prereq is a canvas schedule builder for capital projects. Sketch the plan like a whiteboard, link what comes first, and get real dates, a critical path and a report management can read.
Every change is a sketch in Excel, an email, a re-key in P6 and a PDF to check. Then it starts again. With prereq the plan lives in one place, so there are fewer revisions with your scheduler.
Every date traced to what comes first.
These are real screens from the prereq app, not mock-ups.
Drop deliverables and activities where you’d put the sticky notes. Drag to arrange. Each box sits on its real dates, so the picture is the schedule.
Critical view on: the critical path in orange, work with float in blue.
Draw a link on the canvas, or type it in the Table, and every date downstream moves with it. The critical path shows itself in orange, and float tells you how much room the rest has.
Every task, duration, link and float in one sheet that works like a spreadsheet. Paste a block from Excel, fill down, and the canvas keeps up.
Scroll sideways for durations, links and float.
Send a status report management can read in a minute: forecast finish, critical work, and what moved. Export to Excel or PDF for everyone else.
The real app, on a sample engineering project.
Write one task per line with a duration like 3d or 2w, or upload a Word file laid out like our template. Pick a start date and prereq works out every start and finish.
prereq sits beside P6 and MS Project. The team plans in it; the scheduler gets cleaner input.
Plan the change yourself. Send a file, not a sketch.
Test a what-if on the canvas before anyone re-keys it.
See what moved and why, before the monthly report.
Forecast finish, critical work and slips, in one status report.
Build the look-ahead with real logic in minutes.
Sequence the work the way you’d draw it, with dates that hold up.
Get input from your team with the logic already in it.
And run the DCMA 14-point check on a P6 (.xer) or MS Project (.xml) file before it goes out.
Know which tasks are really driving the finish date.
A board memo and dashboard that read in a minute.
Bring your .mpp file and keep working.
An MS Project alternative that opens P6 files too.
Drop in a P6 or MS Project file. In seconds you get a score out of 100 against the DCMA 14-point check, and the problems to fix first.
Microsoft retired Project Online on 30 Sep 2026. Bring your .mpp or .xml file into prereq: tasks, links and dates come across, and the critical path is drawn for you. A P6 (.xer) export is in testing.
prereq is independent and not affiliated with Microsoft or Oracle. MS Project and Primavera P6 are their owners’ trademarks.“We’ve spent years watching good projects lose days waiting on schedule revisions. PMs sketch the change in Excel, send it to the scheduler, and wait. We built prereq so anyone on a capital project can plan and track the work themselves, with real dates and fewer revisions with their scheduler. We’re looking for a few PMs and project engineers to help shape it.”Dev Sivanesan and Jameil Smith, co-founders of
prereq is new. The pilot is how we get it right: a small group using it on real plans and telling us what’s broken.
50 seats · 3 months · for PMs, project engineers and schedulers
No. prereq sits beside Primavera P6 and MS Project. Project managers and engineers build and test the plan in prereq, then hand it to the scheduler, who carries on in the tool they know. A P6 (.xer) export is in the app but still in testing, so check the file in P6 before you rely on it.
MS Project files (.mpp and .xml), Primavera P6 files (.xer), and plans from Excel or Word, uploaded or pasted, with templates to start from. Activities, links, dates and the WBS come across. An .mpp goes through prereq’s converter, which turns it into XML and keeps nothing; prereq tells you before it sends one.
Yes. The check is free, with no account and no limit. Your email is only needed for the full PDF report.
The schedule check reads P6 (.xer) and MS Project (.xml) files in your browser, so they never leave your computer. An .mpp file has to be converted first, and that only happens after you say yes.
For the app, the pilot privacy note says what we keep and why. Questions go to info@prereq.ca.
An early adopter program: 50 seats for 3 months, for project managers, project engineers and schedulers. Every request is approved by hand. You get the full app, and your feedback goes straight to the founders.
Not yet, and we won’t pretend otherwise. The core is there: the canvas, critical path, Gantt, Table, reports and file import and export. The pilot is where the rough edges get found and fixed.
Bring a real plan to the pilot, or see how your current schedule scores in a minute.