1&9 Chinese Characters app for iPhone and iPad

This app helps you learn Chinese characters by listening and speaking with voice and speech recognition.

If you want to learn Chinese, or you speak Chinese but don’t know how to read, you can learn 2000 commonly used Chinese characters with the help of this app. After learning all 2000 commonly used Chinese characters, you should be able to read simple articles in Chinese.

Spaced repetition is the main technique used to learn the listening, speaking, and reading of Chinese characters. Based on your personal progress, new characters are introduced according to their character frequency, most common ones first.

The following are included in the app:
- 2000 most commonly used Simplified Chinese characters.
- 2000 most commonly used Traditional Chinese characters.
- 10000+ commonly used Chinese words.
- 1000+ synonyms, antonyms.
To fully master their meaning and usage, you are recommended to learn and practice in an interactive Chinese environment.

Features:
- You may choose to learn either Simplified Chinese characters or Traditional Chinese characters and switch at any time.
- You may choose characters by speech.
- You may choose to use Pinyin or Zhuyin for phonetic notation, or both in the desired order, or none.
- You may choose to display variant Chinese characters if desired.
- Homophonic and heteronym characters and words are properly handled.
- You may learn Pinyin or Zhuyin with Silent Mode.
- You may learn offline or in a noisy environment with Silent Mode.
- You may use multiple devices and your progress will be synced automatically.
- You may learn related characters like synonyms and antonyms.

Note:
It is free to learn the top 100 most commonly used Chinese characters. With the paid upgrade, you can learn all of 2000 commonly used Chinese characters.
The authorization for the use of microphone and speech recognition is required.
Please stay online and keep Siri enabled while learning. Silent Mode can be used offline.
Required Chinese fonts, if not preinstalled on the device, will be downloaded and installed.