# 爱下电子书 vs POSU

The clearest difference is ads: POSU at none against 爱下电子书's shown. 爱下电子书's advantage is update cadence (every 2 months vs every 21 months). On price, in-app purchases, device support 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.

爱下电子书 ships an update every 2 months, POSU every 21 months. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 爱下电子书 | POSU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (28 ratings)](https://appshunter.io/ios/app/id1358196637/reviews)** | — |
| Number of ratings | **28** | — |
| Positive reviews | 41.5% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 21 months |
| Size | 26 MB | 3 MB |
| Requires iOS | **12.0** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [thom Kenisha](https://appshunter.io/developer/1355449765) | [Hsu Bering](https://appshunter.io/developer/1469006942) |

## What reviewers say

### 爱下电子书

[App page](https://appshunter.io/ios/app/id1358196637)

**Features:** macOS Compatibility

**In-app purchases:** none


### POSU

[App page](https://appshunter.io/ios/app/posu/id1642876556)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 爱下电子书 free?

爱下电子书 is free to download, with no in-app purchases.

### Is POSU free?

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

### Do 爱下电子书 or POSU have ads?

爱下电子书 shows ads; POSU does not.

### Which is updated more often, 爱下电子书 or POSU?

爱下电子书 ships an update every 2 months, and POSU every 21 months. Most recently, 爱下电子书 was updated on October 24, 2026 and POSU on October 14, 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.*