# One FiT Nation vs Thin Within

The clearest difference is in-app purchases: One FiT Nation at none against Thin Within's 1. On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Thin Within sells 1 one-off in-app purchase. One FiT Nation asks for nothing beyond the download.

One FiT Nation ships an update every 3 months, Thin Within every 2 months. The most recent releases landed on October 3, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | One FiT Nation | Thin Within |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (19 ratings)](https://appshunter.io/ios/app/one-fit-nation/id1503695983/reviews)** | — |
| Number of ratings | **19** | — |
| In-app purchases | **No** | Yes |
| Ads | No | — |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 175 MB | 40 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Next Level Fitness Professionals LLC](https://appshunter.io/developer/1503695982) | [Heidi Bylsma](https://appshunter.io/developer/793039689) |

## What reviewers say

### One FiT Nation

[App page](https://appshunter.io/ios/app/one-fit-nation/id1503695983)

This comprehensive fitness platform helps you track daily activities, monitor body metrics, and access over 2000 exercises with 3D demonstrations. Create custom workouts or choose from presets to guide your fitness journey and earn badges.

**Highlights:** Class schedules and opening hours, Daily fitness activity tracking, Weight and body metrics tracking, 2000+ exercises with 3D demos, Preset and custom workouts, Progress tracking, Apple Health integration

**Features:** macOS Compatibility

**In-app purchases:** none


### Thin Within

[App page](https://appshunter.io/ios/app/thin-within/id1571112521)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Time Subscription | $4.99 | one-time |


## Frequently asked questions

### Is One FiT Nation free?

One FiT Nation is free to download, with no in-app purchases.

### Is Thin Within free?

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

### Which is updated more often, One FiT Nation or Thin Within?

One FiT Nation ships an update every 3 months, and Thin Within every 2 months. Most recently, One FiT Nation was updated on October 3, 2026 and Thin Within on October 4, 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.*