# Fatigue & Rest Tracker vs Orrin

The clearest difference is update cadence: Orrin at every 2 months against Fatigue & Rest Tracker's every 5 months. Fatigue & Rest Tracker's advantage is iOS requirement (15.1 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Fatigue & Rest Tracker sells 2 in-app purchases, starting at $0.99 per month and Orrin sells 4 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Fatigue & Rest Tracker ships an update every 5 months, Orrin every 2 months. The most recent releases landed on November 8, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Fatigue & Rest Tracker | Orrin |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Size | 69 MB | 30 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Ryota Sasazawa](https://appshunter.io/developer/1823371625) | [Emre Dogrubakar](https://appshunter.io/developer/1812072374) |

## What reviewers say

### Fatigue & Rest Tracker

[App page](https://appshunter.io/ios/app/fatigue-and-rest-tracker-calmo/id6753157576)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (1Month) | $0.99 | per month |
| Premium (1Year) | $3.99 | per year |


### Orrin

[App page](https://appshunter.io/ios/app/orrin-brush-timer/id6769534965)

**Features:** Family Sharing, Apple Watch app

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Solo Monthly | $3.99 | per month |
| Family Monthly | $7.99 | per month |
| Solo Yearly | $29.99 | per year |
| Family Yearly | $59.99 | per year |


## Frequently asked questions

### Is Fatigue & Rest Tracker free?

Fatigue & Rest Tracker is free to download, with in-app purchases available.

### Is Orrin free?

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

### Do Fatigue & Rest Tracker or Orrin have ads?

Neither Fatigue & Rest Tracker nor Orrin shows ads.

### Which is updated more often, Fatigue & Rest Tracker or Orrin?

Fatigue & Rest Tracker ships an update every 5 months, and Orrin every 2 months. Most recently, Fatigue & Rest Tracker was updated on November 8, 2026 and Orrin on November 9, 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.*