# 心学问 vs 计算工具箱

The clearest difference is device support: 计算工具箱 at 2 against 心学问's —. 计算工具箱 also leads on iOS requirement (9.0 vs 12.0). On price and in-app purchases there is nothing between them.

Both are free to download. 心学问 sells 8 in-app purchases, starting at $2.99 per month and 计算工具箱 sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | 心学问 | 计算工具箱 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | — | No |
| Update frequency | — | Weekly |
| Size | 150 MB | 19 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | — | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [大林 陈](https://appshunter.io/developer/1195766548) | [MANTEN KAIHATSU Inc](https://appshunter.io/developer/1077623520) |

## What reviewers say

### 心学问

[App page](https://appshunter.io/ios/app/id1612762315)

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 连续包月 | $2.99 | per month |
| 连续包季 | $7.99 | per 3 months |
| 连续包年 | $29.99 | per year |
| 6元宝 | $0.99 | one-time |
| 18元宝 | $2.99 | one-time |
| 1个月 | $3.99 | one-time |
| 68元宝 | $9.99 | one-time |
| 128元宝 | $19.99 | one-time |


### 计算工具箱

[App page](https://appshunter.io/ios/app/id6448837084)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 解签 | $0.99 | one-time |
| 求签 | $0.99 | one-time |


## Frequently asked questions

### Is 心学问 free?

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

### Is 计算工具箱 free?

计算工具箱 is free to download, with in-app purchases available.

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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.*