Clamp Pro
Home Contractor Workflow
Only for iPhone
Free · In‑App Purchases
iPhone
The whole job in one app: AI estimates, proposals, contracts, change orders and invoices, a customer portal with e-signing, and mileage and time on site tracked for you.
Clamp runs the whole job from your phone: the estimate, the proposal, the contract, change orders and the final invoice, with a customer portal for e-signing and your mileage and time on site tracked for you.
Built for residential contractors who quote, run and invoice the job, often in the same day.
ONE WORKFLOW, FIRST CALL TO FINAL INVOICE
- Five documents, each built from the one before it: design agreement, estimate, proposal, change order, invoice
- Change orders update the signed contract, so verbal changes stop costing you
- Payment schedules: a deposit, milestones and a final payment, each invoiced from the contract
- Sales tax at the rate you enter, plus customer credits and refunds
- Every status in one place: sent, signed, invoiced, outstanding, paid
- Punch lists that close the job out, shared by text or PDF
DESCRIBE THE JOB. GET AN ESTIMATE.
- Type the job the way you would say it out loud and get an itemized, priced draft back
- Remodels and new homes: one estimator detects which you described
- Every line broken out by trade, with assemblies, quantities, rates and labor hours you can inspect
- Revise the draft with a follow-up prompt, then save your own rates and templates
CUSTOMER PORTAL AND E-SIGNING (ASSISTANT AND TEAMS)
- The homeowner opens a link and sees their job. No password, no app
- E-signing on their phone, with up to five signers per document
- Project updates, photos and decisions they answer from their phone
- Appointment reminders by email that customers can confirm
- Bounced emails flagged Not delivered so you can fix and resend
MILEAGE AND TIME ON SITE, TRACKED FOR YOU
- Drives detected by GPS in the background; you review each trip before it counts
- Time on site logged automatically when you arrive at and leave a saved job site
- IRS mileage rates applied, ready for tax time
KNOW WHAT THE JOB COST
- Receipts, purchase orders and vendor bills tied to the job that caused them
- Budget from the estimate against what you have spent, by labor, materials and subs
- An accountant export package at tax time
THE SCHEDULE (ASSISTANT AND TEAMS)
- Installs, deliveries, inspections and work days on each job in the Jobsites tab
- Custom schedule types and email reminders
- With Teams, crew and subs on the shared schedule: they confirm or propose dates and share photos
KNOW WHERE EVERYTHING STANDS
- A daily briefing of overdue invoices, follow-ups, appointments and open proposals
- Sales on Home: close rate, revenue won, open pipeline and why leads were lost
- Close rate by lead source, so you know which sources turn into work
- Five-factor lead scoring before you drive: a clear yes, no or maybe
WORK AS A TEAM (TEAMS)
- Up to 10 accounts on one business, each with their own sign-in and one of five roles
- Unlimited subs, free for them and never a seat
YOUR DATA
- Leads, documents, photos, mileage, time, receipts and job costing work offline
- AI estimates, the portal, e-signing, email, Teams, cloud backup and the web view need a connection
- No account needed to start
- Backup, restore, CSV export and bulk import
PLANS
Solo: the full job workflow, offline, with device backup and 3 free AI credits. Assistant adds the customer portal, e-signatures, the job schedule, cloud backup, email reminders, a read-only web view and 25 AI credits a month. Teams adds up to 10 accounts, the shared schedule, unlimited sub invites and 50 AI credits a month shared by the team. An estimate is 1 credit; a revision is half.
Try Solo monthly free for one month.
Terms of Use: https://clamppro.com/terms/
Privacy Policy: https://clamppro.com/privacy/
This app is also governed by Apple's standard End User License Agreement:
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Clamp 2.0 is a new app, rebuilt around the whole job.
- Design agreement, estimate, proposal, change order and invoice, each built from the last
- AI estimates for remodels and new homes, by trade
- Customer portal with e-signing. No password for the homeowner
- Mileage and time on site tracked automatically
- Job costing, payment schedules and sales tax
- The job schedule in Jobsites; with Teams, crew and subs too
- Close rate by lead source in the new Sales section
The developer, Contractor School, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Financial Info
- Location
- Contact Info
- User Content
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Proud Mary Management Company LLC
- Size
- 104.5 MB
- Category
- Business
- Compatibility
Requires iOS 15.5 or later.
- iPhone
Requires iOS 15.5 or later. - iPod touch
Requires iOS 15.5 or later.
- iPhone
- Location
- This app may use your location even when it isn’t open, which can decrease device battery life.
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Clamp Teams Annual $999.99
- Clamp Teams Monthly $99.99
- Clamp Assistant Annual $499.99
- Clamp Assistant Monthly $49.99
- Clamp Base Annual $149.99
- Clamp Monthly $19.99
- Unlimited Annual Access $59.99
- Monthly Access $9.99
- Copyright
- © 2026 Contractor School
