SquareZero

SquareZero helps you track habits, goals and simple checklists using a clean grid of squares, inspired by the contribution graphs you see on coding platforms. No account, no login and no internet connection required. Everything stays on your device. Create as many trackers as you need. Each tracker shows a clear progress counter in the format you choose: a fraction like 16/30, a percentage like 53% or a visual progress bar. Two tracker types cover most use cases. Calendar trackers turn a date range into a grid where each square represents one day. Set a start and end date or a start date plus a number of days, then tap a square to mark that day done or not done. You can also filter the grid to a shorter sub range when you want to focus on a specific stretch of time. Perfect for daily habits, streaks and challenges. Counter trackers turn a fixed list of items into a numbered grid, with no dates involved. Set a total count when you create the tracker, for example 21 for a video course or 12 for a book's chapters, then tap each square to mark that item done. Ideal for playlists, courses, book chapters or any sequential list you want to work through. Every tracker gets its own accent color, chosen from a curated set of vivid swatches, used to color completed squares throughout the app. Delete a tracker any time from the home screen or from its detail view. A confirmation step protects you from deleting by accident. The home screen lists all your trackers with a mini preview of their progress. Open any tracker to see its full grid, rename it, change its color, switch its progress display or delete it. SquareZero supports light mode, dark mode and following your system setting. Privacy comes first. SquareZero collects no personal data, includes no analytics or third party tracking and needs no network connection to function. There are no ads. Everything you create lives only on your device and it stays that way unless you delete the app. Whether you are building a daily habit, working through a course or checking off chapters in a book, SquareZero gives you a simple visual way to see your progress at a glance.