# 明白计算器 vs 随身小记

The clearest difference is update cadence: 明白计算器 at daily against 随身小记's every 5 days. 明白计算器 also leads on iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 明白计算器 sells 1 one-off in-app purchase and 随身小记 sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

明白计算器 ships an update daily, 随身小记 every 5 days. The most recent releases landed on November 5, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | 明白计算器 | 随身小记 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id6747792742/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 5 days |
| Size | 29 MB | 44 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [娜 李](https://appshunter.io/developer/1788016304) | [刚 王](https://appshunter.io/developer/1380585947) |

## What reviewers say

### 明白计算器

[App page](https://appshunter.io/ios/app/id6747792742)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 永久买断 | $0.99 | one-time |


### 随身小记

[App page](https://appshunter.io/ios/app/ai/id6753668059)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员 | $2.99 | per month |
| 年度会员 | $7.99 | per year |
| 终身会员 | $14.99 | one-time |


## Frequently asked questions

### Is 明白计算器 free?

明白计算器 is free to download, with in-app purchases available.

### Is 随身小记 free?

随身小记 is free to download, with in-app purchases available.

### Do 明白计算器 or 随身小记 have ads?

Neither 明白计算器 nor 随身小记 shows ads.

### Which is updated more often, 明白计算器 or 随身小记?

明白计算器 ships an update daily, and 随身小记 every 5 days. Most recently, 明白计算器 was updated on November 5, 2026 and 随身小记 on November 9, 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.*