STEM
RatioRealm
Master ratios, proportions, and percentages through real-world simulation contexts — recipe scaling in kitchens, blueprint ratios in construction, and map scales in cartography — with visual models and AI-driven difficulty adaptation. Ages 10-14.
Meet your mentor
Every Spark & Anvil app has a friendly mentor character that demonstrates, praises, 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.
#29B6F6 Hey there! Welcome to RatioRealm -- the app that helps you become a ratio superstar. This guide will show you everything you need to know.
Distributed-narrative cast
Meet the cast
RatioRealm sits in the **math-mountains zone** of AdventureHub (per `Resources/HubContributions/ratiorealm.json`, shipped labsmith PR #101) alongside ProofQuest, GeometryForge, and FunctionForge — all DN-aligned.
Pair the Ratio-Speaker
Simple ratios (a:b) — the foundational "for every A, there are B" pattern
Scale the Doubler
Equivalent ratios (scaling both parts by the same factor; recipe-doubling primitive)
Unit the Per-One-Counter
Rates and unit rates (the per-one normalization that lets us compare different rates)
Cross the Proportion-Solver
Proportions and cross-multiplication (the canonical "if a/b = c/d then ad = bc" mechanic)
Centa the Percent-Translator
Percentages — the per-hundred special case + percent change
What's inside
What Even Is a Ratio?
A ratio compares two numbers. Like if you have 2 cats and 3 dogs, the ratio of cats to dogs is 2 : 3. Ratios are everywhere -- in recipes, maps, sports stat
Starting the App
When you open RatioRealm, you'll see the Main Menu. Here's what you can do:
Choosing a Context
Tap Choose a Context to pick what kind of problems you want to solve:
Solving Problems
After you pick a context (or tap Quick Practice), you'll see a math problem. Here's how it works:
Mentored by Scale — on-device AI, no data leaves the device.
How RatioRealm 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
RatioRealm 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
RatioRealm 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