Drawing Diary for drawing challenges

Hi, I wrote a free app "The Challenge of the Month: Drawing Diary" (https://play.google.com/store/apps/details?id=drawingDiary.brainlatch.com.drawingDiary) to manage monthly drawing challenges.
For now I added support for Inktober, Dinovember, Huevember. I would be glad if you would try and let me know what you think.
You can also send me your prompt (minimum 50 entries) with prompt name and I will add it to the app.
Thanks!