A DealCheck alternative for screening deals on Zillow
DealCheck is one of the most established property analysis platforms: a web and mobile app where you build a full analysis per property, import comps and data, and model rentals, flips, BRRRR deals and multi-family. If you are deep-underwriting a deal you are serious about, it is a strong tool.
Mortar solves a different moment in the same workflow: the first pass. Instead of leaving Zillow and entering a property into a separate app, Mortar reads the listing you already have open and returns cap rate, cash flow, cash-on-cash and a verdict in about ten seconds, with real per-state property tax and insurance in the math. Screen twenty listings with Mortar, then take the two survivors somewhere deeper.
Side by side
| Mortar | DealCheck | |
|---|---|---|
| Where you analyze | In a popup on the Zillow listing you already have open | In the DealCheck web or mobile app, per property |
| Data entry | Read automatically from the listing page | Import or enter each property's numbers |
| Math transparency | Deterministic formulas, shown line by line | Detailed reports; deeper models to configure |
| Local taxes & insurance | Real per-state property tax + insurance applied automatically | Per-property inputs you provide or import |
| Free usage | 5 free analyses a month, no credit card | Free tier with limits; paid plans unlock more |
| Best for | Screening many Zillow listings fast | Deep-underwriting a shortlisted deal |
Comparison checked July 2026, based on public information. We are not affiliated with DealCheck, and features change; verify against their site.
What DealCheck does well
- Full underwriting depth: comps, after-repair value, long-term projections and reports
- Covers many strategies, including flips, BRRRR and multi-family or commercial
- Polished mobile apps, useful in the field
- A real free tier to try the platform
Pricing compared
DealCheck offers a free tier and paid subscriptions that unlock more analyses, comps and reporting; see dealcheck.io for current plans. Mortar is free for 5 analyses a month, and Pro is $29 a month for unlimited analyses, buy-box scoring and deal history.
The honest framing: these tools are complements more than substitutes. Plenty of investors screen with an on-listing extension and underwrite the survivors in a platform like DealCheck.
Which should you pick?
Pick DealCheck when you are past screening and need comps, projections and lender-ready reports on a specific deal. Pick Mortar when the bottleneck is triaging listings fast without a spreadsheet, with numbers you can check.
Try Mortar on a real listing
Free to start, no credit card. Or run the numbers by hand with the free rental property calculator.
Related reading: The best Zillow Chrome extensions for real estate investors