SURVIVAL APPSEcoSurvivor
EcoSurvivor is a personal finance manager that treats your budget like the supplies in a bunker: income and expenses become reserves, category budgets become rations, and a survival index tells you with a single number how long you'd last at your current pace. Under the narrative skin, the job is the same as it has always been: write down where your money goes until you actually start to see it. It's not a new idea — it's over a century old.
The ancestor: Japanese kakebo
In 1904, Hani Motoko — the first woman to work as a journalist in Japan — published a household accounting method designed for the families of her country: the kakebo (家計種, kakeibo), literally the «household ledger». It wasn't a technical invention: it was a discipline. A notebook, a pen, half an hour at the start of the month to set your income and a savings goal, and a daily record of every expense, split into four categories — needs (food, home, transport), culture and personal growth, leisure and extras, and the unexpected. At the end of the month, a written reflection: what went well, what to change.
The principle behind kakebo is almost philosophical before it's financial: writing by hand slows you down, and slowing down forces you to look. It isn't the math of saving that does the work on its own — it's the awareness that comes from putting it down in writing, with your own hands, where every yen you spend goes. More than a century later, the method is still taught and practiced, even outside Japan, precisely because that discipline of attention has never gone out of style.
How it works
- RESERVES — your total balance, updated with every entry you log, with a chart of the last twelve months
- RATIONS — monthly budgets by category (food, shelter, transport, fuel, medical…), with a bar that warns you when you go over — the most direct legacy of kakebo's four categories
- SURVIVAL INDEX — a number from 0 to 100 calculated from your savings rate and how well you stick to your rations
- FIELD MANUAL — ten chapters of financial education, to read whenever you have a spare minute
- LOG — every transaction, filterable, deletable with a long press
- OFFLINE BY DESIGN — no account, no cloud, no ads: your data stays on your phone
See it in action
You have the right to withdraw within 14 days of purchase, as provided by EU distance-selling regulations.
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