÷DigitalCalculations

Tools that do the math, so you can get back to work.

Simple calculators and trackers for people who get paid by the shift, the job, or the exam score. No sign-ups. Your numbers stay on your phone.

Open Tip Book, it's free See all tools

The tools

Each one does one job well.

Free

Tip Book

A tip tracker built by a server, for servers. Log a shift in seconds and see what you're really making.

  • Tips per hour, best and worst shifts
  • Weekly and monthly goals, with a celebration when you hit them
  • What-if shifts to plan your week
  • Calendar and list views, five themes
  • Works offline and installs on your home screen
Open Tip Book
Tip Book on a phone, showing a weekly goal bar, this month's take-home tips and shift stats
On Etsy

Pressure Washing Quote Calculator

Price driveways, siding, decks and more by square footage, with your own rates. Send a consistent quote every time.

Example quote
Driveway · 600 sq ft$108.00
House siding · 1,800 sq ft$270.00
Total$378.00
Get it on Etsy ↗
Coming soon

SPI Physics Trainer

Practice questions with full explanations for the ARDMS Sonography Principles & Instrumentation exam, organized by the official outline.

Get notified