Compared
We make Nestfair, so read this knowing that. We’ve tried to be fair, and where another tool does something better we say so. We checked prices and features in October 2026.
| Tool | Best at | Values the home? | Asking-price history | Works on | Cost |
|---|---|---|---|---|---|
| Nestfair | Is the asking price fair? | Yes, with a range and a published accuracy test | Drops and relists you’ve seen, plus the listing’s last change | Rightmove, Zoopla, OnTheMarket | Free |
| Propbar | Researching one address in depth | Yes, with a range | Yes | Rightmove, Zoopla, OnTheMarket | From £0.83 a day on a 6-month plan |
| Chimnie | A free value range and area scores | Yes, as a range | No | Its own website | Free |
| Property Track | Every price cut on Rightmove | No (Plus adds comparables and recent sales) | Yes, the full history | Rightmove | Free; Plus from £4.99 a month, billed yearly |
| Property Log | Price cuts and relisted homes on Rightmove | No | Yes, and it links relists | Rightmove | Not listed on its site |
Nestfair is for one question: what is this home worth, and is the asking price above or below that? You get an estimate and a likely range, a warning when a lender’s surveyor is likely to value it below what you pay, and the costs on top of the price. The browser extension puts the estimate and range on the listing itself.
We tested it on 2,400 sales it had never seen and published the result, including where it does badly. The median error was 10.3%. Homes we value at £1 million or more are harder (about 14%). The full method is on our accuracy page.
Where it falls short is price history. Ours only starts when you install the extension, because it’s kept in your own browser. For the history of a listing from before you found it, Property Track or Property Log will show you more.
Propbar is the most complete of the five. According to its site you get every recorded sale since 1995, a valuation, 47 automated risk checks, and schools, crime, flood, planning and demographic data for each address, with an extension for all three big portals. If you’re down to one or two houses and want everything on one page, it’s very thorough.
It costs about £25 a month on the 6-month plan. We couldn’t find a published test of how accurate its valuations are.
Chimnie gives a free value range for most homes in Britain, plus scores for the area such as schools, shops and transport. It’s a good free first look. It works on its own site, not on the listing, and we couldn’t find a published accuracy test for its ranges.
Property Track shows the full asking-price history of a Rightmove listing: every cut, with dates, and how long it’s been on the market. The free version has no limits. Plus, from £4.99 a month billed yearly, adds nearby comparables, recent sold prices and area trends. It doesn’t value the home.
Property Log is narrower. It records price changes on Rightmove and links a relisted home back to its old listing, which stops an agent resetting the clock by taking a house down and putting it back up. It doesn’t value the home, and its site doesn’t give a price.
A price-history extension tells you how keen the seller is. A valuation tells you what the home is worth. Before you make an offer you’ll probably want both, and Nestfair runs fine alongside Property Track or Property Log.