# Contour Detection vs Snore Recorder Pro

The clearest difference is ads: Snore Recorder Pro at none against Contour Detection's shown. Snore Recorder Pro also leads on iOS requirement (13.0 vs 17.7.2). Contour Detection's advantage is update cadence (fortnightly vs every 4 months). On price, 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.

Contour Detection ships an update fortnightly, Snore Recorder Pro every 4 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | Contour Detection | Snore Recorder Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 4 months |
| Size | 36 MB | 22 MB |
| Requires iOS | 17.7.2 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [Shin YuJin](https://appshunter.io/developer/413998995) |

## What reviewers say

### Contour Detection

[App page](https://appshunter.io/ios/app/contour-detection/id6511213082)

**Features:** macOS Compatibility

**In-app purchases:** none


### Snore Recorder Pro

[App page](https://appshunter.io/ios/app/snore-recorder-pro/id6761482130)

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

**In-app purchases:** none


## Frequently asked questions

### Is Contour Detection free?

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

### Is Snore Recorder Pro free?

Snore Recorder Pro is free to download, with no in-app purchases.

### Do Contour Detection or Snore Recorder Pro have ads?

Contour Detection shows ads; Snore Recorder Pro does not.

### Which is updated more often, Contour Detection or Snore Recorder Pro?

Contour Detection ships an update fortnightly, and Snore Recorder Pro every 4 months. Most recently, Contour Detection was updated on October 25, 2026 and Snore Recorder Pro on October 25, 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.*