | one-time |
| Lifetime Free Premium | Free | one-time |

**What reviewers like**

- 🚀 Detailed workout tracking
- 👍 Customizable workouts
- 🔒 Comprehensive exercise library
- 💡 Helpful progress tracking
- 👍 Clean and intuitive interface

**What reviewers complain about**

- 🐛 Glitches and bugs
- 💰 Expensive premium subscription
- 🔒 Limited functionality without premium
- 🐛 Inconsistent rest timer
- 🐛 Workout data loss

**Reported bugs**

- App crashes on iOS 16 update
- Inability to log workouts on previous days
- Inconsistent syncing between app and Apple Watch

**Requested features**

- Offline workout mode
- Ability to save and reuse custom workout plans
- Muscle group targeting and analytics
- Social features and community integration


### Coachify AI

[App page](https://appshunter.io/ios/app/coachify-ai-workout-planner/id6449539939)

This AI-powered fitness app creates personalized workout plans for both gym and home. It includes a diet and calorie tracker to help you meet your macro goals and monitors your progress with detailed strength reports. Achieve your fitness journey with tailored guidance.

**Highlights:** AI-powered personalized workout plans, Gym and home workout options, Calorie and macro tracking, Workout planner with rest days, Gym workout tracker with weight logging, Detailed strength reports, Progress monitoring

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coachify AI Premium | $7.99 | per month |
| Coachify.AI Access to Coaches | $14.99 | per month |
| Coachify AI Premium | $17.99 | per 3 months |
| Coachify.AI Premium | $29.99 | per 3 months |
| Coachify.AI 6 Months Access | $34.99 | per 6 months |
| Coachify.AI Premium 1 Year | $59.99 | per year |
| Coachify AI Premium | $59.99 | per year |
| Coachify.AI 1 Year Premium | $79.99 | per year |
| 200 SweatCoins | $9.99 | one-time |
| 500 SweatCoins | $24.99 | one-time |
| 1000 SweatCoins | $44.99 | one-time |

**What reviewers like**

- 👍 Helpful personal training
- 🚀 Easy to use
- 💪 Effective workouts
- 📊 Detailed tracking and progress
- 🍽️ Useful nutrition guidance

**What reviewers complain about**

- 🐛 Buggy and glitchy
- 🔒 Difficult to cancel subscription
- 💰 Expensive
- 🤖 AI guidance not always accurate
- 📱 Compatibility issues with certain devices

**Reported bugs**

- Workouts not saving properly
- Login and password reset problems
- Frequent app crashes and freezes
- Nutrition tracking inaccuracies

**Requested features**

- More exercise variations and customization
- Seamless integration with other fitness apps
- Ability to manually edit workout logs
- Improved customer support and communication


## Frequently asked questions

### Is Flex AI Workout Trainer & Log free?

Flex AI Workout Trainer & Log is free to download, with in-app purchases available.

### Is Coachify AI free?

Coachify AI is free to download, with in-app purchases available.

### Which has better reviews, Flex AI Workout Trainer & Log or Coachify AI?

Flex AI Workout Trainer & Log and Coachify AI are both rated 4.6 out of 5 on the App Store, from 2.4K and 2K ratings respectively.

### Do Flex AI Workout Trainer & Log or Coachify AI have ads?

Neither Flex AI Workout Trainer & Log nor Coachify AI shows ads.

### Which is updated more often, Flex AI Workout Trainer & Log or Coachify AI?

Flex AI Workout Trainer & Log ships an update every 9 days, and Coachify AI every 3 days. Most recently, Flex AI Workout Trainer & Log was updated on October 20, 2026 and Coachify AI on October 20, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*