nuller

Michael Viehweg

In-app purchases

About this app

Nuller is the simplest way for freelancers to track billable hours and get paid for every minute they work.
Start a timer with one tap. Stop when done. nuller handles the rest.

Multiple clients, simultaneously
Running a call with one client while reviewing work for another? nuller lets you run multiple timers at the same time, each with their own hourly rate, currency, and colour.

Never miss a minute
nuller automatically rounds up to the nearest 15 minutes, the standard billing unit for professional freelancers. You always bill what you should.

Export in seconds
When it's time to invoice, nuller generates a clean formatted summary you can copy and paste directly into any invoicing tool. Share via email, WhatsApp, or SMS with one tap. Excel and PDF export available at nuller.app.

Built for how freelancers actually work

Multiple simultaneous timers
Pause and resume with automatic lunch break deduction
Forgot to start? Back-date the timer
Forgot to stop? nuller reminds you
Manual entry for sessions you forgot to log
Full history with notes on every session
Per-client rates in any of 150+ currencies
Smart alerts if a timer runs or pauses too long
Sync with nuller.app to access your data on the web

What’s new

Subscription screen clarity update; Android 16 (API 36) support; updated billing library