4D Sequencer plays your Primavera P6 or Microsoft Project schedule on the IFC model, finds impossible sequences, runs 12 schedule quality checks and exports PowerPoint, Excel and video reports.
Windows 10 and 11 · 7-day free trial · no account needed

Open an IFC model and a schedule. 4D Sequencer links the model elements to the activities automatically.
Reads the model to find work that starts before the element it stands on, sits in or hangs from is finished: columns before the slab under them, doors before the wall around them, ceilings before the slab above. Each finding is shown on the model.

12 standard quality checks: missing links, negative and positive lags, Start-to-Finish links, hard constraints, high and negative float, long durations, invalid dates and out-of-sequence progress. Export them as numbered review comments in Excel, ready to send back to the contractor.

Watch the project being built with the Gantt chart moving in step. Works with Primavera P6 (XER and XML), Microsoft Project XML, Excel and CSV schedules.

Baseline against actual, with late work in red and early work in green, or both side by side in split view.

Load an earlier revision or update and see what slipped, what improved, what was added or deleted, and which links changed.

PowerPoint, Excel, an interactive web report and an MP4 video of the sequence.
Budget, spent to date and forecast at completion from Primavera P6 resource costs.
No account, no sign-in, no tracking. Everything runs on your computer and works offline.
Download free from the Microsoft Store and try everything for 7 days. Then choose a licence. One payment, no subscription.
Prices include tax where it applies. Secure payment by Polar. Your licence key is emailed to you within 24 hours.
Already have a 1 year licence? Upgrade to permanent and pay only the difference: email us.
No account to create. Your key is yours.
Install from the Microsoft Store. The 7-day trial starts when you first open it.
Click Buy here or inside the app. Enter the name to show on the licence: yours or your company's.
Your licence key arrives by email within 24 hours.
In 4D Sequencer, click "Enter licence key", paste the key and press Activate. No internet needed.
Anything else? Email rawifystudio@gmail.com
Models in IFC format. Schedules from Primavera P6 (XER or XML), Microsoft Project (XML), Excel or CSV.
No. 4D Sequencer runs on your computer and does not upload your files anywhere. Activation also works offline.
Windows 10 or 11 (64-bit) with Microsoft Edge, which is part of Windows, or Google Chrome.
Yes. At checkout, tick "I'm purchasing as a business" to add your company details. Your receipt and invoice can be downloaded from the customer portal at any time.
Yes, within 14 days of purchase if your licence key does not work and we cannot fix it. See the terms and refund policy.