Penna combines the tactile warmth of a notebook with the precision of modern analysis. Features designed to refine your handwriting without overriding your intent.
A clear 1–10 legibility rating, plus five sub-scores: legibility, letter consistency, spacing, baseline alignment, and stroke quality. Anchored to everyday readability — not calligraphy craft.
Your photo is kept for up to 7 days so we can re-run an analysis or debug a complaint, then deleted automatically. Delete the analysis or your account any time to remove it sooner. No ads, no tracking. Full privacy policy →
Problem areas are marked directly on your photo — circles, carets, height guides, wavy underlines — drawn from precise coordinates the AI returns for each finding. Your original handwriting stays fully visible underneath.
Each improvement tip is pinned to a specific word from your actual writing. No generic advice — only context-aware tips.
One focused exercise targeting your single biggest issue. Pen and paper only — and a printable PDF practice sheet you can download for each analysis.
Past analyses live on-device and on your account, with a quick sparkline of recent scores. Detailed charts over time are coming in v1.5.
A quiet nudge a few days after each scan — "ready for another page?" — only if you've opted in. No streaks, no daily pressure, no shame. Practice happens at your pace.
An interface built for focus, not engagement metrics. No notification badges, no pressure-streaks, no gamification. Just you and the page.
Ready to start improving?