Tasu — Time Calculator
Add and subtract hours and minutes instantly.
No sign-up, no subscription — just your time.
Coming soon€1.99 · One-time purchase
Designed to stay out of your way
Everything you need, nothing you don't
A time calculator that does one thing and does it well.
Instant time math
Add and subtract hours and minutes. Type a number, tap Add or Sub — done.
Two modes
Work in hours:minutes or pure minutes. Switch with a tap — or a shake.
Shake to switch
Give your iPhone a shake to toggle between H:M and minutes mode instantly.
History & undo
Every entry is saved in your calculation history. Undo the last one with a tap.
Copy results
Copy the total to your clipboard with one tap. Paste it anywhere you need.
Light & dark
Beautiful warm themes that follow your system preference — or toggle manually.
Built for people who work with time
Whether you bill by the hour, log flight time, or plan schedules — Tasu makes it simple.
Freelancers
Track billable hours across multiple clients and projects. Sum your weekly totals in seconds.
Pilots & crew
Calculate flight and duty times. Add legs, subtract breaks, keep a running total.
Project managers
Sum team hours for sprint planning. Calculate time estimates without a spreadsheet.
Teachers & tutors
Plan lesson durations, calculate total teaching hours, manage your weekly schedule.
One price. Yours forever.
One-time purchase
- No subscription
- No in-app purchases
- No ads
- All future updates included
Coming soon