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Boston · Live now · Chrome side panel

Know before
you tour.

Open the side panel on any Boston rental — Zillow or Apartments.com. Photos, location, amenities, and value vs area median, plus a first-person verdict from Sophia in ~20 seconds.

Add to Chrome — it's free See how it works

Side panel · First analysis free · Email your results

Live result
RentLens
8 credits
21 Radcliffe Rd · Allston · 2bd · $2,950/mo
Great Deal

$180 below area median · 18 photos

82
/100 value
Photos
88
Location
79
Amenities
71

"Real hardwood, updated kitchen. Back Bay 12 min by T. Priced below area median. Tour this week."

Zillow
supported
Apartments.com
supported
60+ zips
Boston metro
Live now
May 2026

How it works

Three steps. Under 30 seconds.

No copy-paste. No tab switching. The extension reads the listing page directly.

01

Browse normally

Homedetails, building pages, and unit modals on Zillow — plus Apartments.com listings. RentLens reads the page directly (including building galleries when a unit only has floor plans).

Zillow · Apartments.com · Building pages
02

Open the side panel

Click the RentLens icon — the panel stays open while you browse. Sign in once with a passwordless email code. Your first analysis is free; optionally add up to 20 tour photos before you run it — uploads replace listing photos for scoring.

Side panel · OTP sign-in · 20 upload slots
03

Get your verdict

Value score, photo/location/amenity bars, commute table (transit · drive · walk), mobility score pills, and Sophia's plain-English take. Email the full results to yourself in one tap.

~20 seconds · Email results

What you get

Four signals. One verdict.

Photo condition, neighborhood, amenities, and value vs area median — one value score, three quality bars, and Sophia's first-person verdict. Building-only listings get honest caveats when unit photos aren't available.

Photo Analysis

Claude reviews up to 25 listing photos across kitchen, bath, finishes, space & light, and overall condition — with kitchen counter space weighted heavily. No unit interiors? We fall back to building gallery shots and say so clearly.

Kitchen Bathrooms Finishes Space & Light Building gallery

Up to 25 listing photos — or upload up to 20 of your own (tour or screenshots) to score those instead

Location Score

Walk, Transit, and Bike Score pills when Zillow provides them. Commute table with transit, drive, and walk times to six hubs — Back Bay, Downtown, South Station, Kendall, Fenway, and Logan — on a typical Tuesday morning.

Walk Score Transit Score Bike Score 6 hubs

Transit · drive · walk columns in the panel

Amenity Detection

In-unit laundry, AC, parking, heat included, dishwasher, gym, outdoor space — detected automatically from listing and building data. Weighted for Boston's rental reality.

Laundry AC Parking Heat Pets Gym

Unit + building amenities combined automatically

Market Value

Zip-level ZORI rent index, adjusted for bedroom count and what we can see in photos. Shows dollars above or below the area median — conservative benchmarks, not a live comp survey — with Great Deal → Overpriced verdict bands.

ZORI index Area median Value score /100

Five verdict bands in plain English

Email & share

After each analysis, tap Email these results in the verdict card — formatted summary with scores, commute, amenities, and Sophia's take. One send per analysis; lands in your inbox for roommates or your spreadsheet.

HTML email Full breakdown One tap

Sent to the email you signed in with

Real verdicts

This is what RentLens tells you.

Three Boston listings. Three different verdicts.

RentLens

21 Radcliffe Rd · Allston

2bd · $2,950/mo

Great Deal

$180 below area median

82
/100 value
Photos
88
Location
79
Amenities
71

"Real hardwood, updated kitchen, Walk Score 93. Priced below what I'd expect for this quality in 02134. Tour this week."

RentLens

447 Comm Ave · Brighton

1bd · $2,200/mo

Fair

$20 above area median

58
/100 value
Photos
62
Location
71
Amenities
44

"Functional but dated — 90s kitchen, carpet in bedroom. Good T access saves it. Fair price for what you're getting."

RentLens

312 Newbury St · Back Bay

Studio · $3,100/mo

Overpriced

$380 above area median

41
/100 value
Photos
48
Location
79
Amenities
28

"You're paying for the zip code. Tiny studio, minimal light, almost no counter space. Better options exist at this price."

Pricing

Pay per analysis. No subscription.

Designed for apartment hunting season — not a recurring charge you forget about.

First analysis free — no credit card required

Every new email gets one free analysis. No commitment.

Add to Chrome

Credit Packs

Buy once, use anytime. Credits never expire.

5 analyses
$0.40 per analysis
$1.99
10 analyses
$0.35 per analysis — save 12%
$3.49
25 analyses
$0.30 per analysis — save 25%
$7.49

Time Passes

Run many analyses during your hunt — each pass has a fair-use cap listed below.

24-hour pass
up to 25 analyses
$2.99
Best value
48-hour pass
up to 60 analyses
$4.99
7-day pass
up to 120 analyses
$9.99

Payments processed securely by Stripe. No stored card data. Nothing to cancel.

Coverage

Boston first. More cities coming.

Built for dense rental markets where every dollar and every decision matters.

Live now

Boston

60+ zip codes — Allston, Brighton, Back Bay, South End, Fenway, Cambridge, Somerville, Jamaica Plain, Brookline, Roxbury, Dorchester, and more.

Zillow + Apartments.com

Add to Chrome
Coming soon

New York City

Manhattan · Brooklyn · Queens

Zillow + Apartments.com

Join NYC waitlist
Coming soon

More cities

Chicago · Los Angeles · Seattle · Washington D.C.

Request a city

Follow along

Behind the scenes.

Boston apartment market data, product updates, and Rate My Apartment every week.

FAQ

Common questions.

RentLens compares the listing's asking rent to a bedroom-adjusted ZORI area median for your zip — the same type of benchmark brokers use at a market level. You get a value score and verdict (Great Deal through Overpriced) in the side panel within about 20 seconds.
RentLens runs in a Chrome side panel on Zillow (homedetails, building pages, and unit modals) and Apartments.com. Open any supported Boston-area listing and click the RentLens icon to analyze.
Your first analysis is free with no credit card. After that, credit packs start at $1.99 for 5 analyses, or choose a time pass if you're hunting hard. No subscription — buy credits when you need them.
Boston metro only right now — 60+ zip codes including Allston, Brighton, Cambridge, Somerville, Brookline, and more. NYC is next on the roadmap.
Scores combine AI photo review, walk/transit location data, amenity parsing, and ZORI-based rent comparison. They're directional benchmarks to prioritize tours — not appraisals or guarantees.
Yes. On building-only pages RentLens analyzes the building photo gallery and amenities, flags when photos aren't from your specific unit, and tells you what to verify on a tour.
We store your email and account data while you use RentLens. Uploaded photos are not stored on our servers. Analysis results are kept in a short-term cache (up to 7 days) then deleted. We never sell your data or train AI on it. See our Privacy Policy for how to opt out of occasional product email.
NYC isn't live yet — join the waitlist. We're finishing Boston coverage first so rent benchmarks stay accurate city by city.
Yes — add up to 20 of your own photos before you analyze. When you upload them, only your photos are scored — ideal after a tour or when listing photos are missing.
Credits never expire — they're yours until you use them. Time passes expire when their window ends (24hr, 48hr, or 7-day) with fair-use caps of 25, 60, or 120 analyses respectively.

Stop guessing on your next apartment.

Boston metro · Live on Zillow & Apartments.com

Add to Chrome — it's free

Zillow · Apartments.com · First analysis free