Academics
PopForge
Pop-up engineering. Pick a card, or set the distances and panel lengths yourself, and guess: will it fold flat, poke out of the closed card, or not fold properly? Then open and close it in 3-D and see the rule in numbers: a pop-up works when it's a parallelogram. Print the template, cut, fold and glue.
▶ Play it nowBuilt for sittings of about 20 minutes on the screen. That is our design budget, not a measurement.
#8a3b12 Distributed-narrative cast
Meet the cast
PopForge's paper engineers each know one rule of pop-ups. Hingely watches the spine, Flatsy checks that a design folds flat, Pokey spots the ones that poke out of a closed card, and Gluey knows where the tabs go.
Hingely
(Hero and guide, a paper-crane engineer) - everything turns about the spine, the fold in the middle of the card
Flatsy
A flat-folding lizard - a pop-up folds flat when it is a parallelogram: opposite sides equal
Pokey
A curious heron - closed, the fold sits depth plus height from the spine, so too big pokes out
Gluey
A beaver with glue - the panels must add up to the distance they lie along, or the paper tears or bows
What's inside
Learning goal
Pop-up engineering. Pick a card, or set the distances and panel lengths yourself, and guess: will it fold flat, poke out of the closed card, or not fold properly? Then open and close it in 3-D and see the rule in numbers: a pop-up works when it's a parallelogram. Print the template, cut, fold and glue.
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 Hingely — on-device AI, no data leaves the device.
How PopForge 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
PopForge 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
PopForge 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