Clamp — From first call to final invoice. One app that clamps your business together. Built for residential contractor workflow, Solo to Teams.
Track leads, mileage, receipts, photos, and time on site
5 documents, signed on the homeowner's phone
Push notifications for follow-ups & appointments
Mobile-native
Works offline
No account needed to start
Pricing

Pick the plan that sounds like you, your customers, and your team.

One app, three plans. Higher plans replace lower ones; you hold one plan at a time and you're never billed for both.

Subscribe in the app — billed by Apple or Google. Cancel anytime.
How it works

One smart workflow. No re-typing.

Clamp gives you a document for each stage of your project. The lead carries into the design agreement. The estimate carries into the proposal. The change order carries into the invoice. You build it all once, in the same app.

Smith Kitchen Remodel
6 activities · all Clamped
DA
Design Agreement
$1,200
Signed
ES
Estimate
$24,000
Approved
PR
Proposal
$24,000
Signed
CO
Change Order #1
+$2,400 → $26,400
Sent
IN
Invoice — Deposit
$13,200 (50%)
Paid
IN
Invoice — Final
$13,200
Draft
1

First Call

Phone rings. You log the lead in 30 seconds — name, project type, source, follow-up date. Every call becomes a tracked lead. Not a sticky note that disappears.

2

Design Agreement

Send a paid scope-of-work agreement before you spec a single cabinet. Stop doing $400 of free design work for tire-kickers. If they sign, you've built trust. If they don't, you saved your Saturday.

3

Estimate

Build the estimate on your phone. Pick from pre-built assemblies. Set allowances and exclusions. Done before you leave the driveway — not the next weekend.

4

Proposal

Convert the estimate to a branded proposal with payment schedule, scope, and exclusions in plain language. Homeowner signs on their phone. No more 2008-era Word docs.

5

Change Order

Bigger vanity? Extra outlet? Upgraded faucet? Log the change order on the spot. Capture and bill it on the same screen. Stop leaving $300–$3,000 per job on the table.

6

Invoice

Generate invoices from milestones. Send a payment link. Get paid same-day on a phone — not three weeks later, not after two follow-up calls.

What it replaces

One app. Eight tools you no longer need.

Notes app. Random photos. Paper estimates. The spreadsheet you started in 2021. That's the solo version. The company version costs more: DocuSign for signatures, CompanyCam for photos, a timesheet app for the crew. Whether it's just you or a crew of ten, Clamp replaces all of it, from $12.50/mo on annual.

Clamp
Lead to invoice. One app.
$12.50/mo on annual
✓ One app
Jobber
Field service mgmt
$39–$349/mo
✕ Replaced
Housecall Pro
Field service mgmt
$59–$189/mo
✕ Replaced
Joist
Estimates & invoices
$10–$32/mo
✕ Replaced
Invoice Simple
Capped invoicing
$7–$17/mo
✕ Replaced
MileIQ
Mileage tracking
$12–$14/mo
✕ Replaced
DocuSign
E-signatures
$10–$25/mo
✕ Replaced
CompanyCam
Jobsite photos
$24–$36/mo
✕ Replaced
QuickBooks Time
Time tracking
$20+/mo
✕ Replaced

Clamp price shown on annual billing. Monthly $19.99.

Feature Clamp Typical app
Lead tracking ✓Turn every call into a tracked lead ✕Not in invoice apps
Design agreements ✓Charge for estimates ✕Not available anywhere
Estimates ✓Mobile-native estimate builder ~Yes in most
Branded proposals ✓Your logo, signable on phone ~Often paywalled
Change orders ✓Capture & bill on the spot ✕Joist Elite tier only
Invoices with payment links ✓Unlimited, no caps ~Often capped or extra
Auto GPS mileage tracking ✓Built in, linked to jobs ✕Separate app required
Auto time on site tracking ✓Logged automatically per job ✕Manual timer or none
Receipt capture ✓Snap, tag to job, export ✕Separate app required
Project photos ✓Attached to leads & jobs ~Separate $24+/mo app like CompanyCam
Works fully offline ✓100% local storage ✕Most require cloud
No account to start ✓Local-first — account only for cloud features ✕Account required by all
E-signatures ✓Signed on the homeowner's phone ✕Separate tool or top tier
Customer portal ✓Branded to your business ✕Rare below team plans
AI estimate drafts ✓Speak the job, review the draft ✕Not available in most
Cloud backup + web view ✓Optional — restore is never paywalled ✕Cloud required; cancel = locked out
Team seats ✓Up to 10 on one subscription ✕Per-user fees
Built for solos ✓Solo-first — grows to a crew of 10 ✕Team-shaped or stripped down
Your stack today
$60–$120/mo
Five to eight apps, just you
$200+/mo
With a crew, per-user fees
With Clamp
$12.50/mo
One app, everything above
$83.33/mo
Whole crew of 10, on Teams
Annual billing. Monthly plans available. Save up to $1,200/yr
Clamp Assistant

