# VitaDiary vs 双镜同拍

The clearest difference is iOS requirement: 双镜同拍 at 15.0 against VitaDiary's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. VitaDiary sells 2 in-app purchases, starting at $0.99 per year and 双镜同拍 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

VitaDiary ships an update every 3 days, 双镜同拍 every 2 days. The most recent releases landed on October 8, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | VitaDiary | 双镜同拍 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 days | **Every 2 days** |
| Size | 20 MB | 1 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [inphi tech](https://appshunter.io/developer/1746303075) | [科茗 王](https://appshunter.io/developer/1557609615) |

## What reviewers say

### VitaDiary

[App page](https://appshunter.io/ios/app/vitadiary/id6802295831)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vita+ Yearly Early Bird Discount | $0.99 | per year |
| Vita+ Yearly | $14.99 | per year |


### 双镜同拍

[App page](https://appshunter.io/ios/app/id6817363113)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 双镜同拍终身会员 | $0.99 | one-time |


## Frequently asked questions

### Is VitaDiary free?

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

### Is 双镜同拍 free?

双镜同拍 is free to download, with in-app purchases available.

### Do VitaDiary or 双镜同拍 have ads?

Neither VitaDiary nor 双镜同拍 shows ads.

### Which is updated more often, VitaDiary or 双镜同拍?

VitaDiary ships an update every 3 days, and 双镜同拍 every 2 days. Most recently, VitaDiary was updated on October 8, 2026 and 双镜同拍 on October 13, 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.*