# 一万小时计划 vs VoltVault

The clearest difference is device support: VoltVault at 2 against 一万小时计划's —. On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | 一万小时计划 | VoltVault |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Fortnightly |
| Size | 1 MB | 1 MB |
| Requires iOS | 18.5 | **17.6** |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 9+ |
| Developer | [玉莲 胡](https://appshunter.io/developer/1756932830) | [朝霞 程](https://appshunter.io/developer/1889121684) |

## What reviewers say

### 一万小时计划

[App page](https://appshunter.io/ios/app/id6749955130)

**In-app purchases:** none


### VoltVault

[App page](https://appshunter.io/ios/app/voltvault/id6772879860)

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

**In-app purchases:** none


## Frequently asked questions

### Is 一万小时计划 free?

一万小时计划 is free to download, with no in-app purchases.

### Is VoltVault free?

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

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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.*