← All apps

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 now

Built for sittings of about 20 minutes on the screen. That is our design budget, not a measurement.

Icon coming soon
Live In planning Swift 6 · SwiftUI · FoundationModels CCSS.MATH.CONTENT.4.G.A.3 CCSS.MATH.CONTENT.8.G.A.1 Hero color: #2C5E7A
Engagement:

Distributed-narrative cast

Meet the cast

Lineup lines the edges up; Kirri cuts once, ever.

L

Lineup

Folds until every edge lies on one line — then calls for the scissors

K

Kirri

Cuts exactly once, and only when everything is lined up

E

Edgely

Brings one edge onto another, so the fold lands on a mirror line

S

Snipwell

Punches one hole and predicts every hole that will appear

What's distributed-narrative methodology? →

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.

📚

Question kits

16 curriculum-aligned kits × 25 questions = 400 questions per app, mapped to recognized standards.

🤖

On-device AI mentor

FoundationModels-powered hints, feedback, and adaptive difficulty — all running locally.

Mentored by Lineup — on-device AI, 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
  • ✅ No ads, no in-app purchases — you pay once
  • ✅ No personal information collected from children — in line with COPPA (updated by the 2026 FTC amendments)
  • ✅ Parental controls + session limits + content filters built in

Full parent privacy guide →

Built with ForgeKit

OneCutQuest runs on ForgeKit — the open-source Swift Package Manager framework that powers every Spark & Anvil app. ForgeKit ensures consistent accessibility, COPPA compliance, and design language across the portfolio, so your kid's progress and preferences feel coherent across every app they touch.

Coming to the App Store

OneCutQuest is in active development. Email us to hear when it ships — no marketing, no spam, just a one-shot launch announcement.

Email me at launch

Kids also liked