STEM
MasteryForge
Portfolio-wide adaptive mastery practice for the math and STEM cluster. Three-option Next Problem surface (Extend, Consolidate, Stretch) with visible rationale. Spaced review brings each topic back before it fades. Ages 11-14.
▶ 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. On-device AI personalizes the mentor's responses to your kid's progress — never connecting to a server, never collecting data.
Mentored by Alcuin
#6F5BAE MasteryForge gives you a friendly map of math practice. Each session, it suggests three Next Problems — one to keep going (Consolidate), one slightly harder (Extend), and one well outside your comfort zone (Stretch) — and tells you why. Spaced-repetition memory tracking means you revisit a topic right when you'd otherwise start to forget it.
Characters who teach
Meet the cast
MasteryForge's cast helps you practise well: one knows what to try next, one gives hints but never the answer, one plays the long game, one keeps practice calm, and one shows where an idea reaches further than you thought.
Alcuin
Knows the map of ideas and what to try next
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Hint Hertha
Gives a hint that points the way, never the answer
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Practice Patience
Plays the long game - a little practice often beats a lot at once
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Streak Bear
Keeps practice calm - missing a day is fine; you pick up where you left off
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Stretch Sage
Shows where an idea you know reaches into new problems
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Spacing Wren
Spaced review — bringing a topic back just before you'd forget it, so it sticks
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Edge Goldi
Edge of competence — practicing at the just-right level where you grow fastest
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Mistake Mabel
Mistakes as information — every error is a map to what to practice next
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Mix Margo
Interleaving — mixing problem types so you learn to tell them apart and remember
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Recall Remy
Retrieval practice — closing the book and recalling beats rereading
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Browse all chapters → · What's distributed-narrative methodology? →
What's inside
Three Next Problems
Each round shows three options — Extend, Consolidate, Stretch — with the AI mentor's reasoning for each.
Spaced Retention
Topics resurface at the right moment to lock in memory. No more re-learning what you almost remembered.
Competition Ingest
Problems in the style of math competitions and problem books, woven into the daily flow.
Mastery Map
See the connections between topics. Find the unlocks. Watch your map grow.
Mentored by Alcuin — on-device AI, no data leaves the device.
How MasteryForge 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
MasteryForge 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
MasteryForge 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
