Butterfly
Free, ad-free Android notes and sketching on an endless canvas
Linwood
2 apps on TopDown APK
Linwood publishes two Android drawing apps listed in the TopDown APK catalog. Both titles sit in the drawing-apps category, and there are no Windows builds for this developer.
The first entry is Butterfly, last updated October 31, 2026. The second is Linwood Butterfly Nightly, last updated October 27, 2026.
Both apps use the AGPL-3.0-only license.
Apps by Linwood
Linwood Butterfly Nightly
Free open-source notes and sketching on an endless canvas, no ads