The Assistant does the office work.

A one-person business has never been able to afford an office. Assistant is the upgrade for contractors who want the work done, not just organized.

Estimates

Speak the job, get the draft.

Describe the scope in the driveway. Your Assistant drafts the line items, quantities, and prices from real assemblies — you review and approve. 50 drafts a month.

Signatures

Documents that chase themselves.

Send proposals, change orders, and agreements for e-signature. Homeowners sign on their phone — no app, no account, no printing.

Portal

Every customer gets a portal.

Proposals, invoices, and job photos in one place, branded to your business — not ours.

Backup

Your business, backed up.

Automatic cloud backup of your whole business. New phone? Sign in and restore. And see everything from any browser in the Clamp web view.

Clamp Teams

When it's not just you anymore.

Clamp is built for one person first. Teams is for the day you put a second phone on the payroll — without handing anyone your login.

  • Up to 10 people on one subscription — everyone gets their own sign-in
  • Their hours, mileage, and receipts land on your jobs, attributed to them
  • You decide what each person sees — a viewer for the bookkeeper, a contributor for the new guy
  • Link outside subs to a jobsite free — photos and updates flow in, and they never take a seat

Everything in Assistant is included — 100 AI estimate drafts a month, shared across the team.

The reality

The thoughts you're having at 7am.

Solo contractors don't lose jobs because they're bad at the work. They lose them because the paperwork around the work is falling apart. Here's what's actually on your mind — and how Clamp answers it.

7:04 AM

"I'm drowning in leads. I can't keep track of who I quoted, who I followed up with, or who ghosted me."

What you're thinking

in the truck, before the first coffee

Clamp answers:
Every call becomes a tracked lead with project type, source, follow-up date, and notes. You see your whole pipeline in one screen, sorted by what needs attention today.
12:32 PM

"I need to get this estimate out today. The homeowner's going to ghost if I take another week."

What you're thinking

eating lunch in the truck after a walkthrough

Clamp answers:
Build the estimate on your phone before you leave the driveway. Pick assemblies from the library, set allowances, add line items. Send the proposal the same day.
2:18 PM

"I don't want to miss scope. Last job I forgot to bill the demo and ate $1,200."

What you're thinking

walking a job with a clipboard

Clamp answers:
Assemblies bundle all the included scope so you stop forgetting line items. Allowances flag what's not included. Exclusions are clear from day one.
4:47 PM

"I don't want the homeowner arguing about price at the end. I want them to know what they're getting before they sign."

What you're thinking

drafting a proposal at the kitchen table

Clamp answers:
Proposals show included scope, exclusions, and allowances in plain language. Homeowner signs on their phone. No surprises at the final invoice.
6:21 PM

"I need this proposal to look professional. The bigger guy down the road has branded PDFs and I'm sending a Word doc."

What you're thinking

comparing yourself to a competitor's quote

Clamp answers:
Branded proposals with your logo, payment schedule, scope, terms, and signature line. Sent as a clean PDF link. You look like the pro you are.
9:13 PM

"I can't spend four hours estimating every kitchen. Half of them ghost me anyway."

What you're thinking

at the desk after dinner, dreading the evening

Clamp answers:
Pre-built assemblies for common scopes mean the estimate is 80% done before you start typing. Voice-to-estimate is coming. Get the proposal out in 20 minutes, not four hours.

One app. From the first call to the final invoice.

Built for the solo contractor who's tired of stitching four apps together. Try it free.

Download on theApp Store Get it onGoogle Play
Free tools & research

Published numbers, not opinions.

