Know if it's a good price.
Instantly.

ArcSignal tracks prices across seven major stores, keeps the full history, and tells you whether to buy or wait. Private by design, with no account.

Works on Amazon, Best Buy, Walmart, Target, eBay, Newegg, and Etsy.

Tracks the stores you already shop

• Amazon
• Best Buy
• Walmart
• Target
• eBay
• Newegg
• Etsy

Stop guessing whether a price is good.

You found the thing you want. The only question that matters is simple: buy now, or wait? Most of the time you have no way to know, so you either overpay today or miss the deal tomorrow. ArcSignal answers that question in one glance, using the item's own price history instead of guesswork.

From install to insight in under a minute.

1. Open a product.

   Visit any product on a supported store. ArcSignal reads the live price straight from the page.

2. Hit Track.

   One click from the popup, the on-page button, or the right-click menu. Price history starts logging immediately.

3. Get the call.

   ArcSignal watches the price for you and tells you whether to Buy, Wait, or Watch, then alerts you the moment it drops.

One tracker. Seven stores.

Most price trackers only cover Amazon. ArcSignal follows your cart across the web: Amazon, Best Buy, Walmart, Target, eBay, Newegg, and Etsy. One tool, one place to see everything you are watching.

• Amazon
• Best Buy
• Walmart
• Target
• eBay
• Newegg
• Etsy

It does the math you wouldn't.

ArcSignal compares the current price against the item's full history, flags when something is near its lowest point, and gives you a clear call: Buy, Wait, or Watch. You get the context behind the number, not just the number.

Set a target. Get the drop.

Set a target price and forget it. ArcSignal watches in the background and sends a notification when the price drops or your target is hit. No need to check back. No need to remember. The deal comes to you.

Your data stays yours.

This is the part most extensions get wrong. ArcSignal keeps everything you track on your own device. There is no account, no signup, and no data harvesting. Your watchlist is yours. We never see it, sell it, or share it. ArcSignal also does not inject affiliate links or quietly take credit for your purchases the way coupon extensions have been caught doing. We make money one honest way: a simple subscription.

• Stored on your device — Your watchlist never leaves your browser.
• No account, ever — Install and track, with no signup.
• Never sold or shared — No data harvesting, no affiliate games, no coupon tricks.

Why ArcSignal beats the usual options.

Start free. Upgrade when you want more.

Secure billing. Cancel anytime.

Frequently asked questions.

What is the best price tracker for Amazon, Best Buy, and Walmart?

ArcSignal is a privacy-first price tracker built for people who shop across more than one store. It follows prices on Amazon, Best Buy, Walmart, Target, eBay, Newegg, and Etsy, keeps each item's full price history, and turns that history into a clear buy-or-wait call. Instead of dense charts, you get a one-glance answer to the only question that matters: is this a good price right now?

How does ArcSignal decide whether I should buy now or wait?

ArcSignal compares the current price against the item's own price history, including its lowest and average price over time. When the price is at or near the lowest point it has seen, you get a Buy verdict; when it is high relative to its history, you get a Wait or Watch. You always see the lowest, average, and current price behind the call, so the recommendation is transparent rather than a guess.

Is ArcSignal a free price tracker Chrome extension?

Yes. ArcSignal is free to install and lets you track up to five products with full price history and buy-or-wait verdicts, forever, with no account. If you want unlimited tracking and automatic price drop alerts, Pro is $8 per month or $69 per year, which works out to about $5.75 per month.

Does ArcSignal sell my data or track my browsing history?

No. ArcSignal keeps your watchlist on your own device. There is no account, no signup, and no data harvesting, and it never sees, sells, or shares what you track. It reads prices only on the store pages you choose to track and does not access the rest of your browsing history.

How is ArcSignal different from Keepa and CamelCamelCamel?

Keepa and CamelCamelCamel are powerful, but they only cover Amazon and are built for power users who like dense charts. ArcSignal brings the same price-history intelligence to seven stores in an interface anyone can read in three seconds, and adds a clear buy-or-wait verdict on top instead of leaving you to interpret the graph yourself.

Is ArcSignal a safe alternative to Honey?

Yes. Honey is a coupon extension widely reported to divert affiliate commissions. ArcSignal works the opposite way: it does not inject affiliate links, does not take credit for your purchases, and does not sell data. It is a straightforward price tracker you pay for directly, so its incentives stay aligned with yours.

How do price drop alerts and target-price notifications work?

Set a target price on any item, or simply track it, and ArcSignal watches the price in the background on a regular schedule. The moment the price drops or hits your target, it sends a notification, so you never have to keep checking back. The deal comes to you.

Which online stores does ArcSignal track prices on?

ArcSignal tracks prices on seven major stores: Amazon, Best Buy, Walmart, Target, eBay, Newegg, and Etsy. You manage everything you are watching across all of them in one place, instead of juggling a separate tool for each retailer.

How long does it take to set up ArcSignal and start tracking a price?

Under a minute. Install the extension, open any product on a supported store, and hit Track from the popup, the on-page button, or the right-click menu. Price history starts logging immediately, with no signup or configuration required.

What browsers and devices does ArcSignal support?

ArcSignal runs on Google Chrome and Chromium-based browsers that support Manifest V3, the current Chrome security standard, across Windows, macOS, Linux, and ChromeOS.

Never overpay online again.

Install ArcSignal, track your first product in under a minute, and let it tell you exactly when to buy.