
yen-yen – Expense Tracker
Track spending. No bank login.
0 ratings
Free
About
Most budget apps want to log into your bank account.
yen-yen doesn't.
You type what you spent, hit save, and get on with your day. That's the whole interaction.
It's built around kakeibo (家計簿), the Japanese household-ledger habit that's been around for over a hundred years. Every entry asks four small questions:
· Did I need it?
· Did I just want it?
· Does it feed something I love?
· Did I see this coming?
Sit with the answers for a minute. That minute is the point.
FREE, FOREVER
Multi-account ledger across cash, banks, cards, and loans. Multi-currency with historical FX so a coffee in Tokyo last March still reads in JPY but totals correctly in your home currency. Budgets and bill reminders. Kakeibo classification on every entry. CSV / JSON import + export. Photo attachments for receipts. Account deletion you run yourself.
No ads. We don't sell your data. We never ask for your bank password.
OPTIONAL ADD-ONS
· Sharing a household ledger with a partner or roommate.
· AI-assisted statement parsing — you paste the lines, you approve every row, nothing auto-saves to your ledger.
· Longer audit retention.
· Priority support.
WHAT YEN-YEN WILL NEVER DO
· Connect to your bank.
· Auto-write AI guesses into your ledger.
· Send push notifications about your spending habits.
· Show ads.
ACCOUNT DELETION
In the app: Settings → Account → Delete. You get 14 days to undo it, after which the data is hard-deleted within 24 hours. The Data Safety form lists the same web flow at https://kensaur.us/yen-yen/account/delete.
HOSTING + PRIVACY
Hosted on Supabase, encrypted in transit and at rest.
Privacy policy: https://kensaur.us/yen-yen/privacy
Terms: https://kensaur.us/yen-yen/terms
Made by kensaurus LLC in Tokyo. Questions or bug reports go to yenyen@kensaur.us — a real human reads them.
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What's New in yen
1.22.1
August 6, 2026
What's new in 1.22.1: • Bug fixes and performance improvements.
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