# BattleFit vs Flex AI Workout Trainer & Log

The clearest difference is rating: Flex AI Workout Trainer & Log at 4.6 against BattleFit's 1.5. Flex AI Workout Trainer & Log also leads on ads (none vs shown) and ratings volume (2.4K vs 2). BattleFit's advantage is review sentiment (82% vs 69%) and iOS requirement (15.0 vs 18.0). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. BattleFit sells 10 in-app purchases, starting at $2.99 per month and Flex AI Workout Trainer & Log sells 8 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Flex AI Workout Trainer & Log holds the better App Store score, 4.6 against 1.5. 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 complicate that: 82% of BattleFit's written reviews are positive against 69% of Flex AI Workout Trainer & Log's, so the app with the better star average is not the one people write more warmly about.

BattleFit ships an update monthly, Flex AI Workout Trainer & Log every 9 days. The most recent releases landed on September 9, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | BattleFit | Flex AI Workout Trainer & Log |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.5 (2 ratings)](https://appshunter.io/ios/app/battlefit/id687202056/reviews) | **[4.6 (2.4K ratings)](https://appshunter.io/ios/app/flex-ai-workout-trainer-and-log/id1446354547/reviews)** |
| Number of ratings | 2 | **2.4K** |
| Positive reviews | **81.8% of reviews** | 69.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 81 MB | 574 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 17+ |
| Developer | [DU3 Pty Ltd](https://appshunter.io/developer/595873926) | [Flex Artificial Intelligence Inc.](https://appshunter.io/developer/1446354546) |

## What reviewers say

### BattleFit

[App page](https://appshunter.io/ios/app/battlefit/id687202056)

Challenge friends and family to fun, quick workouts to achieve fitness goals. Compete with others globally or train solo to improve personal bests and climb leaderboards. Offers a wide variety of pre-loaded and customizable workouts for all fitness levels.

**Highlights:** Challenge friends and family, Battle yourself for personal bests, Track progress and view results, Create custom workouts, Climb leaderboards, Level-up by winning battles

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MVP Monthly Access | $2.99 | per month |
| MVP Annual Pass | $39.99 | per year |
| Recharge 50 FitCreds | $2.99 | one-time |
| Unlock Battles+ | $2.99 | one-time |
| Unlock Workouts+ | $2.99 | one-time |
| BattleFit Upgrade | $4.99 | one-time |
| Recharge 100 FitCreds | $4.99 | one-time |
| Unlock Programs+ | $4.99 | one-time |
| Recharge 250 FitCreds | $9.99 | one-time |
| Unlock BattleFit+ | $9.99 | one-time |


### 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 | $1.99 | per month |
| Premium Plus Monthly | $2.99 | per month |
| Premium Yearly Subscription | $9.99 | per year |
| Premium Plus Family Monthly | $9.99 | per month |
| Premium Plus Yearly | $19.99 | per year |
| Premium Plus Family Yearly | $49.99 | 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


## Frequently asked questions

### Is BattleFit free?

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

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

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

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

Flex AI Workout Trainer & Log is rated higher. BattleFit averages 1.5 out of 5 from 2 ratings, while Flex AI Workout Trainer & Log averages 4.6 from 2.4K ratings.

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

BattleFit shows ads; Flex AI Workout Trainer & Log does not.

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

BattleFit ships an update monthly, and Flex AI Workout Trainer & Log every 9 days. Most recently, BattleFit was updated on September 9, 2026 and Flex AI Workout Trainer & Log on September 23, 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.*