# rectify vs WatchMyBack

The clearest difference is in-app purchases: WatchMyBack at none against rectify's 1. WatchMyBack also leads on ads (none vs shown). rectify's advantage is update cadence (every 5 days vs every 2 weeks) and device support (4 vs 2). On price and iOS requirement there is nothing between them.

Both are free to download. rectify sells 1 in-app purchase, starting at $4.99 per month. WatchMyBack asks for nothing beyond the download.

rectify ships an update every 5 days, WatchMyBack every 2 weeks. The most recent releases landed on September 12, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | rectify | WatchMyBack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 2 weeks |
| Size | 189 MB | 10 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [MinkTec GmbH](https://appshunter.io/developer/1634767386) | [Ta Wei Tan](https://appshunter.io/developer/1841157699) |

## What reviewers say

### rectify

[App page](https://appshunter.io/ios/app/rectify-posture-tracking/id1634767384)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AirPods Head Tracking | $4.99 | per month |


### WatchMyBack

[App page](https://appshunter.io/ios/app/watchmyback-posture-tracker/id6754323963)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is rectify free?

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

### Is WatchMyBack free?

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

### Do rectify or WatchMyBack have ads?

rectify shows ads; WatchMyBack does not.

### Which is updated more often, rectify or WatchMyBack?

rectify ships an update every 5 days, and WatchMyBack every 2 weeks. Most recently, rectify was updated on September 12, 2026 and WatchMyBack on September 5, 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.*