diytools.io
● Open Β· No signup Β· Free
A one-person workshop Β· since 2026

Practical tools for people who manage their own money.

Free calculators for the financial questions that actually matter β€” net worth, debt, taxes, rent vs buy. Everything runs in your browser. Nothing leaves your device. No signup. No tracking. No upsell.

Made by Murali Β· solo Β· since 2026

The workbench

5 tools Β· more shipping

Why this exists

A short note

Most personal-finance software is bloated, signup-walled, or built to harvest your data. I wanted none of that β€” so I started making the tools I needed myself, one weekend at a time.

Each thing here does one job. No accounts. No tracking pixels. Nothing in the cloud. Open the tool, do the math, close the tab β€” it leaves nothing behind.

Frequently asked

Common questions
Is this really free?
Yes. No accounts, no paywalls, no upsells.
No signup Β· No tracking Β· Free

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Last shipped: Debt Visualizer Β· Next up: a no-nonsense SIP calculator