Need Help on a Bid or Billing Question?
Email our team directly with your device type (iPhone, iPad, or Android) and trade. Real product engineers read every message — no chatbot runaround.
Email support@chalklineapp.comContractor Support & Field Guide
Manage or Restore Solo Pro
Switched phones? Open Chalkline > Settings > Restore Purchases while signed into the same Apple ID or Google Play account.
Manage billing directly in Apple Subscriptions or Google Play Subscriptions.
Frequently Asked Jobsite Questions
How do I fix a measurement when trees or roof overhangs hide a driveway edge?
Drop your rough polygon corners on the satellite map first, then tap the dimension pill on the obscured edge (or open Trade, Spec & Zones and tap the edge chip such as
E2: 24.1 ft). Enter your physical laser, wheel, or tape measurement and check Sync opposite parallel edge if measuring a rectangular slab or driveway. Chalkline recalculates net area and material quantities instantly and marks calibrated edges with a ✓ on your PDF.
What works offline when a rural jobsite has zero cell bars?
Satellite map imagery requires an internet connection while panning to a new property. Everything else runs 100% offline on your device: all 6 Manual L × W trade calculators, saved contractor unit prices, project & quote storage, client finger signatures, and native PDF proposal/invoice generation. Active Solo Pro subscribers also retain offline access via Chalkline's on-device entitlement cache.
How do I subtract a swimming pool, garage pad, or landscape island?
Open the Trade, Spec & Zones drawer on the Takeoff Workspace and tap Cutout. Drop corner pins around the excluded area — Chalkline highlights cutouts in red and automatically subtracts their area from your concrete, gravel, asphalt, mulch, or sod quantities.
How do I convert an accepted Proposal into an Invoice or capture a client signature?
In the Quote Builder, hand your phone or tablet to the homeowner to sign inside the Client Acceptance signature pad — their signature, printed name, and timestamp stamp directly onto the PDF (and automatically clear if line items or totals are later edited). Toggle the document mode from Proposal to Invoice in one tap to issue a numbered invoice (
INV-1001) with your 0%-interest deposit and completion schedule.
Why does my UK or Australian invoice say "INVOICE" instead of "VAT INVOICE" or "TAX INVOICE"?
Under Australian (ATO) and UK (HMRC) rules, only businesses with a valid tax registration may issue a statutory
TAX INVOICE or VAT INVOICE. Open Settings > Contractor Branding & Licensing and enter your 11-digit Australian ABN or UK VAT Registration Number — Chalkline will then render the statutory tax invoice header automatically.
What happens to my saved quotes and PDFs if I cancel Solo Pro?
Zero Data Lock-In: Every proposal and invoice you saved stays permanently viewable and re-shareable as a PDF on your device in Read-Only Archive mode, even after a subscription or 7-Day Pass ends. All 6 manual
L × W calculators also remain 100% free forever. Because Chalkline stores your projects locally on your phone (with no cloud account), remember to export/back up important PDFs before resetting or trading in your device.