BNBCalc vs Rabbu 2026: Which One Do You Actually Need?

Why would you pay for BNBCalc when Rabbu runs the numbers on a deal for free? Well, we build BNBCalc, so I'm not neutral. Still, I'd pick it if you're investing beyond the US or you want to know why each comp behind an estimate made the cut.

BNBCalc Markets covers markets in 157 countries, and roughly four in five of them are outside the US. It also comes with the BNBCalc Calculator, which grades each comp and explains its rejects, then takes the address through the mortgage to your cash-on-cash return and cash flow.

Rabbu, meanwhile, is a free, US-only Airbnb marketplace with its own deal tools, and it makes its money when you do a deal. So it covers much of the same ground for nothing, from US market rankings to the comps behind an estimate, each with an include or exclude switch. Its return calculator handles a loan, where you set the loan amount, down payment, rate and term, and pick amortising or interest-only. Yet it all stops at the US border, which is the first reason I'd point you to BNBCalc.

BNBCalc vs Rabbu: The Short Version

If both tools rank markets, show you the comps behind an estimate and underwrite a deal with a loan, where do they split? The way I see it, it's where they work and how much they explain.

BNBCalc Markets covers roughly 2,400 markets in 157 countries, and the Calculator that comes with it grades each comp and explains its rejects. Rabbu only works inside the US. And when I went through its public pages in September 2026, none of them mentioned a grade for each comp or said why a given comp was left out.

The job	BNBCalc	Rabbu
Market research	Rank markets by annual revenue, or by gross yield in US markets, then narrow them down on occupancy, ADR, RevPAR and lead time, with six heatmaps on the map and 3+ years of history	A free Market Finder ranking US markets on ROI score, annual revenue, gross yield, occupancy and more
Listings	Every Airbnb and Vrbo listing in a market, filtered by bedrooms, performance tier, listing age or operator	A marketplace of homes for sale, 3,254 listings on 16 September 2026, some with financials the owner reported
Comps behind an estimate	Up to 50 comps, each graded with the photos read on both sides, rejects explained and a flag when the set leans high or low	Every comp listed with its ADR, occupancy and monthly revenue, an include or exclude switch and a quick-select for the 75th or 90th percentile
Property revenue	AI predictions with seasonality, from the comp source you pick	A free estimate for any US address, from same-bedroom comps within a mile by default, counting nightly rates only
Expenses	Up to about twenty cost lines filled in field by field, each with a confidence level and a reason	Nine lines you can edit, starting from defaults, with property management filled in at 0.00%
Financing	Purchase price, percent down, loan amount, mortgage length and rate, giving you the monthly payment	Loan or cash, down payment, loan amount, rate, term, and amortising or interest-only
Returns	Cap rate, cash-on-cash, cumulative cash flow, equity and principal pay-down, appreciation and US depreciation	Cap rate, gross yield, cash-on-cash and net cash flow with the loan, on a US address
Coverage	Roughly 2,400 markets in 157 countries, about four in five outside the US	The United States only, organised state by state
Price, as of September 2026	Calculator $30/mo or $199/yr; Markets $79/mo or $399/yr, including the full Calculator	Free, with no pricing page and no plans listed
How you try it	Two property analyses free, or a 7-day free trial with full access	No account needed at first, though its sign-up prompt can't be closed after the third time it shows up

From Market to Returns: What BNBCalc Actually Does

The BNBCalc column follows the seven steps in the order you'd take them: market, listings, comps, property, expenses, financing and returns. Markets handles the first three and the Calculator the last four. Since the same search bar sits on the Markets pages, typing a city there opens the market, and typing an address opens an analysis.

In Markets, you rank markets by annual revenue, or by gross yield if you're buying in the US. Then you narrow the list on occupancy, ADR, RevPAR and booking lead time. The map has six heatmaps, and every market comes with three-plus years of history.

Once a market's worth a closer look, you open its listings and filter them by bedrooms, performance tier, listing age or operator. The keepers become a comp set you can save, share or export as a 26-column CSV. Operator analysis, meanwhile, shows you who runs what before you decide you can beat them.

Then you type an address, and the Calculator models it four ways: as a short-term rental, an arbitrage play, a long-term lease or a cohosting deal. Each estimate rests on up to 50 comparable listings of its own. The running costs come in field by field, up to about twenty lines, each with a confidence level and a reason.

Once you've added the purchase price, percent down, loan amount, term and rate, the Calculator gives you the monthly payment. From there it shows your cap rate, cash-on-cash, cumulative cash flow, equity and principal pay-down, appreciation and US depreciation.

