# Mattress Checker vs Posture Correction

The clearest difference is in-app purchases: Mattress Checker at none against Posture Correction's 5. Mattress Checker also leads on update cadence (every 2 months vs every 6 months). Posture Correction's advantage is rating (4.6 vs 4.3) and review sentiment (68% vs 50%). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Posture Correction sells 5 in-app purchases, starting at $2.99 per month. Mattress Checker asks for nothing beyond the download.

Posture Correction holds the better App Store score, 4.6 against 4.3. That said, the two scores are not equally well evidenced: Posture Correction has 69 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 50% of Mattress Checker's written reviews are positive against 68% of Posture Correction's.

Mattress Checker ships an update every 2 months, Posture Correction every 6 months. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Mattress Checker | Posture Correction |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (4 ratings)](https://appshunter.io/ios/app/mattress-checker/id959223688/reviews) | **[4.6 (69 ratings)](https://appshunter.io/ios/app/posture-correction-tech-neck/id1494771315/reviews)** |
| Number of ratings | 4 | **69** |
| Positive reviews | 50.0% of reviews | **68.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | **Free** | Freemium |
| Size | 7 MB | 35 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 12+ |
| Developer | [EARTHONE ENTERTAINMENT LLC](https://appshunter.io/developer/648238845) | [AppsGO DOO](https://appshunter.io/developer/1494771314) |

## What reviewers say

### 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


### Posture Correction

[App page](https://appshunter.io/ios/app/posture-correction-tech-neck/id1494771315)

Improve your posture and relieve neck and back pain with guided exercises and stretches. This app helps correct forward head posture caused by prolonged screen time, offering simple workouts without equipment. Achieve better alignment for overall health and well-being.

**Highlights:** Guided posture correction exercises, Neck pain relief workouts, Back pain prevention exercises, Stretches for forward head posture, 5-minute guided workouts, No equipment required

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Silver | $2.99 | per month |
| 1 Month Subscription | $2.99 | per month |
| 1 Year Subscription | $14.99 | per year |
| Gold Subscription | $29.99 | per year |
| Platinum member | $40.99 | one-time |


## Frequently asked questions

### Is Mattress Checker free?

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

### Is Posture Correction free?

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

### Which has better reviews, Mattress Checker or Posture Correction?

Posture Correction is rated higher. Mattress Checker averages 4.3 out of 5 from 4 ratings, while Posture Correction averages 4.6 from 69 ratings.

### Do Mattress Checker or Posture Correction have ads?

Neither Mattress Checker nor Posture Correction shows ads.

### Which is updated more often, Mattress Checker or Posture Correction?

Mattress Checker ships an update every 2 months, and Posture Correction every 6 months. Most recently, Mattress Checker was updated on October 2, 2026 and Posture Correction on October 6, 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.*