Centsei: Expense Tracker

Centsei is a private, offline-first expense tracker built for people who just want to know where their money goes — without handing their financial life to a cloud server.

YOUR DATA STAYS YOURS
• Everything is stored on your device. No sign-up, no login, no account required.
• No ads. No trackers. We never see your numbers.
• Optional cloud sync is end-to-end encrypted with a code only you hold — even we can't read it.

FAST, HONEST MONEY TRACKING
• Add an expense or income in seconds with clean, tappable categories.
• Built for Malaysian Ringgit (RM) with proper formatting — amounts are always calculated to the exact cent.
• Beautiful monthly reports: spending, income, balance, and a category breakdown at a glance.

BUDGET & PLAN
• Set a monthly budget and get a gentle nudge before you overspend — overall and per category.
• Recurring expenses auto-fill each month, so rent and subscriptions are never forgotten.
• A 6-month trend shows whether you're heading the right way.

FIND ANYTHING
• Search and filter your entries instantly.
• Tap any category to drill into its line items.

PRIVATE BY DESIGN
• Lock the app with a PIN.
• Works fully offline — open it on a plane, in the basement, anywhere.
• Export your data anytime as JSON or CSV. It's your money; it's your data.

BILINGUAL
• Full Traditional Chinese and English — switch any time.

Centsei is designed to be the calmest, most private money tracker on your phone. Open it, log it, get on with your day.