# ABC Ergonomics vs SitTall

The clearest difference is update cadence: SitTall at every 3 weeks against ABC Ergonomics's every 5 months. ABC Ergonomics's advantage is iOS requirement (12.4 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ABC Ergonomics ships an update every 5 months, SitTall every 3 weeks. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | ABC Ergonomics | SitTall |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sittall-posture-correction/id6758161806/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 39 MB | 2 MB |
| Requires iOS | **12.4** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ABC Ergonomics](https://appshunter.io/developer/1517810905) | [Kisoo Kim](https://appshunter.io/developer/1871256161) |

## What reviewers say

### ABC Ergonomics

[App page](https://appshunter.io/ios/app/abc-ergonomics/id1517810906)

**In-app purchases:** none


### SitTall

[App page](https://appshunter.io/ios/app/sittall-posture-correction/id6758161806)

This app uses your device's camera and AI to detect and correct poor posture in real-time. It offers customizable alerts and privacy-focused operation, helping you build healthier habits and reduce discomfort from prolonged sitting.

**Highlights:** Real-time posture detection with AI, Customizable sensitivity and alert types, Adjustable alert delay and interval, Front camera support, 100% private, no data leaves device, Posture calibration

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

**In-app purchases:** none


## Frequently asked questions

### Is ABC Ergonomics free?

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

### Is SitTall free?

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

### Do ABC Ergonomics or SitTall have ads?

Neither ABC Ergonomics nor SitTall shows ads.

### Which is updated more often, ABC Ergonomics or SitTall?

ABC Ergonomics ships an update every 5 months, and SitTall every 3 weeks. Most recently, ABC Ergonomics was updated on October 6, 2026 and SitTall on October 8, 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.*