If you are not used to typing try typing practice.
You can improve your typing speed.

There is also a function to adjust the font size for those with blurred eyes.

Recommend it to your acquaintances who reply to messengers late due to the slow typing speed on smartphones.
It will help you a lot~

function
1. Word practice (1100 words)
2. Sentence practice (930 proverbs)
3. Games (venetian format)
4. Statistics (shows speed/practice time/practice typing count by day)