1 ClampBest for one to ten person residential crews running the job from a phone
- Price
- Solo $19.99 a month or $149.99 a year ($12.50 a month billed annually). Assistant $49.99 or $499.99. Teams $99.99 a month or $999.99 a year for up to 10 accounts. Solo is free for the first month on monthly billing.
- Team
- One account on Solo and Assistant; up to 10 on Teams, plus unlimited free sub invites who never see your prices.
Where it is stronger
- The whole residential job in one record, first call to final invoice: lead score, design agreement, estimate at direct cost with your markup applied once, proposal, change orders, invoices and payment schedule.
- Change orders, job costing, receipts, vendor bills and punch lists on every plan, including Solo.
- Mileage and time on site detected automatically and costed to the job, on every plan.
- A customer portal where customers sign, see invoices, photos, the schedule and decisions, with e-signatures and email reminders, from Assistant at $41.67 a month billed annually.
- AI estimates from a plain-language description: 3 free credits in the app, 25 a month on Assistant and 50 on Teams, and one free AI estimate on the website.

Change order, priced

Job cost, live
Clamp on a phone: a change order with its effect on the job total, and the job cost card with estimate against actual. Sample data.

Milestones in the portal

Invoice schedule
What the customer sees in the portal: milestones and the invoice schedule. Sample data.
Where it falls short for a small residential contractor
- No Gantt chart and no plan takeoff; the shared schedule is whole days, on Teams.
- No selections showroom with allowances; decisions are recorded in the portal.
- Not accounting software: no general ledger, payroll, bank feeds or tax filing, and no QuickBooks sync; an accountant export instead.
- Clamp does not process payments; you add your own payment link and record what was paid.