iKasa

iKasa

Shelter every cent

Built for iPhone, end-to-end encrypted personal finance. Plaintext never leaves your device. Monthly reports, notes, and reminders all included.

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๐Ÿ”’ XChaCha20 + Argon2id ๐Ÿ“ฑ Face ID + Widget โ™พ๏ธ Free forever
iKasa login screen
Login ยท iOS

Why iKasa

Not a feature pile โ€” the basics, done right.

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True end-to-end encryption

Your password never leaves your device. Server stores ciphertext only โ€” even we can't read it. A 12-word recovery phrase saves you if you forget the password.

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Multi-currency & multi-language

JPY, CNY, USD, EUR, GBP. UI in ไธญๆ–‡ / English / ๆ—ฅๆœฌ่ชž. Built for travelers, students abroad, and the global crowd.

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Crisp monthly reports

Category ranking, pie breakdown, one-click CSV export. No more Excel for your budget.

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Encrypted notes + reminders

Notes are E2E too โ€” pin, color, write whatever. Set a date, get a native local notification on time.

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Real auto theme

Light by day, dark by night โ€” or pick manually. Tap-to-ripple transitions, every micro-animation polished.

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Built for iPhone, ground up

Face ID unlock, home-screen widget, native local notifications. The cryptographic core is hand-written Rust compiled to WebAssembly โ€” no third-party SDKs, no analytics, no trackers.

Get iKasa

Pick your device, take it away

FAQ

Is it really free? Will it stay free?

Yes. Core features (tracking, monthly reports, notes, encrypted sync) are free forever. We may later add a Pro tier (team, multiple ledgers) โ€” but the single-user core stays free.

What if I forget my password?

On signup we give you a 12-word recovery phrase. Write it down or save in 1Password / Bitwarden. With the phrase you can reset your password and decrypt your data again. This is the only path back โ€” the server has no key.

Where is my data stored?

Locally on your device (IndexedDB or SQLite, depending on platform), encrypted. Cloud copy on a Tokyo VPS (XServer) over HTTPS / Let's Encrypt. Server only sees ciphertext; keys never leave you.

Does it sync across devices?

Yes. Sign in on any device with your email + password โ€” data syncs automatically. Each device only sees plaintext after decrypt. Sign-out clears the local cache (or use the 30-day Remember-Me toggle).

How do reminders work on iPhone?

iKasa uses native local notifications โ€” no remote push server, works fully offline. Set a date on any record or note and iOS will ring it at the scheduled time.