STEM
ApprenticeDojo
The trades run on maths every apprentice must get exactly right - because the number IS the safety. Ohm's law sizes a wire so it won't overheat; a cooling load sizes an air conditioner; a quarter-inch-per-foot slope makes a drain actually drain. Predict the calculation, reveal the working and the code behind it, then run the numbers yourself in the Trade lab. Real electrical, HVAC and plumbing maths - no internet. Ages 15-18.
#4a5568 Distributed-narrative cast
Meet the cast
ApprenticeDojo is text-forward (R-OLDER-TEEN-DN-ADAPTED, ages 15-18) - no illustrated cast; the 'characters' are the four trade rules whose arithmetic IS the safety. OHM: volts push, ohms resist, amps flow - amps = volts divided by ohms, and amps are what a wire has to survive. THE BREAKER PROTECTS THE WIRE, not the appliance, so its rating can never exceed what the wire can safely carry (12-gauge copper = 20 A, 14-gauge = 15 A). THE 80% RULE: a continuous load may not exceed 80% of the breaker - rated for a sprint, sized for a marathon. SLOPE AND SIZE: a drain is a ramp for gravity at a quarter inch per foot, and an air conditioner is sized to the load (area x 25 BTU, 12,000 BTU per ton). Every calculation is computed on-device by a real, deterministic trade-math engine - nothing hand-waved, nothing leaves the device. Illustrated portraits/chapters/audio are N/A for the older-teen band, not a follow-on.
Ohm
Volts push, ohms resist, amps flow: current = volts / ohms and power = volts x amps, so amps are the number the wire and breaker must survive
The Breaker
Protects the WIRE, not the appliance - its rating can never exceed the wire's ampacity, so 12-gauge copper takes a 20 A breaker and 14-gauge only 15 A
The 80% Rule
A continuous load (3+ hours) may not exceed 80% of the breaker rating - a 20 A breaker carries only 16 A all day, the trades' margin of safety as arithmetic
Slope and Size
A drain slopes a quarter inch per foot so it drains without clogging, and an AC is sized to the load: area x 25 BTU, at 12,000 BTU per ton
What's inside
Learning goal
The trades run on maths every apprentice must get exactly right - because the number IS the safety. Ohm's law sizes a wire so it won't overheat; a cooling load sizes an air conditioner; a quarter-inch-per-foot slope makes a drain actually drain. Predict the calculation, reveal the working and the code behind it, then run the numbers yourself in the Trade lab. Real electrical, HVAC and plumbing maths - no internet. Ages 15-18.
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.
How ApprenticeDojo 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
ApprenticeDojo 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
ApprenticeDojo 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