Cashmap - 家計簿・カップル割り勘

"Where did my money go this month?" — Cashmap answers that question at a glance. It's a fresh take on budgeting: your money flow, visualized as a Sankey diagram.

Forget staring at endless rows of numbers. Cashmap draws your income, wallets, and spending as one clear picture — so you instantly see your habits and spot the waste.

◆ LOG EXPENSES IN 3 SECONDS

• Calculator-style keypad: type the amount, pick a category and wallet, done
• Set a default wallet to make it even faster
• Register subscriptions and rent once — they're logged automatically every month, with a monthly total at a glance

◆ SEE YOUR MONEY FLOW

• Income → wallets → spending, visualized as a Sankey diagram
• Switch to a waterfall chart to see your balance rise and fall
• Review by week, month, or year
• Watch your savings grow on the asset trend chart

◆ STAY ON BUDGET

• Set a monthly budget per category
• Get a heads-up mid-month when you're spending at an over-budget pace

◆ SPLIT BILLS, WITHOUT THE HEADACHE

• Split groups that feel like a group chat — with unlimited members
• Split evenly in one tap, or set custom ratios
• Per-person repayment status shows exactly who has paid you back
• Send a reminder notification to anyone who hasn't settled up
• No more tracking IOUs in your head or in screenshots

◆ ONE APP FOR THE TWO OF YOU

• Share your household budget as a couple, with real-time sync across devices
• Keep shared and personal wallets separate — privacy included

◆ PRIVATE & SECURE

• Hide amounts with a privacy toggle — safe to open on the train
• Local mode works without an account; your data stays on your device
• Light and dark themes

PERFECT FOR

• Anyone who has given up on budgeting apps before
• Anyone who wants a real picture of monthly income and spending
• Couples and roommates managing money together
• Anyone tired of chasing friends for their share
• Anyone who wants a simple, beautiful budgeting app

Try it instantly — no account needed in local mode.