# Muscles vs Flexlings

The clearest difference is device support: Flexlings at 3 against Muscles's 1. Flexlings also leads on iOS requirement (15.1 vs 17.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Muscles sells 1 one-off in-app purchase and Flexlings sells 2 in-app purchases, starting at $4.99 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 — 5.0 for Muscles against 5.0 for Flexlings. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Muscles | Flexlings |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/muscles-workout-tracker/id6476836905/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/flexlings/id6761585752/reviews) |
| Number of ratings | **3** | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 2 MB | 64 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Nathan Armstrong](https://appshunter.io/developer/982863187) | [Latent Space Labs](https://appshunter.io/developer/1890353346) |

## What reviewers say

### Muscles

[App page](https://appshunter.io/ios/app/muscles-workout-tracker/id6476836905)

This app offers a streamlined and intuitive way to log your exercise sessions. Easily track your progress with visual analytics and motivational graphs. Its beautiful interface makes fitness tracking enjoyable for all levels.

**Highlights:** Effortless workout logging, Customizable exercise tracking, Progress visualization with graphs, Insightful analytics and statistics, Beautiful and minimalist interface, Dashboard widgets for quick insights

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $4.99 | one-time |


### Flexlings

[App page](https://appshunter.io/ios/app/flexlings/id6761585752)

Transform your real-world workouts into an epic RPG adventure. Earn XP for every step, lift, and calorie burned to power up your creature and battle friends. Features AI nutrition tracking and real-time progress updates to keep you motivated.

**Highlights:** Sync with Apple HealthKit, Train and evolve unique creatures, Battle friends with real fitness stats, AI food photo scanning, XP, levels, and achievements, Real-time leaderboards, Push notifications

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flexling Pro | $4.99 | per month |
| Flexling Pro | $39.99 | per year |


## Frequently asked questions

### Is Muscles free?

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

### Is Flexlings free?

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

### Which has better reviews, Muscles or Flexlings?

Muscles and Flexlings are both rated 5.0 out of 5 on the App Store, from 3 and 2 ratings respectively.

### Do Muscles or Flexlings have ads?

Neither Muscles nor Flexlings shows ads.

### Which is updated more often, Muscles or Flexlings?

Muscles ships an update fortnightly, and Flexlings fortnightly. Most recently, Muscles was updated on October 24, 2026 and Flexlings on October 19, 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.*