Open a product
A small card appears in the lower-left corner. It does not cover the buy box or take the cursor away from what you were doing.
New A Chrome extension that keeps your shopping to itself
Same item.
Lower price.
Nobody watching.
On any product page, Sidelane quietly checks other stores for that exact item and says how much you would save, in plain words. If you are not ready to buy, it keeps an eye on the price for you.
- Shopping stays on this computer
- Not paid when you click
- No account
Example
Example screens. Stores and prices are made up to show the layout.
What you could save
$830a year
You could save about $830 a year just by buying the same things from the store that charges less. The exact same item often costs more at one store than another, and most people never check.
18.8%
Usually, the exact same item cost about 19% more at one store than at another nearby.
Aparicio, Metzman & Rigobon, 2023
57%
For the same gadget online, the most expensive store charged 57% more than the cheapest one, on average.
Baye, Morgan & Scholten, 2006
$4,415
What the average U.S. household spent in 2024 on clothes, furniture, and things for the home.
U.S. Bureau of Labor Statistics
You could save every year
$830
How we got $830: 18.8% of $4,415. It's an estimate from the public research above, not a number from Sidelane users. We don't track what you buy, so we can't see what you save. What you actually save depends on what you shop for and whether another store has it for less.
How it works
It works off to the side.
It works off to the side.
You keep shopping.
Sidelane never moves the buy button, takes over the page, or opens tabs in front of you. The lookups happen in the background.
See what you'd save
It checks Google, Amazon, Walmart, and Bing Shopping for the same item and tells you right away, like “You'd save $38 at Store B.” Only prices it actually saw are shown. A coupon appears only when a real code is on the page.
Hear when it drops
Choose “Tell me if it gets cheaper.” Sidelane rechecks every couple of hours and shows a Chrome notice when the price is lower.
Inside Sidelane
The parts you'll
The parts you'll
actually see.
These are layouts from the extension, with example items.
Every price you've checked, in one place.
Drops are highlighted in orange. Stop alerts, open the store, or remove an item, and the list tells you right away what happened.
One click from anywhere.
The toolbar icon counts the drops you haven't opened yet. Click it to bring the card back or open Your list.
A notice when it's cheaper.
It's an ordinary Chrome notice on this computer. There's no email, and we don't need your phone number.
The whole point
Checking a price shouldn't build a profile of you.
Most shopping tools pay for themselves by learning what you buy. Sidelane is built the other way around. The product, the price, and your list stay in this browser. A small model shipped inside the extension reads the page right on this computer.
- No account. Nothing to sign up for or log in to.
- Nothing you shop for is sent to Sidelane. It isn't sold or used for ads.
- No affiliate links. Tracking tags are removed from store links, and we aren't paid if you click.
- Your cart, email, and payment details are left alone. Sidelane only reads the product on the page.
- No trackers on this site. No analytics, no ad pixels, and no web fonts loaded from anyone else.
Pricing
Comparing is free.
Comparing is free.
Forever.
You only pay if you want Sidelane to watch more than three prices at once.
Free
$0
No account, no card
- Compare the page you're on, every time
- Watch 3 prices for drops
- Chrome notices and a count on the toolbar icon
- Notes about possible scams, only when the page gives a reason
Subscription
$29 / year
About $2.42 a month · or $4 billed monthly
- Everything in Free
- Watch more than 3 prices
- Cancel any time from Settings
- Stripe handles the card. This computer only learns that you've paid
Sold by Keytech Group LLC, not Google. Canceling stops future charges, and the time you've already paid for runs to its end. Email the support address on the Chrome Web Store listing within 14 days of a charge to have it refunded.
Shop like someone's
on your side.
Sidelane is on its way to the Chrome Web Store. When it's listed there, this button will take you to it.