# 留痕 vs Comparison Camera

The clearest difference is update cadence: 留痕 at daily against Comparison Camera's every 3 weeks. On price, ads, 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.

留痕 ships an update daily, Comparison Camera every 3 weeks. The most recent releases landed on October 4, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 留痕 | Comparison Camera |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Every 3 weeks |
| Size | 42 MB | 5 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [旺 凌](https://appshunter.io/developer/1829377011) | [逸飞 卢](https://appshunter.io/developer/1870135150) |

## What reviewers say

### 留痕

[App page](https://appshunter.io/ios/app/id6757773184)

**Features:** macOS Compatibility

**In-app purchases:** none


### Comparison Camera

[App page](https://appshunter.io/ios/app/comparison-camera/id6758914939)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 留痕 free?

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

### Is Comparison Camera free?

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

### Do 留痕 or Comparison Camera have ads?

Neither 留痕 nor Comparison Camera shows ads.

### Which is updated more often, 留痕 or Comparison Camera?

留痕 ships an update daily, and Comparison Camera every 3 weeks. Most recently, 留痕 was updated on October 4, 2026 and Comparison Camera on October 5, 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.*