Academics
RatingForge
Build a rating system and watch it converge (and wobble). For teens: give six bots hidden true strengths, play a season, and watch Elo sort them — then change the K-factor and see the trade-off between fast and steady. Computed on-device; nothing leaves your device.
#4f46e5 Distributed-narrative cast
Meet the cast
RatingForge is an older-teen app, so its cast are realistic text case personas (no illustrations, R-OLDER-TEEN-DN-ADAPTED). They ask the statistician's questions before you trust a number.
Devi
The tournament statistician — a season is a measurement, not a verdict: one game is an anecdote, a season is data
Rourke
The rating-system designer — every choice (K, draw rule, uncertainty model) is a trade-off; what are we optimising for, and who does it cost?
What's inside
Learning goal
Build a rating system and watch it converge (and wobble). For teens: give six bots hidden true strengths, play a season, and watch Elo sort them — then change the K-factor and see the trade-off between fast and steady. Computed on-device; nothing leaves your device.
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 Devi — on-device AI, no data leaves the device.
How RatingForge 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
- ✅ COPPA compliant under the 2026 FTC amendments
- ✅ Parental controls + session limits + content filters built in
RatingForge 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
RatingForge 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