yen-yen – Expense Tracker
Track spending. No bank login.
Free · Designed for iPad. Not verified for macOS.
Track every expense in seconds, across multiple accounts and currencies. Monthly budgets, bill reminders, photo receipts. No bank login. No ads. Free forever.
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.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
What's new in 1.4.0:
• Smart Statement Reconcile v2 + multi-format import pipeline (mobile+backend)
• UIUX elevation wave + code-review fixes (mobile+backend)
• Deploy elevation-wave RPCs + snapshot-net-worth cron (backend)
• A11y currency symbol in month comparison bars (mobile)
The developer, kensaurus LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Financial Info
- Contact Info
- User Content
- Identifiers
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- kensaurus LLC
- Size
- 73.4 MB
- Category
- Finance
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 kensaurus LLC