Contribute portal — built for phones. Upload from site, straight from the camera roll.
The full project app — desktop and laptop. On a narrow screen it shows a notice instead of the page.
Which one you land on depends on how you arrived, not on who you are.
What works where
| On a phone | On a computer | |
|---|---|---|
| Uploading against the conditions assigned to you | Yes via the contribute portal | Yes |
| Leaving a note with your upload | Yes | Yes |
| Signing in with a code or an email link | Yes | Yes |
| Reading these support articles | Yes | Yes |
| The checklist, reviews, approvals, downloads, settings | No | Yes |
If you see the notice
Opening the main app on a narrow screen shows:
DocuBuild isn't available on mobile yet. We're built for the bigger screens your project documents need. Please open DocuBuild on a desktop or laptop computer.
Nothing has gone wrong, and you haven't lost access. The page underneath simply doesn't work at that width, and showing you a clear message is better than a broken layout. Open the same link on a computer and it behaves normally.
One quirk worth knowing: turning your phone sideways can get you through. Modern phones are wide enough in landscape to pass the check. That's allowed rather than intended — the app is genuinely hard to use at that size, so treat it as an emergency measure, not a workflow. A tablet in landscape is a much better experience.
Why not just make it responsive?
Because most of the app is dense tables — dozens of conditions with owners, dates, statuses and approval state across the row. Squeezing that onto a phone means either hiding most of the columns, in which case you can't do the work, or horizontal scrolling, which is worse than not offering it at all.
The part that genuinely belongs on a phone — a subcontractor standing in front of the thing they need to photograph — is exactly the part that is built for it.
For subcontractors: uploading from site
| 1 | Open the link from your email on your phone. It signs you in and takes you to your list. |
| 2 | You'll see only the conditions assigned to you, grouped the way the project team grouped them. |
| 3 | Tap one and add your file — from your camera roll, your files app, or by taking a photo there and then. |
| 4 | Add a note if there's anything the reviewer should know. The project team is notified once you're done. |
A condition disappearing from your list is good news. The portal shows what's still open for you. Once the project team resolves a condition, it drops off — it hasn't been lost, and you don't need to re-send anything.
Sending a link to someone on site
If you're a project manager, send people the contribute link rather than a link into the app — it's the surface that works on their phone. Sending an app link to a subcontractor standing in a plant room is the most common way this goes wrong.
And don't forward your own notification emails to get someone access: those links sign the recipient in as you. Add them to the project instead — see the four project roles.