I built a handwriting notebook app where Claude writes back and it's the most fun I've had learning in years
https://docs.google.com/forms/d/e/1FAIpQLSfap2CRoiHLieDGQ-nhT45Jtm0yCjtXiPxM8lGzmjZcIbG_Ug/viewform
august 2026 ‧ claudeai reddit imported ‧ open in karakeep
From Reddit saved post — r/ClaudeAI, u/tokentrillionaire, Aug 25 2026
https://www.reddit.com/r/ClaudeAI/comments/1vxqbzs/i_built_a_handwriting_notebook_app_where_claude/
Penombra is forming an early test group open to users with any device, primarily focusing on Android with stylus support and iPad. Interested users can sign up to participate and provide feedback. The project aims to collaborate with those who resonate with its goals, and contact can be made via santiago@penombra.ai. A Google Form is provided for sign-up and device details.
Early test group forming now. Sign up whatever device you have : ) First release for Android with stylus and ipad. If you have any questions or this resonates with you and want to build this together lets connect — santiago@penombra.ai
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