አል-ኡሱሉ ሰላሳ ደርስ ቁጥር 01 is a free Android learning application developed by Huda Soft. This comprehensive app is designed to help users learn ደርስ (Amharic language) from scratch. The app provides a complete course that covers all the basics of the language, including grammar, vocabulary, and sentence structure.

The app offers a wide range of learning materials, including audio and video lessons, as well as written lessons in both ድምፅ (Amharic script) and English. The course is divided into 100 lessons, and each lesson covers a specific topic. The first 50 lessons are available for free, while the remaining 50 lessons can be accessed by purchasing the second part of the app.