# Katamuki Checker vs SittingPostureCHECKER

The clearest difference is price: SittingPostureCHECKER at Free against Katamuki Checker's $0.49. SittingPostureCHECKER also leads on update cadence (every 6 months vs every 18 months) and iOS requirement (15.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

SittingPostureCHECKER is free to download; Katamuki Checker costs $0.49 up front. Neither carries in-app purchases, so what you see is what you pay.

Katamuki Checker ships an update every 18 months, SittingPostureCHECKER every 6 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Katamuki Checker | SittingPostureCHECKER |
| --- | --- | --- |
| Price | $0.49 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 6 months** |
| Size | 6 MB | 2 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [yuuki iwamoto](https://appshunter.io/developer/1039662444) | [Medic Engineering K.K.](https://appshunter.io/developer/917118875) |

## What reviewers say

### Katamuki Checker

[App page](https://appshunter.io/ios/app/katamuki-checker/id1234081701)

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

**In-app purchases:** none


### SittingPostureCHECKER

[App page](https://appshunter.io/ios/app/sittingposturechecker-s/id1281866599)

**In-app purchases:** none


## Frequently asked questions

### Is Katamuki Checker free?

Katamuki Checker costs $0.49, with no in-app purchases.

### Is SittingPostureCHECKER free?

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

### Do Katamuki Checker or SittingPostureCHECKER have ads?

Neither Katamuki Checker nor SittingPostureCHECKER shows ads.

### Which is updated more often, Katamuki Checker or SittingPostureCHECKER?

Katamuki Checker ships an update every 18 months, and SittingPostureCHECKER every 6 months. Most recently, Katamuki Checker was updated on November 3, 2026 and SittingPostureCHECKER on November 3, 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.*