Keep in mind the two products don't hand data to each other, so no saved comp set gets pulled into an analysis.

What connects them is the account you log into and the search bar you type in.

BNBCalc Markets vs the BNBCalc Calculator: Which Plan You Need

Which plan do you need? If you're still choosing a city, I'd get BNBCalc Markets, and once you've chosen, the Calculator on its own will do. As of September 2026, the Calculator is $30 a month or $199 a year, and Markets is $79 a month or $399 a year. Markets includes the full Calculator, so that $79 covers picking the market and running the numbers on the house.

The BNBCalc Calculator, $30 a month or $199 a year: unlimited property analysis, AI revenue predictions with seasonality, professional PDF reports, a tax calculator with depreciation on US rules, expense and mortgage modeling, and ROI and cash-flow projections.

BNBCalc Markets, $79 a month or $399 a year: everything in the Calculator, plus every Airbnb and Vrbo listing in any market, custom comp sets, market rankings by annual revenue or by gross yield in US markets, and 3+ years of historical data.

Own the place already? Then I'd say the Calculator alone covers it, until you start asking which city to buy in next, which is Markets' job.

Where Rabbu Stops Short

And what if that next city isn't in the US? Unfortunately, Rabbu stops at the US border, and that's the cleanest line between the two tools.

When I checked on 16 September 2026, its calculator estimated revenue "for any address in the United States." I opened its Market Finder the same day, and it ranked about 3,565 US markets and none outside the country. If you're shopping in Mexico, Portugal or Canada, there's nothing on Rabbu to run the numbers with, whereas BNBCalc Markets covers 157 countries.

Inside the US, Rabbu does show you which comps it used, and I'll give it that, but for the why behind each one, I'd go with BNBCalc. I opened View/Edit Comparables on a for-sale listing, and every comp behind the estimate was there with its distance, ADR, occupancy and monthly revenue. Each one had an include or exclude switch, and there was a quick-select for the 75th or 90th percentile.

Its public pages stop short of the why for each comp, though. In September 2026, they said nothing about a grade for each comp, why a given comp was left out, or a flag for a set that leans high or low, while the Calculator gives you all three.

Every Calculator estimate rests on up to 50 comps you can open, and the model reads the photos on both sides. It grades every comp on product, bedroom count and amenity fit, explains the ones it rejects and flags whether the set leans high or low.

So if a comp looks wrong, you can read the model's reason before you overrule it.

Then there's what goes into Rabbu's revenue number. Its estimate counts nightly rates only, and its FAQ puts it plainly, "Our estimates only include income from nightly rates," with cleaning, pet and early-check-in fees left out. I can see why you'd call that the safer choice, but it also means two estimates can disagree just because they count different things, so whichever number you start from, I'd still run it through BNBCalc, where you can see why each comp made the cut.

Expenses are the part I'd check hardest, because that's where Rabbu's numbers can make a deal look better than it is. Its nine lines start from defaults you can edit, and the one I'd look at first, the property management fee, is filled in at 0.00%. Yet Rabbu's own tooltip on that field told me a manager takes 25% of revenue after channel fees, on average.

If you're hiring one, make sure to change that field before you read the cash-on-cash, because a quarter of your revenue is the difference between a business and an expensive hobby. And yes, I'd run the same check in BNBCalc. The Calculator suggests up to about twenty cost lines, each with a reason, but it doesn't estimate the management fee, so that one's yours to check in either tool.

Last, there's the date. Rabbu says its data refreshes weekly, though the three city market pages I opened on 16 September 2026 were all stamped 27 April 2026. So don't forget to read the stamp before you quote one.

Data Accuracy: What Each Estimate Rests On

And how accurate is Rabbu's estimate? I couldn't tell you, because it doesn't publish an accuracy percentage. Instead, its FAQ says accuracy "is largely down to execution and changing market conditions, both of which are impossible to predict." It also asks you to treat the estimate as a starting point for running your own numbers.

On BNBCalc's side, you choose where the estimate comes from: the model's own comp picks, your own set, the top 50% of comps or a manual override. Whichever you pick, I'll admit every model like this has the same ceiling, ours included. No model sees your photos, your hot tub, your water pressure, or whether you answer the phone at 11pm, so underwrite the low end of any revenue estimate.

