# 上课不走神 vs Idiom Hot

The clearest difference is ads: 上课不走神 at none against Idiom Hot's shown. 上课不走神 also leads on iOS requirement (9.0 vs 15.0). Idiom Hot's advantage is update cadence (daily vs every 33 months). On price, in-app purchases and device support there is nothing between them.

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

上课不走神 ships an update every 33 months, Idiom Hot daily. The most recent releases landed on October 26, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 上课不走神 | Idiom Hot |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 33 months | **Daily** |
| Size | 33 MB | 53 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [涛 陈](https://appshunter.io/developer/1509220765) | [張 文展](https://appshunter.io/developer/6774598614) |

## What reviewers say

### 上课不走神

[App page](https://appshunter.io/ios/app/id1471859593)

**Features:** macOS Compatibility

**In-app purchases:** none


### Idiom Hot

[App page](https://appshunter.io/ios/app/idiom-hot/id6819954724)

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

**In-app purchases:** none


## Frequently asked questions

### Is 上课不走神 free?

上课不走神 is free to download, with no in-app purchases.

### Is Idiom Hot free?

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

### Do 上课不走神 or Idiom Hot have ads?

Idiom Hot shows ads; 上课不走神 does not.

### Which is updated more often, 上课不走神 or Idiom Hot?

上课不走神 ships an update every 33 months, and Idiom Hot daily. Most recently, 上课不走神 was updated on October 26, 2026 and Idiom Hot on October 31, 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.*