4 listings we've seen · as of 5 Oct 2026. This is the maker name shown on the store, not proof of who owns the company.

Tools

Calculate percentages, percentage change, discounts and markups instantly. Four calculators in one fast, offline extension.

Workflow & Planning

Minimal Pomodoro timer — focus and break cycles with badge countdown and notifications.

Tools

Convert time across cities with a draggable scrubber. Works offline, no data feed.

Tools

Convert length, weight, temperature, volume, area, speed, and time units — fast, offline, and free.