AmzChart vs ChangeTower

AmzChart is a product research tool for Amazon sellers, available on the web and as a browser extension. Sellers can search by keyword, brand, or ASIN and filter products using measures such as BSR, review count, and rating. Market search applies those inputs to identify relevant departments and return market insights. Keyword Scout uses reverse ASIN lookup to investigate competitors’ keywords, including long-tail terms for listings. AmzChart says it tracks product performance and can alert users to listing hijacking events or changes; sellers can also save named search filters for later use. Its listed marketplaces include the US, Japan, India, Germany, France, Spain, the United Arab Emirates, the UK, and Mexico. The FAQ says its commodity database contains more than 50 million commodities and is updated daily, with over 9 million daily updates. The browser extension’s Price History Tracker shows historical and lowest prices across 11 listed Amazon locales and does not require an account. The Free Plan costs nothing and includes five daily product searches, five daily product refreshes, and the US marketplace.

ChangeTower monitors named web pages, checks them for changes against user criteria, saves dated snapshots, and sends alerts. Its AI monitoring lets users describe changes in plain language, while section and element monitoring can focus checks on selected page content. A browser extension can start a monitor for the page currently open. For pages behind a login, users can record sign-in and other actions for replay before a check. Email alerts are available; Slack, webhooks, and MCP are offered on Business and Enterprise. A native Microsoft Teams integration is in development. The free plan covers 3 pages checked daily and 30 days of snapshot history. Lite costs $12 a month and includes 25 pages and AI monitoring; Essential costs $36 a month, and Business costs $78 a month. Business includes six months of snapshot history. Enterprise pricing is custom. Pages that block automated traffic outright, including X, LinkedIn, Facebook, and Instagram, cannot be monitored.