Chelsea
Luna Mangold-Takao
Staff Product Designer
Chelsea LunaMunich, DE
Chelsea
Selected work
2022 — 2026Live calendar events on a handwritten page, built AI-native
A side project I started, then sold to senior leadership with a prototype running on real calendar data.
Layers
One of the most-requested features, stuck for years as a huge build. Three of us found the real need and shipped it in weeks.
Discovery & Strategy
“Who is the professional user?” Three research rounds that became the company's framework.
Education → Learning platform
One insight became a dual-stream strategy adopted company-wide, with 5 shipped tools.
Shipped features
2022 — 2026- 2026 Layers One of the most-requested features, stuck for years as a huge build. Three of us found the real need and shipped it in weeks. Case study coming soon
- 2026 Handwriting → CSV export Demand was real, the wait screen wasn't. Shipped with the honest funnel. Case study coming soon
- 2025 Planner Creator A pipeline that turns Figma frames into 474-page print planners, in about a minute. Case study coming soon
- 2024 AI Math Assistance “Spell check for math”: hints instead of answers. Goodnotes blog (opens in a new tab)
- 2024 Time Keeper A study timer built as the start of performance tracking. Goodnotes Help Center (opens in a new tab)
- 2023 Tape Tool Turned a study hack students invented into a tool. The most-used learning feature in the product. Goodnotes blog (opens in a new tab)
- 2023 Study Sets Flashcards with a spaced-repetition algorithm co-designed with our ML engineer. Goodnotes blog (opens in a new tab)
- 2023 Study Navigator Navigation for 500-page textbooks without losing your place. Goodnotes Help Center (opens in a new tab)