Reviews on outside sites are the one check you can run on any tool, us included, and Rabbu has almost none. When I looked on 16 September 2026, its Trustpilot profile, claimed in 2022, had no reviews. Its G2 listing was unclaimed with zero reviews that day, and Product Hunt had one. That means there's no pile of complaints, but it also leaves you no outside source to check its numbers against.

BNBCalc vs Rabbu Pricing

What does Rabbu cost you? Nothing, as far as I could tell, since its site has no pricing page and lists no plans. I tried it on 16 September 2026, and the address estimate, the Market Finder, the city market data and the full Investor Return Calculator all worked without an account. The only paid thing I found was an upgrade that gets a seller's listing seen more, and Rabbu doesn't publish what that costs.

The tools stay free because the deal itself is the product. Rabbu makes its money through buyer's agents, DSCR lenders and a done-for-you search service for buyers, and its about page lays it all out.

I think that's a fair way to fund a free tool, and I'd still pay for BNBCalc, because $79 a month gets you data on markets outside the US and a grade on every comp. You also get running costs suggested line by line and four deal types on the same address. That's BNBCalc Markets with the full Calculator included, as of September 2026, or $30 a month for the Calculator alone.

You can run two property analyses free, or start a 7-day free trial with full access.

If you do subscribe, you've got 14 days after your first charge to cancel for a full refund.

Frequently Asked Questions

Which Is Better for Short-Term Rental Investors?

BNBCalc, for investors looking beyond the US or wanting to know why each comp made the cut. BNBCalc Markets covers roughly 2,400 markets in 157 countries and comes with the BNBCalc Calculator, which grades each comp, explains its rejects and runs the numbers with a loan. Rabbu ranks markets, lists its comps and runs the deal numbers for free, but only in the US. As of September 2026, its public pages don't mention a grade for each comp or say why a given comp was left out.

Is BNBCalc a Good Rabbu Alternative?

Yes, especially outside the US, where Rabbu's data stops. BNBCalc Markets covers roughly 2,400 markets in 157 countries, about four in five of them outside the US. Every Calculator estimate rests on up to 50 comps, each one graded, with rejects explained and a flag if the set leans high or low. As of September 2026 the Calculator is $30 a month, and Markets is $79 with the full Calculator included.

Is Rabbu Really Free?

As far as its public site shows, yes. Rabbu sells no subscription, has no pricing page and lists no plans. Its address estimate, Market Finder, city market data and full Investor Return Calculator all worked with no account on 16 September 2026. Its sign-up prompt, though, can't be closed after the third time it shows up. Sellers can pay to get their listing seen more, but Rabbu doesn't publish the price. It makes its money on the deal itself, through buyer's agents and DSCR lenders.

How Accurate Is Rabbu's Revenue Estimate?

Rabbu doesn't publish an accuracy percentage. Accuracy "is largely down to execution and changing market conditions, both of which are impossible to predict," its FAQ says. Rabbu says its default comps are Airbnb listings with the same number of bedrooms within a mile. It says it widens that radius where there aren't enough comps and drops outliers on its own. As of September 2026, its estimate only counts nightly rates and leaves out cleaning, pet and early-check-in fees.

Does BNBCalc Cover Markets Outside the United States?

Yes. BNBCalc Markets covers roughly 2,400 markets in 157 countries, about four in five of them outside the US. Each market shows revenue, occupancy, ADR, RevPAR, booking lead time and three-plus years of history, plus every Airbnb and Vrbo listing in it. A few things are US only, such as gross yield, estimated property values and the depreciation tool.

The Bottom Line

So which would I buy? BNBCalc, if you're investing beyond the US or want to know why each comp made the cut rather than just which ones did. I'd also pick it if you want your running costs suggested line by line, each with a reason. Markets ranks the markets, and the Calculator that comes with it underwrites the house with the loan on top. That's $79 a month for both, as of September 2026.

Rabbu does give away a lot for nothing, including US market rankings and a return calculator that handles a loan. BNBCalc is still my pick, though, because none of it reaches past the border. Remember, too, that Rabbu's estimate only counts nightly rates.

Our full Rabbu review goes deeper on its data, and the data and analytics roundup covers the rest of the field.

When you're ready to price a specific house, start on the pricing page, where you can run two property analyses free or start a 7-day free trial with full access.

Whichever tool you end up paying for, I think the number to distrust is the confident one. Every revenue estimate is an average of other people's businesses, but you aren't buying an average, you're buying one house with your name on the loan. So cut the estimate, put the mortgage on top and look at what's left standing, because a deal that only works on the best-case version of the number was never really a deal.