Support
Email trunghieu4121993@gmail.com with your device model, Android version and what happened. Screenshots help a lot.
Common questions
My Premium disappeared after changing phone
Sign in to the same Google account, open the app, then More › Restore purchases.
Save to gallery does nothing
On Android 9 and lower the app needs the Storage permission - allow it when asked, or enable it in Settings › Apps › Calmly › Permissions. Saved images are in Pictures › Color by Number.
A region is too small to tap
Pinch to zoom, or tap near it - the app picks the closest region of the selected colour. A hint fills the largest remaining region for you.
Can I reset a picture?
Long-press support is planned. For now, finished pictures can be replayed from My Works.
Request a picture or report an artwork problem
Email us with the picture name. All artwork is public-domain or CC0; credits are in More › Artwork credits.