# 优牙库 vs 记忆时光相机

The clearest difference is in-app purchases: 优牙库 at none against 记忆时光相机's 3. 优牙库 also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.6). 记忆时光相机's advantage is update cadence (every 2 days vs monthly). On price and device support there is nothing between them.

Both are free to download. 记忆时光相机 sells 3 in-app purchases, starting at $9.99 per 7 days. 优牙库 asks for nothing beyond the download.

优牙库 ships an update monthly, 记忆时光相机 every 2 days. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | 优牙库 | 记忆时光相机 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id6742437283/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | — | Freemium |
| Size | 35 MB | 30 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [美吧](https://appshunter.io/developer/1798399852) | [KLHGADSL MOBILPHONE PTE. LTD.](https://appshunter.io/developer/6780388859) |

## What reviewers say

### 优牙库

[App page](https://appshunter.io/ios/app/id6742437283)

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

**In-app purchases:** none


### 记忆时光相机

[App page](https://appshunter.io/ios/app/and/id6808560851)

Transform your photos and videos with AI-powered features. Change hairstyles, make photos sing and dance, compress videos, and convert formats. Enjoy ample cloud storage and a variety of creative filters to enhance your content.

**Highlights:** AI hairstyle changes, Photo to singing animation, Photo to dancing animation, 500GB cloud storage, Video compression, Video format conversion, One-tap photo filters

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周会员 | $9.99 | per 7 days |
| 月会员 | $14.99 | per month |
| 季会员 | $39.99 | per 3 months |


## Frequently asked questions

### Is 优牙库 free?

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

### Is 记忆时光相机 free?

记忆时光相机 is free to download, with in-app purchases available.

### Do 优牙库 or 记忆时光相机 have ads?

记忆时光相机 shows ads; 优牙库 does not.

### Which is updated more often, 优牙库 or 记忆时光相机?

优牙库 ships an update monthly, and 记忆时光相机 every 2 days. Most recently, 优牙库 was updated on October 24, 2026 and 记忆时光相机 on October 26, 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.*