Construction Gantt Chart App — Drag & Drop Schedule

Gantt Chart

The core screen — task list on the left, colour-coded timeline bars on the right, synced scroll and a date ruler on top. A visual schedule built for the jobsite.

Drag & dropAuto-cascadeSub-tasks 5 levels deepSkips weekends & holidays

What it does

Unlimited tasks, sub-tasks nested up to 5 levels — indent and guide lines show the hierarchy, each row folds and expands.
Parent tasks auto-summarise their children's dates (or override manually), and roll up status: any child late turns the parent late; all done marks it done.
Create a linked task and turn on “auto-follow” — move one task and the whole chain reschedules itself, with cycle protection and connector lines drawn.
Schedules by working days, automatically skipping weekends and public holidays (both customisable per project).
Rich task fields: name, duration, start/end, status, trade, contact, colour (30 shades), parent, predecessor, follow toggle, add-to-todo toggle.
Save any project as a template (or build one) and apply it to new jobs — tasks auto-schedule from the start date. Templates stay on-device and use no quota.

How to use

1Tap a task to select it, tap again to open its edit page.
2The selected row expands into six quick buttons: drag handle, add sub-task, duration stepper (the whole chain re-plans), status, camera, and create a linked task.
3Long-press and drag to reorder, or drop a task under another to make it a sub-task (it inherits the parent colour).
4Cycle the status: Not started → In progress → Done (confetti + praise) → Overdue (bar turns red).
5Zoom the chart and switch the time scale between Day / Week / Month. Undo and redo up to 50 steps.

Gantt Chart

Gantt Chart, in a two-minute walkthrough.

Explore the rest of the app.

Try Gantt Chart yourself.