# Straight Back vs Uncurled

The clearest difference is in-app purchases: Straight Back at none against Uncurled's 4. Straight Back also leads on device support (3 vs 1) and iOS requirement (7.0 vs 16.4). Uncurled's advantage is update cadence (every 4 days vs every 6 months). On price and ads there is nothing between them.

Both are free to download. Uncurled sells 4 in-app purchases, starting at $6.99 per 7 days. Straight Back asks for nothing beyond the download.

Straight Back ships an update every 6 months, Uncurled every 4 days. The most recent releases landed on October 14, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Straight Back | Uncurled |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 1 MB | 57 MB |
| Requires iOS | **7.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Georgi Zlatinov](https://appshunter.io/developer/923406673) | [Julius Cherubini](https://appshunter.io/developer/1896329120) |

## What reviewers say

### Straight Back

[App page](https://appshunter.io/ios/app/straight-back/id1067970446)

This app helps you maintain a healthy, straight posture while sitting or standing. It uses your device to monitor your posture and provides gentle reminders to correct it, aiming to build long-term healthy habits and improve overall well-being.

**Highlights:** Posture monitoring, Gentle reminders (tone/vibration), Customizable settings, Daily use for habit formation, Suitable for all ages

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

**In-app purchases:** none


### Uncurled

[App page](https://appshunter.io/ios/app/uncurled-posture-training/id6809813741)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Uncurled Pro Weekly | $6.99 | per 7 days |
| Uncurled Pro Weekly | $7.99 | per 7 days |
| Uncurled Pro Yearly | $29.99 | per year |
| Uncurled Pro Yearly | $39.99 | per year |


## Frequently asked questions

### Is Straight Back free?

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

### Is Uncurled free?

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

### Do Straight Back or Uncurled have ads?

Neither Straight Back nor Uncurled shows ads.

### Which is updated more often, Straight Back or Uncurled?

Straight Back ships an update every 6 months, and Uncurled every 4 days. Most recently, Straight Back was updated on October 14, 2026 and Uncurled 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.*