FlipBit

A task is a bit.

Zero or one. That’s the whole model. FlipBit is a to-do app for people who want the list to stay a list.

tap a bit.

Download on the App Store

iOS · Free · No account · Works offline

The week view: seven day rows stacked, each one darker than the row above, with each day's bits shown on the right.
the week, seven registers
A day open with its task list, each task carrying its own bit, and the day's readout below.
a day, open
The home screen showing the medium Day widget and the large Week widget.
flip from the home screen
The records sheet: the week's raw stored data as read-only JSON.
the raw records

What it does

The bit is the checkbox

Tap the digit. It goes 0 to 1. There is no second state to learn.

A day is a register

Every task in a day, in a row, readable at a glance as one number.

BIN · OCT · HEX

Tap the readout to reread the same day in another base.

Flip from the home screen

Day and Week widgets. Check things off without opening the app.

Your data, on your phone

SQLite on device. No account, no server, no analytics.

Read the raw records

Long-press the header for the week exactly as it's stored. Nothing is hidden.

What it doesn’t do.

The list below is the design. Each one was left out on purpose.

  • no projects
  • no tags
  • no priorities
  • no due dates
  • no streaks
  • no nagging notifications
  • no red "overdue"
  • no account
  • no sync
  • no server
  • no tracking