Grainwork

Second opinion on repair costs

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Film any home repair and get an independent estimate in about a minute — then check your contractor's quote against it. No salesman, no leads sold. Just the number. Is your contractor's quote fair? Find out in about a minute. You just got a repair quote and you have no idea if it's reasonable. Too low and you worry about the work; too high and you're overpaying by thousands — and you have no neutral way to tell. Grainwork is that neutral read. Film the damage and we build an independent estimate from your footage; then enter the contractor's quote and we check it against that estimate, line by line. You'll see in about a minute: - A clear read on your quote — shown side by side with an independent estimate range, so you can see for yourself where it lands - An independent estimate built from your own photos or video - A line-by-line read on which items look inflated and exactly what to ask your contractor — unlock the full breakdown when you're ready to act We're on your side — and we mean it structurally. We take no money from contractors. We sell no leads. There's no "now hire someone" pitch after the verdict. Most "find a pro" apps are paid by the pros; ours isn't, so the number has no agenda. It's just the number. Works for any repair — roof, HVAC, plumbing, paint, drywall, siding, concrete, and more. Estimates are built against local repair-cost data and calibrated with real contractors, not contractor advertising. And it remembers. Every check becomes part of your home's record — a plain-English history of what's been looked at, in a calm voice, kept for you. Not a sales funnel. A record. Free to see your estimate and the verdict. Unlock the line-by-line audit when you want the full breakdown — getting three bids on one job? The audit 3-pack covers all of them. Grainwork provides an independent estimate for informational purposes. It is not a formal bid, appraisal, or guarantee of price. Always confirm with a licensed professional.

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The developer, Ryan Katzman, 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
    • Location
    • Contact Info
    • User Content
    • Identifiers

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • Ryan Katzman
Size
  • 50.3 MB
Category
  • Utilities
Compatibility
Requires iOS 15.1 or later.
  • iPhone
    Requires iOS 15.1 or later.
  • iPod touch
    Requires iOS 15.1 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
  • English
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © 2026 Grainwork
  • Developer Website
  • Privacy Policy