# 知了 vs 五年级英语下册

The clearest difference is update cadence: 知了 at every 10 days against 五年级英语下册's every 64 months. 知了 also leads on iOS requirement (9.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 知了 sells 10 one-off in-app purchases and 五年级英语下册 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

知了 ships an update every 10 days, 五年级英语下册 every 64 months. The most recent releases landed on October 15, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | 知了 | 五年级英语下册 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 64 months |
| Monetization | Free with in-app purchases | — |
| Size | 59 MB | 135 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [红雷 于](https://appshunter.io/developer/1507920952) | [卫英 肖](https://appshunter.io/developer/1220418402) |

## What reviewers say

### 知了

[App page](https://appshunter.io/ios/app/id1382487722)

A comprehensive learning platform designed for visually impaired individuals to acquire knowledge and skills. It aims to empower users to build a better life through accessible educational content.

**Highlights:** Knowledge acquisition, Skill development, Accessible learning environment, Community-driven content, Empowering visually impaired users

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6知币 | $0.99 | one-time |
| 12个知币 | $1.99 | one-time |
| 18个知币 | $2.99 | one-time |
| 30个知币 | $4.99 | one-time |
| 68个知币 | $9.99 | one-time |
| 88个知币 | $12.99 | one-time |
| 128个知币 | $19.99 | one-time |
| 208个知币 | $30.99 | one-time |
| 388个知币 | $59.99 | one-time |
| 998个知币 | $149.99 | one-time |


### 五年级英语下册

[App page](https://appshunter.io/ios/app/pep/id1555851921)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 解锁全部章节内容 | $3.99 | one-time |


## Frequently asked questions

### Is 知了 free?

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

### Is 五年级英语下册 free?

五年级英语下册 is free to download, with in-app purchases available.

### Do 知了 or 五年级英语下册 have ads?

Neither 知了 nor 五年级英语下册 shows ads.

### Which is updated more often, 知了 or 五年级英语下册?

知了 ships an update every 10 days, and 五年级英语下册 every 64 months. Most recently, 知了 was updated on October 15, 2026 and 五年级英语下册 on September 20, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*