Offline

InstaCalc works without a network connection.

InstaCalc is a Progressive Web App. After your first visit, it runs from your browser’s cache.

Works offline

  • Editing and running calcs
  • Switching between Calc / Text / Present views
  • Saving to My Calcs
  • Loading any calc you’ve opened before

Needs the network

  • Opening a calc you haven’t seen before
  • Remote sources (GitHub .ic files, currency rates, stock prices)
  • Voting on the roadmap
  • Signing in

Install as an app

Chrome, Edge, and Safari let you install InstaCalc to your home screen or apps folder. Look for the install button in the address bar.

iOS: Safari → Share → Add to Home Screen.

When things get weird

Cached versions sometimes go stale after an update. A hard reload (⌘R / Ctrl+R) clears it.