# PostureCHECKER vs Mattress Checker

The clearest difference is rating: Mattress Checker at 4.3 against PostureCHECKER's 2.0. Mattress Checker also leads on update cadence (every 2 months vs every 6 months) and iOS requirement (13.0 vs 15.0). PostureCHECKER's advantage is review sentiment (75% vs 50%). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

Mattress Checker holds the better App Store score, 4.3 against 2.0. Both are backed by a comparable volume of ratings — 3 and 4 respectively. Written reviews complicate that: 75% of PostureCHECKER's written reviews are positive against 50% of Mattress Checker's, so the app with the better star average is not the one people write more warmly about.

PostureCHECKER ships an update every 6 months, Mattress Checker every 2 months. The most recent releases landed on November 10, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | PostureCHECKER | Mattress Checker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (3 ratings)](https://appshunter.io/ios/app/posturechecker-s/id917118876/reviews) | **[4.3 (4 ratings)](https://appshunter.io/ios/app/mattress-checker/id959223688/reviews)** |
| Number of ratings | 3 | **4** |
| Positive reviews | **75.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 2 MB | 7 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Medic Engineering K.K.](https://appshunter.io/developer/917118875) | [EARTHONE ENTERTAINMENT LLC](https://appshunter.io/developer/648238845) |

## What reviewers say

### PostureCHECKER

[App page](https://appshunter.io/ios/app/posturechecker-s/id917118876)

Analyze your body's posture by taking a side-view photo. The app guides you to place markers on key points to assess alignment. It helps identify if your posture is straight but cannot diagnose medical conditions.

**Highlights:** Side-view photo analysis, Marker placement for key body points, Posture alignment assessment, Guidance on correct marker positioning, Identification of straight posture

**In-app purchases:** none


### Mattress Checker

[App page](https://appshunter.io/ios/app/mattress-checker/id959223688)

Objectively assess your mattress's spinal support using your device's camera. Analyze posture alignment by marking spinal points and let the app calculate support. Compare different mattresses and store findings to make informed purchasing decisions.

**Highlights:** Objective mattress support assessment, Spinal alignment calculation, Posture analysis via photo, Mattress comparison tool, Store and compare findings, Free expert consultation via email

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PostureCHECKER free?

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

### Is Mattress Checker free?

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

### Which has better reviews, PostureCHECKER or Mattress Checker?

Mattress Checker is rated higher. PostureCHECKER averages 2.0 out of 5 from 3 ratings, while Mattress Checker averages 4.3 from 4 ratings.

### Do PostureCHECKER or Mattress Checker have ads?

Neither PostureCHECKER nor Mattress Checker shows ads.

### Which is updated more often, PostureCHECKER or Mattress Checker?

PostureCHECKER ships an update every 6 months, and Mattress Checker every 2 months. Most recently, PostureCHECKER was updated on November 10, 2026 and Mattress Checker on November 1, 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.*