# 图片格式转换 vs Private ID Photo

The clearest difference is device support: 图片格式转换 at 3 against Private ID Photo's 1. 图片格式转换 also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 图片格式转换 sells 2 in-app purchases, starting at $0.99 per 7 days and Private ID Photo sells 2 in-app purchases, starting at $0.69 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 图片格式转换 | Private ID Photo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 days | Every 2 days |
| Size | 19 MB | 2 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [炎蔚 张](https://appshunter.io/developer/1676178960) | [毅 林](https://appshunter.io/developer/6792823023) |

## What reviewers say

### 图片格式转换

[App page](https://appshunter.io/ios/app/id6447889172)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周卡会员 | $0.99 | per 7 days |
| 永久会员 | $7.99 | one-time |


### Private ID Photo

[App page](https://appshunter.io/ios/app/private-id-photo/id6793521147)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| IDPhoto VIP Monthly | $0.69 | per month |
| IDPhoto VIP Lifetime | $0.99 | one-time |


## Frequently asked questions

### Is 图片格式转换 free?

图片格式转换 is free to download, with in-app purchases available.

### Is Private ID Photo free?

Private ID Photo is free to download, with in-app purchases available.

### Do 图片格式转换 or Private ID Photo have ads?

Neither 图片格式转换 nor Private ID Photo shows ads.

### Which is updated more often, 图片格式转换 or Private ID Photo?

图片格式转换 ships an update every 2 days, and Private ID Photo every 2 days. Most recently, 图片格式转换 was updated on October 30, 2026 and Private ID Photo on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*