Best Price Tracker Apps & Extensions Compared (2026)

Published August 6, 2026 · IncreoScale Editorial

Retailers change prices constantly — around Prime Day, Black Friday, and even on an ordinary Tuesday. A price tracker app watches a product for you and tells you when it's actually worth buying, instead of you refreshing a product page and hoping. The right price tracker app depends on what you shop for: Amazon-only tools show the deepest price history, while multi-retailer tools trade some of that depth for broader coverage.

Before picking one, know what you're comparing: platform support (browser extension, mobile app, or built into a site you already use), cost (free versus a paid tier for advanced features), alert types (price-drop only, or also price-increase and back-in-stock), and price history depth (a full interactive chart versus a simple high/low/typical badge).

Why Track Prices Before You Buy

A "limited-time deal" badge doesn't tell you whether a price is actually low. Retailers routinely raise a price for a few days before a sale so the "discount" looks bigger, and list prices can swing by 10–20% around major shopping events. A price tracker replaces guesswork with a chart: you can see whether today's price is close to the all-time low, or whether it's worth waiting.

• Avoid buying right before a price drop by watching the trend, not just today's number
• Catch inflated "was" prices used to make a discount look bigger than it is
• Get notified automatically instead of manually re-checking a product page every day
• Some tools also alert you if a price rises after you've added something to a wishlist

The 6 Tools, Reviewed

1. Keepa

Keepa adds an interactive price-history chart to every Amazon product page via its Chrome, Firefox, and Edge extension, plus standalone iOS/Android apps. It's Amazon-only, but it covers Amazon marketplaces well beyond amazon.com. Setting a price-drop watch is a free, standard feature — you don't need to pay to get notified when a price falls. Keepa Pro (€29 per month) unlocks price-increase alerts, tracking up to 10,000 products at once, sales-rank and Buy Box graphs, and bulk product search (Product Finder).

• Platforms: Chrome, Firefox, Edge extension; iOS/Android app
• Cost: free tier; Pro subscription for advanced tracking
• Best for: shoppers who live on Amazon and want the deepest price history

Read our full breakdown of Keepa's free tier, what's actually Pro-only, and how safe it is to install in the Keepa deep-dive. If you also shop Amazon.co.jp, Rakuten, or Yahoo! Shopping, note that Keepa is Amazon-only — Kakakuro is a free Chrome extension built specifically for comparing those three Japanese storefronts side by side, including points-adjusted pricing.

2. camelcamelcamel

camelcamelcamel is a free, ad-supported website that has tracked Amazon prices for years. Paste a product URL into its search bar and you get a full price-history chart with no account required; creating a free account unlocks price watches (email alerts when a product hits your target price) and a wishlist importer. Its Camelizer browser extension (Chrome, Firefox, Edge, Opera, and Safari) shows the same chart directly on the Amazon product page.

• Platforms: website + Camelizer extension; no dedicated mobile app
• Cost: completely free, supported by ads and Amazon affiliate links
• Best for: a quick, no-signup price-history lookup on Amazon

3. Honey (PayPal Honey)

Honey is a free browser extension, owned by PayPal, best known for auto-applying coupon codes at checkout. Its Droplist feature also tracks prices on saved products across thousands of retailers — not just Amazon — and its Honey Gold program pays a small percentage of purchases back as gift-card credit.

Honey has also faced significant scrutiny: a viral 2024 investigation and subsequent class-action lawsuits alleged that the extension overwrote other websites' affiliate links at checkout — redirecting referral credit to Honey even when it hadn't found a better coupon — and that it sometimes withheld the best available code. Litigation against PayPal over these claims remained active as of mid-2026. This doesn't affect the accuracy of Honey's price-drop alerts, but it's worth knowing before you install it.

• Platforms: Chrome, Firefox, Edge, Safari extension; mobile app
• Cost: free
• Best for: coupon auto-apply plus price-drop alerts across many stores, if the affiliate-link behavior doesn't concern you

4. Slickdeals

Slickdeals is a deal-sharing community with a built-in price tracker. Its Deal Alerts let you save a keyword, product, or store and get notified when the community posts a matching deal or a tracked price drops. Because it leans on crowd-sourced deal posts as much as automated price checks, it can surface deals that a purely automated tracker misses — but it's not a substitute for a dedicated price-history chart.

• Platforms: iOS/Android app + website
• Cost: free
• Best for: shoppers who want deal-community context, not just a price number

5. Google Shopping "Track Price"

Google's Track Price feature is built directly into Google Search, Google Shopping results, and the Chrome browser — no extension to install. Sign in with a Google Account, toggle Track Price on a listing, and Google sends a push notification (via the Google app) and an email when the price drops below your target. Some listings also show a badge indicating whether the current price is high, low, or typical compared with the past three months. Price tracking is available in the United States, Canada, Australia, Japan, and India.

• Platforms: Google Search / Google Shopping web; Chrome browser
• Cost: free
• Best for: shoppers already comparing options in Google Shopping who want a one-click tracker with zero install

6. Capital One Shopping

Capital One Shopping is a free browser extension and app open to anyone, not just Capital One cardholders. Beyond price tracking and drop alerts, its standout feature is Price Protection: link the email inbox where you receive order receipts, and Capital One Shopping scans for eligible recent purchases and automatically files refund claims on your behalf if the price drops afterward. It also includes an in-store barcode scanner that compares a product's price across other retailers.

• Platforms: Chrome, Firefox, Edge, Safari extension; iOS/Android app
• Cost: free
• Best for: shoppers who want automatic post-purchase refunds, not just pre-purchase alerts

How to Choose the Right Price Tracker

The right tool depends on where you shop and what kind of alert you actually want.

Mostly shop Amazon and want the deepest price history — use Keepa or camelcamelcamel. Keepa's Pro tier adds price-increase alerts and bulk tracking; camelcamelcamel stays free with a simpler feature set.

Shop many different stores and want coupons plus price drops — use Honey or Capital One Shopping. Weigh Honey's affiliate-link controversy against Capital One Shopping's automatic post-purchase refund claims.

Want deal-community context, not just a number — use Slickdeals. Its Deal Alerts combine crowd-sourced deal posts with keyword and product tracking.

Don't want to install anything — use Google's Track Price feature directly in Google Search, Google Shopping, or Chrome.

Shop Amazon.co.jp, Rakuten, or Yahoo! Shopping — none of the tools above cover Japanese storefronts side by side. Kakakuro is a free Chrome extension built for exactly that, including a points-adjusted effective price. See our guide to effective lowest price with points for how that calculation works.