Special Interest
StoneDojo
A Go study hall for ages 15–18 — play full 9×9 games against a graded bot and keep a reviewable archive, drill the six life-and-death archetypes in a calm rated tsumego ladder, and reason through real board decisions with a coach that explains in words. On-device; works signed-out; optional sign-in syncs your games and rating across your own devices.
▶ Play it nowBuilt for sittings of about 25 minutes on the screen. That is our design budget, not a measurement.
#3a5a8c Characters who teach
Meet the cast
StoneDojo's characters are realistic people, not mascots, and each one stands for one Go idea. Vitalis makes two eyes so a group lives, Rampart connects groups, Foresight reads a ladder to the edge, Weir nets a stone, and Rebound gives up one stone to capture more. Standoff, Impetus, Repose, Bulwark, and Coda cover shared life, moves that must be answered, playing elsewhere, outward strength, and the endgame. Meridian is the mentor who teaches reading before you place, and that a lost group is one lesson, not a verdict.
Vitalis
Life — the vital point that turns one big space into two eyes
Rampart
Connection — joining groups so they share every liberty (a dragon)
Foresight
The ladder — read the staircase to the edge before you start it
Weir
The net (geta) — trap a stone by covering its escape, no chase
Rebound
The snapback — sacrifice one stone so the capture takes the group
Standoff
Seki — mutual life where the strongest move is not to move
Impetus
Sente — spend your move only on threats you must answer
Repose
Tenuki — leave a finished area for the biggest point on the board
Bulwark
Influence — outward power (thickness) over immediate territory
Coda
Endgame (yose) — count, and take the biggest closing move
Meridian
read before you place; a lost group is one lesson
What's inside
Learning goal
A Go study hall for ages 15–18 — play full 9×9 games against a graded bot and keep a reviewable archive, drill the six life-and-death archetypes in a calm rated tsumego ladder, and reason through real board decisions with a coach that explains in words. On-device; works signed-out; optional sign-in syncs your games and rating across your own devices.
How StoneDojo handles your kid's data
- ✅ 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
StoneDojo 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
StoneDojo 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