# Flex AI Workout Trainer & Log vs Gym Buddy Tracker

The clearest difference is review sentiment: Gym Buddy Tracker at 100% against Flex AI Workout Trainer & Log's 69%. Gym Buddy Tracker also leads on rating (5.0 vs 4.6) and iOS requirement (15.6 vs 18.0). Flex AI Workout Trainer & Log's advantage is ratings volume (2.4K vs 2) and update cadence (every 9 days vs every 3 weeks). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Flex AI Workout Trainer & Log sells 6 in-app purchases, starting at $12.99 per month and Gym Buddy Tracker sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Gym Buddy Tracker holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Flex AI Workout Trainer & Log has 2.4K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 69% of Flex AI Workout Trainer & Log's written reviews are positive against 100% of Gym Buddy Tracker's.

Flex AI Workout Trainer & Log ships an update every 9 days, Gym Buddy Tracker every 3 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Flex AI Workout Trainer & Log | Gym Buddy Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (2.4K ratings)](https://appshunter.io/ios/app/flex-ai-workout-trainer-and-log/id1446354547/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/gym-buddy-tracker/id1659216618/reviews)** |
| Number of ratings | **2.4K** | 2 |
| Positive reviews | 69.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Monetization | Freemium | Freemium |
| Size | 574 MB | 96 MB |
| Requires iOS | 18.0 | **15.6** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Flex Artificial Intelligence Inc.](https://appshunter.io/developer/1446354546) | [Mattia Biondani](https://appshunter.io/developer/1659216620) |

## 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 (6)**

| 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 |

**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


### Gym Buddy Tracker

[App page](https://appshunter.io/ios/app/gym-buddy-tracker/id1659216618)

This app helps you personalize your fitness journey by creating and tracking custom workouts. Monitor your progress, manage weights, and optimize rest periods. Explore a library of routines or build your own for any fitness level.

**Highlights:** Create custom workouts, Track workout progress, Manage weights and reps, Optimize rest periods, Library of workout routines, Build custom routines

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gym Buddy PRO Monthly | $0.99 | per month |
| Gym Buddy PRO Yearly | $9.99 | per year |


## 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 Gym Buddy Tracker free?

Gym Buddy Tracker is free to download, with in-app purchases available.

### Which has better reviews, Flex AI Workout Trainer & Log or Gym Buddy Tracker?

Gym Buddy Tracker is rated higher. Flex AI Workout Trainer & Log averages 4.6 out of 5 from 2.4K ratings, while Gym Buddy Tracker averages 5.0 from 2 ratings.

### Do Flex AI Workout Trainer & Log or Gym Buddy Tracker have ads?

Neither Flex AI Workout Trainer & Log nor Gym Buddy Tracker shows ads.

### Which is updated more often, Flex AI Workout Trainer & Log or Gym Buddy Tracker?

Flex AI Workout Trainer & Log ships an update every 9 days, and Gym Buddy Tracker every 3 weeks. Most recently, Flex AI Workout Trainer & Log was updated on November 2, 2026 and Gym Buddy Tracker on November 3, 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.*