betFIRST

betFIRST is a utility toolkit designed for people who want quick answers without juggling multiple apps, everything from math to time management fits in one place.

The percentage calculator covers four modes: find X% of Y for tips and discounts, determine what percent one number is of another, apply percentage increases or decreases, and reverse-calculate the original value before any percentage was applied.

Three simultaneous countdown timers run independently in the stopwatch and timer tool, each can be named and will vibrate when it finishes, making parallel cooking, studying, or workouts easy to manage.

The calculator supports both standard mode for everyday arithmetic and scientific mode for sin, cos, tan, log, square roots, powers, and memory functions, with a running history of the last 10 calculations and a one-tap copy button.

betFIRST runs fully offline and requires no account or signup, open the app and every tool is ready to use right away.