Clamp Pro
Contractor School Business iPhoneiPadiPod touch
Clamp Pro is a free Business app for iPhone and iPad by Contractor School. Rated 4.8/5 from 5 ratings. Requires iOS 15.5. Updated October 17, 2026.
- Rating
- 4.8
- 5 ratings
- Price
- Free
- on the App Store
- Size
- 100 MB
- Age 4+
- Updated
- Oct 17
- 2026 · v2.0.0
Screenshots
About Clamp Pro
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/
Ratings & reviews
4.8
5 ratings
What’s new
Version 2.0.0 · Updated October 17, 2026
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
App privacy
The developer, Contractor School, reported these privacy practices to Apple.
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Identifiers: Device ID, User ID
- Usage Data: Product Interaction
- Purchases: Purchase History
- Financial Info: Other Financial Info
- Location: Precise Location, Coarse Location
- Contact Info: Physical Address, Email Address, Name, Phone Number
- User Content: Photos or Videos, Audio Data, Customer Support, Other User Content
Used for: Analytics, App Functionality
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Diagnostics: Crash Data
Used for: App Functionality
Alternatives to Clamp Pro
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ForwardSales - Sales App
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Clamp Pro | 4.8 / 5 (5 ratings) | Free | October 17, 2026 | |
| Easy Inspections | – | Free | Oct 21, 2026 | Compare |
| Adtaria KPIs | – | Free | Dec 10, 2025 | Compare |
| AI LMS: Lead Management CRM | – | Free | Oct 21, 2026 | Compare |
| Renolution | 5.0 / 5 (4) | Free | Oct 7, 2026 | Compare |
| FieldDeck: Invoice & Estimate | 5.0 / 5 (7) | Free | Oct 20, 2026 | Compare |
| ForwardSales - Sales App | – | Free | Oct 6, 2025 | Compare |
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