MintForge

The money is the math. Figure out how interest grows, why a price has markup inside it, and how to split what you have — one clear step at a time.

Level 1

For grown-ups — progress report →A private, on-device snapshot mapped to the skill areas practiced. Export a CSV or print — nothing leaves this device.

Work the money math

Two hands-on money surfaces — grow real numbers and see it happen, and balance a budget when a surprise cost lands.

Money-Math Lab ✨ new Figure a markup, work out the interest on a loan payment, and predict how savings grow — then watch the balance climb and see why compound interest surprises almost everyone. Budget Balancer ✨ new Split a month's money into needs, wants, and savings to hit the 50/30/20 guideline — then a surprise expense hits and you rebalance to make it work. Market Sim ✨ new See how stocks swing, why spreading money across several softens the ups and downs, and why a 20% drop needs more than 20% to bounce back. A learning simulation — no real money, no trading, no gambling.

Practice the concepts

16 kits from counting coins up through investing, credit, taxes, and advanced synthesis — a short round with a hint whenever you get stuck. Your progress stays on this device.

Play together · new on the web

Money Duel — a head-to-head kit round for 2–4 players. Take turns on one device, or join a friend in an online room by code. Highest first-try score wins; no chat, no accounts.

⚔️ Start a Money Duel →

Mixed practice · new on the web

Shuffles questions across the kits you've learned and brings them back when they're ready to review — a calmer way to keep old skills fresh. On-device only; practice a couple of kits first.

🔀 Start Mixed practice →