Rayakala / id Open Kalkulator → Money App

● 8 free calculators · no signup needed

Small tools,
calm ledgers.

Hi, I’m Rayakala. I track my own money with two tools I built: a monthly ledger and an investment calculator. Both are online and free for anyone to use, and Beruang doesn’t even ask you to sign up.

Try the kalkulator See the tools Get in touch

About

I build the tools I use.

I got tired of not knowing where my money went each month, and of return figures that ignore timing. So I built a monthly ledger that records actual spending per category, and calculators that report XIRR — the return after accounting for when money went in and out.

Both tools are free and Indonesian-first. Beruang runs without an account: what you type stays in your browser. Monthly Logs signs in with GitHub and keeps your numbers in your own database.

Projects

Live tools.

Monthly Logs

My monthly budget ledger. Bulanan records what I actually spent per category, Tahunan shows the 12-month picture, and the dashboard totals it up. Entry is keyboard-driven — Enter moves down a row, Ctrl+S saves. Signs in with GitHub; your numbers live in your own database.

RustAxumSQLitePreact/HTM

kas.rayakala.id →

Beruang — Kalkulator Investasi

Eight calculators I open before money decisions: XIRR on mutual funds, stocks with live IDX prices, deposit maturity dates, rent-vs-buy breakeven, flat-loan true cost, debt payoff plans, and retirement targets. No signup — what you type stays in your browser.

RustAxumPreact/HTMIDX

hitung.rayakala.id →

Now

What I’m up to.

Colophon: this page is a single Axum binary (~2 MB) serving embedded HTML/CSS/vanilla JS. No tracker, no framework. Total transfer < 50 KB.

Contact

Say hello.

Email is the fastest way to reach me. Just write.

socionomad@gmail.com