TrueCap vs RentCast: rent estimates vs full underwriting
By TrueCap · built by a Philadelphia rental investor
RentCast is a property-data + rent-estimation platform — get rent comps, property value estimates, and API access. TrueCap uses reviewed inputs to model cash flow and returns. RentCast can supply inputs; TrueCap runs the analysis.
Free analyzer: no card or signup
TL;DR
Use TrueCap when
- You want a full underwriting analysis with cap rate, DSCR, and cash flow.
- You want financing math baked in (PITI, amortization, DSCR ratios).
- You want a portfolio rollup across saved deals.
- You want cap rate, DSCR, and cash flow free on every analysis.
Use RentCast when
- You want rent comps drawn from nearby rental listings.
- You need API access to integrate rent data into your own software.
- You want automated property value estimates (AVM).
- You're building a tool and need a data feed, not a UI.
Feature-by-feature
Side-by-side on every dimension that matters for a comparison-shopping investor.
| Feature | TrueCap | RentCast |
|---|---|---|
| Primary purpose | Per-deal underwriting calculator | Rent + property value estimation |
| Cap rate / CoC / DSCR analysis | Yes — full engine, free tier | Not among RentCast's listed features |
| 10-year projection | Pro — rent + expense + appreciation | Not among RentCast's listed features |
| Deal score (0–100) | Free — 0–100 score with factor breakdown | Not among RentCast's listed features |
| Rent comp data | An editable HUD rent benchmark; the comps lookup adds nearby rent comps and a rent estimate from third-party data | Yes: up to 20 nearby rental listings as comps (5 on the Free plan) |
| Property value estimate | You enter the price; the comps lookup adds a value estimate from third-party data (one free lookup with an account; included on Pro and Agent Pro, subject to monthly availability) | Yes: property value estimates (AVM) through its API |
| API access for developers | No | Yes: an API for property records, value estimates and rent estimates |
| Starting values (rent/rate/tax) | HUD rent + FRED rate + manual local property tax | Rent estimates and property data |
| Mortgage + financing math | Yes — full PITI + DSCR + amortization | Not among RentCast's listed features |
| Pricing (entry tier) | Free core; paid Pro — see live pricing | App: Free, or Pro at $19 a month ($12 a month billed annually). API: a free Developer plan, then $74, $199 or $449 a month (as of October 2026) |
| Free tier | Yes — core cap rate, CoC, DSCR, and cash flow | Free plan: rent estimates, 5 comps per report, 5 saved properties |
| Shareable read-only deal link | Free — read-only public link; Pro adds co-branding | Shares online rent reports; they carry rent data, not a deal analysis |
| PDF deal report | Included with Pro | Property rent report PDF; custom branding and market reports on Pro |
| Investor dashboard (saved deals) | Free — dashboard + save up to 5 deals; Pro adds unlimited saves + portfolio rollup | Rental portfolio dashboard: 5 properties on Free, 50+ on Pro |
RentCast plans, prices and features were checked against its pricing and API pages in October 2026. See rentcast.io/pricing and rentcast.io/api for current terms.
How TrueCap + RentCast fit together
- Get a tighter rent estimate in RentCast. Its estimate is for the specific property, from similar rentals listed nearby; the HUD benchmark TrueCap starts from covers an area.
- Plug that rent into TrueCap. Override the auto-filled HUD rent with RentCast's number. Everything downstream recalculates.
- Run the stabilized-rental underwrite in TrueCap. Cap rate, DSCR, cash flow, sensitivity, and a 10-year cash-flow and equity projection.
- Save the deal + revisit later. A saved deal can be re-run with updated assumptions when market data shifts; updating a saved deal needs a paid plan.
Want to turn those two estimates into a verdict? RentCast's rent and value figures are the only inputs the free 1% rule calculator needs; the full TrueCap analyzer takes it from there — cap rate, DSCR, and cash flow. Our guide on 60-second underwriting walks through the workflow end-to-end.
Common questions about TrueCap vs RentCast
Quick answers to the questions investors comparison-shopping these tools actually ask.
Is TrueCap a RentCast alternative?
Not directly — they overlap on rent estimates but TrueCap is full underwriting. RentCast provides listings-based rent comps and AVM-style property value estimates. TrueCap pre-fills an editable HUD rent benchmark and then runs the full underwrite. You can use RentCast as one evidence source and TrueCap for the downstream model.
How accurate is RentCast vs TrueCap's HUD-based rent estimate?
There is no universal accuracy winner. RentCast uses listings-based data, while HUD FMR is an area-level housing-program benchmark. Coverage and fit vary by property and market. Compare both with current subject-property comps or lease evidence and test a reasonable range.
Does RentCast do cap rate or DSCR calculations?
RentCast lists rent estimates, rental comps, market data, and an API; cap rate and DSCR calculators are not among its listed features. You'd use the rent number and AVM property value from RentCast as inputs into a separate calculator (TrueCap, DealCheck, or your spreadsheet) to compute cap rate, DSCR, cash flow, etc.
Which has a better free tier?
TrueCap provides no-account preliminary screens with cap rate, CoC, DSCR, NOI, and monthly cash flow. RentCast's Free plan is free forever and includes rent estimates, 5 comps per report, and 5 saved properties; its API is a separate product with its own free plan of 50 calls a month. They solve different jobs: use rent evidence for the assumption, then use an underwriting workflow to test the deal.
Can I use RentCast's data in TrueCap?
Yes — every input in TrueCap is editable. Pull rent from RentCast, type it into TrueCap's rent field, and the entire downstream analysis (cap rate, CoC, DSCR, cash flow) updates instantly.
On price, plainly
Tools in this space run from free to well above TrueCap — check RentCast's live pricing for their current number. What TrueCap's price buys is the decision layer, not more calculation: an Offer Ceiling for your targets, Buy Box fit with reasons, the downside stress test, and assumptions that are source-labeled instead of silently defaulted. Whether that workflow justifies the price depends on your volume, verification process, and existing tools.
Screening listings for investor clients? TrueCap for agents keeps a client roster and screens each deal against the Buy Box of the client you assign it to.
Underwrite the next deal — free.
TrueCap free covers cap rate, CoC, DSCR, and monthly cash flow. Your first complete decision also includes the Offer Ceiling. Pro adds 10-year cash-flow and equity projections, sensitivity, the Offer Ceiling, co-branded share links, and PDF reports; see live pricing for current terms. No card to start.
About TrueCap
TrueCap is built by one person, a rental investor in Philadelphia. It started as the tool he wanted for his own underwriting — a way to get from an address to a source-labeled first-pass answer — and it's still how he runs the deals he considers.