Spendjar: Expense Calculator

Spendjar is an expense tracker built around the thing you actually do at the end of a purchase: add numbers up.

Open the keypad, type 240+60+18% the way you would on a calculator, and Spendjar books the total while remembering exactly how you got there. No forms, no dropdown maze, no sign-up.

WHY IT FEELS DIFFERENT

• Calculator-first entry
Lunch plus the ride back plus the tip is one entry, not three. Type the sum, tag it, save it. The expression stays attached to the entry, so next month you still know what the 240 and the 60 were.

• Jars instead of one big budget
Split the month into jars — eating out, rides, fun money, whatever bleeds you. Each jar is a glass that fills as you spend, tilts gently while it is safe, and turns red the moment you cross the line. You see trouble at a glance instead of digging through a report.

• Time cost
Tell Spendjar what an hour of your work earns (or just type your monthly salary and let it do the maths). Every total then carries a second price tag: 2h 30m of work, half a work day, three work days. Nothing changes spending habits faster than seeing a number in hours.

• Spend fingerprint
Every month gets a heatmap. Dark squares are heavy days, empty squares are the days you kept the wallet shut. Tap any square to see exactly what happened that day. Under it, Spendjar tells you which day of the week costs you most, how many no-spend days you managed, and where the month is heading if you carry on at this pace.

• A projection that arrives early
The home screen shows today, your average per day, and where the month lands at this rate — before the overspend happens, not after.

FULLY OFFLINE, FULLY YOURS

There is no account, no cloud, no ad network and no analytics. Everything lives in this app's storage on your phone. Export a JSON backup whenever you want, erase everything with one tap, and know that nothing was ever sent anywhere. Spendjar works exactly the same in flight mode.

BUILT FOR EVERYDAY SPENDING

• Eight categories with quick chips — food, travel, bills, shopping, fun, health, home, other
• Backdate an entry to yesterday or the day before in one tap
• The percent key reads as "18% of 500", so GST and tips take one keystroke
• Indian and international currency symbols
• Five accent themes that recolour the entire app
• Tabular, high-contrast dark interface designed for one-handed use

WHO IT IS FOR

People who have tried heavyweight finance apps, got tired of syncing bank accounts and categorising imports, and just want a fast honest record of where the money went — plus a nudge, in hours, about what it cost them.

Download Spendjar, log one spend, and check how long you worked for it.