Receipt of record for jobsite commitments
The crane crew, the rebar supplier, and the rodbusters all said yes — in writing.
CrewAck is how a GC pins down a delivery, lift, or pour and gets every trade to acknowledge it — viewed, confirmed, declined, or commented. Every response lands in a timestamped log you can export. The log is the product.
Email-first No app to install. Subs just tap a link — no account, ever.
Cross-company coordination
The supplier, the rodbusters, and the crane crew are three different companies that will never share one login. CrewAck coordinates across all of them — that's the part a seat-based scheduler structurally can't do.
Account-free for subs
Subs never register and never get a password. The GC adds a contact, the sub taps an email magic link, and the whole experience is one mobile web page that loads fast on bad jobsite signal.
Timestamped receipt log
Every open, confirm, decline, and comment is written to an append-only audit log — with the time and the address it was bound to. Export the whole trail to PDF or CSV when a delivery slips and someone asks who knew what, when.
Not another scheduler
Procore, Buildertrend, and the rest already own the schedule. We're not trying to out-feature them. CrewAck is closer to DocuSign for jobsite commitments than to a calendar: one event, the right trades, and a defensible receipt that they acknowledged it. Read receipts are table stakes — coordinating across companies with no accounts, and handing you the trail as the deliverable, is the wedge.