Academics
HintForge
A word-connection game for ages 9–14: nine words hide three groups that share a meaning — find them. The twist: you can only play a word once you've shown you know what it means (the Meaning Rule). Trains vocabulary by meaning, not spelling. On-device; nothing leaves your device.
▶ 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 Nella
#4338CA Characters who teach
Meet the cast
HintForge's cast each embody one connection-game idea; guide Nella asks “what do these three words share?” before you lock a group in — and nobody plays a word until they can say what it means.
Nella
connection-vision — ask what three words share before you group them
Meara
The Meaning Rule — you can't play a word until you show what it means
Akin
Kinship — the words that belong to the same family of meaning
Astray
The odd one out — the word that doesn't belong with the others
What's inside
Learning goal
A word-connection game for ages 9–14: nine words hide three groups that share a meaning — find them. The twist: you can only play a word once you've shown you know what it means (the Meaning Rule). Trains vocabulary by meaning, not spelling. On-device; nothing leaves your device.
Mentored by Nella — no data leaves the device.
How HintForge 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