# 知了 vs Braille Learning!

The clearest difference is in-app purchases: Braille Learning! at none against 知了's 10. 知了's advantage is ads (none vs shown) and update cadence (every 10 days vs every 3 months). On price, review sentiment and device support there is nothing between them.

Both are free to download. 知了 sells 10 one-off in-app purchases. Braille Learning! asks for nothing beyond the download.

知了 ships an update every 10 days, Braille Learning! every 3 months. The most recent releases landed on October 15, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 知了 | Braille Learning! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.5 (2 ratings)](https://appshunter.io/ios/app/braille-learning/id1502794153/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 77.8% of reviews | **85.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 10 days** | Every 3 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 59 MB | 18 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [红雷 于](https://appshunter.io/developer/1507920952) | [Kazuya Fujita](https://appshunter.io/developer/1358322690) |

## 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 |


### Braille Learning!

[App page](https://appshunter.io/ios/app/braille-learning/id1502794153)

This app offers a fun way to learn Braille through interactive quizzes and a timed challenge. It includes a learning mode to study specific characters and a quick reference chart for all Braille patterns. Designed for various learners, it aims to make Braille acquisition accessible.

**Highlights:** Random Braille quizzes, Timed attack mode, Character-specific learning, Braille pattern reference chart, Input Braille characters

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

**In-app purchases:** none


## Frequently asked questions

### Is 知了 free?

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

### Is Braille Learning! free?

Braille Learning! is free to download, with no in-app purchases.

### Do 知了 or Braille Learning! have ads?

Braille Learning! shows ads; 知了 does not.

### Which is updated more often, 知了 or Braille Learning!?

知了 ships an update every 10 days, and Braille Learning! every 3 months. Most recently, 知了 was updated on October 15, 2026 and Braille Learning! on October 27, 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.*