Ý Như Đỗ
- Gắn cờ nội dung không phù hợp
- Xem nội dung đánh giá trước đây
There are many basic lessons in app, easily to understand and a dictonary for sign language, you can search the sence you don't know and app will release all signs you need ( very useful). If you want to learn more you have to pay ( from lesson 2 ). App also help you practice with Ai and camera on smart phone, if you do correctly, you can skip to the next sign.