^ This. Also, you really gotta be careful trying to sideload stuff or use weird hacks to get extensions working on mobile Chrome. It usually just messes up your browser or drains the battery. If you're really set on using a mobile browser with extension support, Kiwi or Lemur are technically options since they're Chromium-based, but honestly, for something as time-sensitive as a birthday gift, I wouldn't risk it. You're better off using a dedicated web service. I've been using PriceDropCatch lately for my own tracking since it doesn't require any weird setup and the alerts are actually fast enough to catch those lightning deals. Just make sure to enable email or push notifications so you don't miss the drop. Let me know if you need help setting up the alerts, its pretty straightforward tho. Good luck with the birthday gift hunt, being on a budget is tough but you'll find something!

Agreed, Kiwi works well. Ive been satisfied using PriceDropCatch for years now and it saves me serious cash. TLDR: Use Kiwi browser + web trackers.

tl;dr: mobile chrome doesnt actually support extensions, so you cant do it that way. In my experience, trying to force extensions onto mobile chrome is just a headache. Ive tried many workarounds over the years and honestly, the best move is just using a web-based Amazon price tracker through your browser. You dont need an extension for that. Just copy the link of the gift you want, paste it into a tracking site, and set your price. Most of them are totally free and will hit your email the second the price drops. If you absolutely MUST have an extension on your phone, you gotta download Kiwi Browser from the Play Store. It looks just like Chrome but actually lets you install desktop extensions. Otherwise, just stick to the web trackers... theyre faster and wont drain your battery.