A free estimate generator and contractor pricing research built on a fully itemized, published job. Every figure traces to data you can open.

Free tool AI construction estimate generator Describe a job in plain words, get an itemized direct-cost draft with assemblies, quantities, and researched rates. Published estimate 5x8 bathroom remodel, fully itemized 51 line items totaling $19,867.38 in direct job cost, with the complete data files behind it. Guide Markup vs margin Why a 50% markup is a 33.3% margin, worked on the published bathroom, with the conversion table. Guide The 21 overhead categories What belongs in overhead, what belongs in job cost, and what inconsistent classification costs per job. Worked model What a solo contractor charges to make $100,000 Eight projects, a line-by-line overhead budget, and the 1.70 multiplier that falls out of it. Worked model The hourly rate that supports $100,000 Only 1,332 of 2,080 hours are billable, and materials sold at cost pay for nothing. The rate is $132.80. Worked model Where non-billable time gets paid for Recover it from overhead or in the rate: $51.78 with a 2.56 multiplier, or $80.85 with 1.64. Both land on the same $132.80. Worked model What you have to sell before the business profits $231,726.63, or 1,169 of 1,332 billable hours. The profit is the last 12.23%, and break-even is not where you start earning. Worked model Comparing estimated hours with actual job hours A $6,000 labor price estimated at 100 hours and taking 125 yielded $48.00 an hour, not $60.00. What that does and does not tell you. Worked model What a contractor's mileage is worth in 2026 Two rates this year: 72.5 cents through June, 76 cents from July. A year-end total cannot be priced. Guide The 4 stages of a remodeling business Jobs, job sizes, leads, pay, and overhead at each revenue stage, from solo operator to structured company. Methodology How Clamp estimates are built Where the assemblies and baseline rates come from, and what the numbers do and do not include.
FAQ

Things contractors always ask.

How is Clamp different from Jobber or Housecall Pro?+
They're built for shops with dispatchers and field crews, start at $39–$59/mo, and push you toward a desktop workflow. Clamp is built for the person who runs the whole business from their truck — and when you hire, Teams covers a real crew of up to 10 without changing what the app is.
Do I need to create an account?+
Not to run your business. Leads, estimates, invoices, mileage — all local, all offline, no account. You create one (email + a 6-digit code, no password) only when you subscribe or use a feature that needs our servers: AI estimate drafts, e-signatures, the customer portal, cloud backup, or Teams.
Does it work offline?+
The core app, yes — basements, rural lots, zero bars. Features that involve other people or servers (sending for signature, AI drafts, backup) need a connection when you use them.
What happens to my data if I stop paying?+
It stays on your phone — stopping payment never locks you out of your own history. And if you had cloud backup, restoring it to a new device still works even with a lapsed subscription. Your data is never held hostage.
What exactly are the five documents?+
Design Agreement — paid scope-of-work agreement before you spec a project. Estimate — your internal numbers, built from assemblies. Proposal — branded, signable, with the payment schedule. Change Order — capture and bill scope changes mid-job. Invoice — milestone or final, with payment links.
How do team seats work?+
One Teams subscription covers up to 10 people. Each person gets their own sign-in — no sharing your login. Their invitation is free to accept; there's nothing for them to buy. Outside subs link to a jobsite free and never count as a seat.
What does the customer portal do?+
Your customer opens a link and sees their job. No account, no password, no app to install. They can view the documents and photos you share, and sign what needs signing on their own phone. You choose what goes in, per job. Included with Assistant and Teams.
Where do the estimate prices come from?+
Every assembly starts from a researched baseline rate, and you can see every line before you send anything. Once you set your own rates, yours take over and stay saved for the next job. AI drafting turns a plain description of the job into an itemized estimate you then edit. Three AI estimates are free on any account; Assistant adds 50 a month and Teams 100 a month, shared across the whole business.
Can I get my data out?+
Yes, anytime, on every plan. CSV export of your leads and jobs, PDF reports, an accountant export package, and full device backup with restore and bulk import. Assistant and Teams add cloud backup, and restoring from it keeps working even if your subscription lapses.
Does Clamp track what a job actually cost?+
Yes. Receipts, purchase orders, vendor bills, mileage, and time on site all attach to the job that caused them, so you can compare what you estimated against what you spent. It is in every plan, including Solo.