Cubic Yards, Bags & Short-Load Guard
Exact yd³ and m³ slab volume with configurable depth, waste %, 80-lb / 20-kg bag equivalents, and automatic < 4 yd³ ready-mix short-load penalty alerts.
iOS • iPadOS • Android • Zero Login Required
Measure the Site.
Measure the Site.
Get Signed in the Driveway.
Built for flatwork, gravel, asphalt, fencing, landscaping, and winter crews. Drop corner pins on satellite imagery — or calculate manual L × W 100% offline — then hand your customer a clean, branded PDF proposal or invoice with on-screen signature before leaving the jobsite.
✓ Zero Login Wall
✓ Free Manual Calculators Forever
✓ Past Quotes Readable Offline Forever
✓ 0% Interest Milestone Schedules
Deterministic Field Physics
Six Outdoor Trade Engines. Zero Guesswork.
Compacted Tonnage (#57 / Granular A / MOT)
Converts loose vs. compacted depth into exact US tons or metric tonnes across #57 crushed stone, Canadian Granular A, UK MOT Type 1, and Australian 20mm roadbase.
Lift Tonnage & Tack Coat
Computes compacted asphalt tonnage (145 lb/ft³ / 2,322 kg/m³), compaction allowance, and tack coat gallons or liters for driveways and parking pads.
Yards, Bags, Pallets & Staples
Switches seamlessly between bulk cubic yards, 2-ft³ / 50L retail bags, topsoil settling %, palletized turf rolls, and erosion-control straw blankets with fixing pins.
Posts, Bays, Gates & Footings
Open-polyline perimeter takeoff calculating terminal & line posts, fence bays/panels, gate opening deductions, and post-hole concrete bags.
Seasonal De-Icing & Drum Coverage
Models per-storm rock salt application rates (lb/1k ft² or g/m²), full-season bulk tonnage, and 1- or 2-coat asphalt sealer gallons & 55-gal drums.
Jobsite Ergonomics & Closing Power
Designed for Bright Sun, Work Gloves & Weak Signal
Beat Tree Canopy & Roof Overhangs
Satellite view blocked by an oak tree? Tap any polygon edge, enter your laser or wheel measurement, and optionally sync the opposite parallel edge. Subtract pools, garages, and islands with multi-zone cutouts.
Close at the Kitchen Table
Embed a clean north-up aerial site diagram, your company logo, saved unit rates, and client finger signature onto a crisp Letter or A4 PDF. Flip any quote into a regional Invoice (US Sales Tax, CA GST/HST, UK VAT, AU ABN Tax Invoice) in one tap.
Transparent Pricing • Zero Lock-In
Pays for an Entire Year on a Single Driveway Bid
Field Calculator & Starter
$0
No account • No credit card required
- All 6 manual L × W trade calculators free forever
- 1 full satellite property takeoff project
- 1 unwatermarked customer PDF quote/invoice (up to 3 revisions for that job)
- Permanent offline read-only access to saved PDFs
Chalkline Solo Pro
$99.99/yr
7-day free trial for new subscribers • or $19.99/mo
- Unlimited satellite property takeoffs & multi-zone cutouts
- Unlimited branded PDF proposals & statutory invoices
- On-screen client signature & saved unit-rate price book
- Custom company logo + License / GST / HST / VAT / ABN header
- Offline Pro entitlement caching for zero-bar rural sites
7-Day Single Project Pass
$9.99
7 days full access • Never auto-renews
- Built for homeowners planning one weekend patio, fence, or mulch job
- Full Solo Pro satellite takeoff & PDF export for 7 days
- Zero recurring billing — expires automatically after 7 days
- Saved PDFs remain viewable on your phone forever
Prices shown in USD; exact localized pricing and introductory trial eligibility are displayed in the app by the Apple App Store or Google Play Store prior to purchase. Auto-renewable subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Review full Terms of Use (EULA) and Privacy Policy.