Learn six common scheduling tasks, then try them in the demo below. It uses the Ganttry app. No signup or install needed.
Click a cell and type — Enter commits and moves down, Tab moves right, and pasting a block from Excel lands cell-by-cell from the active cell, mapping columns across like Excel does. The fill handle drags "Area 01" into Area 02, Area 03… Press Ctrl+Z to undo an edit. You can undo up to 100 steps.
Predecessors read exactly like you learned them: 12, 12SS, 12FF, 12FS+3d, comma-separated. The Successors column mirrors automatically — type 14SS+2d in task 5's Successors cell, and task 14 gets predecessor 5SS+2d. Insert or delete rows and every reference renumbers itself, because links live on stable task identities underneath.
Four constraint types: SNET, MSO, FNLT and MFO. SNET, start no earlier than, is an earliest-start limit: the task can start later but never sooner. MSO, must start on, pins the start exactly. FNLT, finish no later than, moves nothing but shows negative float with a red warning when the finish lands late. MFO, must finish on, moves nothing but warns whenever the finish is not exactly on that date. There is also an independent deadline diamond and a full backward pass: Late Start, Late Finish, Total and Free Float. Negative float shows red everywhere — grid, Gantt, exports. Widen the critical threshold to catch near-critical work before it goes critical.
Snapshot the plan at award, keep up to five named baselines, and draw any of them as gray bars under the live schedule. Start Var and Finish Var columns use the MS Project sign convention — positive slipped red, negative ahead green — and rows that slip get a red row number.
One dialog sets the data date and records per-task actuals, with "on plan" shortcuts for the easy ones. Completed work anchors at its actual dates, in-progress work resumes no earlier than the data date with retained logic, and the whole round is one Ctrl+Z. The blue data-date line draws on the Gantt and in PDFs.
A one-click, 13-point schedule-quality audit adapted from the DCMA assessment: missing logic, leads, lags, hard constraints, high float, negative float, stale progress and more. Thresholds are editable and stored per project. Select a failed check to find the affected tasks. Then export a PDF report with your letterhead.
This is the real Ganttry build, running privately in your browser — nothing you do here is uploaded, and a refresh resets the sandbox.
On a phone the demo opens in Ganttry's mobile view — the same live sandbox, sized for the field. The editing tour above shines on a laptop; the mobile side is all yours to try:
Open the live demo →