# Flex AI Workout Trainer & Log vs FORM

The clearest difference is in-app purchases: FORM at none against Flex AI Workout Trainer & Log's 6. FORM also leads on review sentiment (100% vs 69%) and rating (5.0 vs 4.6). Flex AI Workout Trainer & Log's advantage is ratings volume (2.4K vs 6). On price, update cadence, ads and device support 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. FORM asks for nothing beyond the download.

FORM 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 6, 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 FORM's.

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

## The numbers

| Metric | Flex AI Workout Trainer & Log | FORM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (2.4K ratings)](https://appshunter.io/ios/app/flex-ai-workout-trainer-and-log/id1446354547/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/form-ai-movement-library/id6449363072/reviews)** |
| Number of ratings | **2.4K** | 6 |
| Positive reviews | 69.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 2 weeks |
| Monetization | Freemium | **Free** |
| Size | 574 MB | 135 MB |
| Requires iOS | 18.0 | **14.0** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Flex Artificial Intelligence Inc.](https://appshunter.io/developer/1446354546) | [Lulworth Stone Limited](https://appshunter.io/developer/1688719574) |

## 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


### FORM

[App page](https://appshunter.io/ios/app/form-ai-movement-library/id6449363072)

Explore over 1300 3D-animated exercises for strength and conditioning. Understand movement patterns, discover exercises for specific needs, and learn safe execution techniques to enhance your fitness knowledge.

**Highlights:** 1300+ 3D interactive exercises, Augmented Reality (AR) mode, Expert-developed movement hierarchy, Search by outcome or problem, Clear execution cues, Bodyweight and equipment exercises

**Features:** macOS Compatibility

**In-app purchases:** none


## 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 FORM free?

FORM is free to download, with no in-app purchases.

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

FORM is rated higher. Flex AI Workout Trainer & Log averages 4.6 out of 5 from 2.4K ratings, while FORM averages 5.0 from 6 ratings.

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

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

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

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