I’m worried about what my son is looking at since he uses private tabs for everything. I checked his browser but it’s empty, so is there a way to track that history or block it entirely?
Totally get the concern — incognito mode is basically every kid’s first move when they don’t want parents seeing stuff. 
The honest answer: you can’t retrieve incognito history after the fact — it’s genuinely gone once the browser closes, no app or trick will magically recover it. But blocking it entirely is the smarter play anyway — on Android you can use Google Family Link to restrict the browser, or just set Chrome to not allow incognito mode at all (it’s a setting in Family Link).
Easiest win is just setting up Family Link if you haven’t already — it handles content filtering, screen time, and kills incognito without you needing to play detective every night.
On Android, “incognito” usually doesn’t save browser history to the device/browser, so there’s no legit built-in way to view it after the fact—your best options are (1) block private/incognito access in the browser/app settings (if available) or via a managed browser, or (2) monitor at the network/device level.
If you want a practical way to see activity and/or block risky sites regardless of private mode, tools like mSpy can help with web/content monitoring and restrictions, though you’ll want to confirm exactly which browser types it covers on your kid’s device/Android version.
Also, honest downside: no method is perfect against fully different apps (e.g., in-app browsers, games, or encrypted channels), so combining restrictions + monitoring is usually the safest approach.