math
OneCutQuest
Houdini put it in his book of paper tricks: fold a sheet, snip once, open — a perfect star. Fold the paper so every edge of a shape lands on one line, make your one cut, and see what falls out. Then do it with real scissors.
▶ Play it nowBuilt for sittings of about 20 minutes on the screen. That is our design budget, not a measurement.
Meet your mentor
Every Spark & Anvil app has a friendly mentor character that demonstrates, asks, and patiently scaffolds learning.
Mentored by Lineup
#2C5E7A Characters who teach
Meet the cast
Lineup lines the edges up; Kirri cuts once, ever.
Lineup
Folds until every edge lies on one line — then calls for the scissors
Kirri
Cuts exactly once, and only when everything is lined up
Edgely
Brings one edge onto another, so the fold lands on a mirror line
Snipwell
Punches one hole and predicts every hole that will appear
What's inside
Learning goal
Houdini put it in his book of paper tricks: fold a sheet, snip once, open — a perfect star. Fold the paper so every edge of a shape lands on one line, make your one cut, and see what falls out. Then do it with real scissors.
Mentored by Lineup — no data leaves the device.
How OneCutQuest handles your kid's data
- ✅ All progress, settings, and AI-generated content stays on the device
- ✅ No analytics, no tracking, no third-party SDKs
- ✅ Free — no ads, no in-app purchases
- ✅ No personal information collected from children — in line with COPPA (updated by the 2026 FTC amendments)
- ✅ No chat with strangers — play-together rooms use a short code and preset emotes, never typed messages