Apple's Intelligent Tracking Prevention, iOS 17 privacy updates, and the slow death of third-party cookies have broken a lot of analytics tools. If you still measure traffic the way you did in 2019, your numbers are wrong. Here is what works in 2026, and why bio links actually have an advantage.
What broke
Third-party cookies are blocked by default in Safari, Firefox, and (mostly) Chrome. Client-side pixels lose attribution after seven days of inactivity on iOS. Referrer data is stripped between some apps. Your Google Analytics numbers can be off by 20 to 40% without you noticing.
Why bio links are different
A bio link is a first-party page. When someone visits it, you own the tracking session, not a third party. You are not bolting analytics onto someone else's site. Your bio page is the site. First-party data survives the privacy updates almost entirely.
What still works
- First-party pageview logging. Your bio page can log every visit server-side, with no cookie at all.
- UTM parameters. They are part of the URL, not a cookie, so they pass through any privacy wall.
- Server-side events. Conversion pixels fired from your server (not the browser) bypass ITP entirely.
- Consent-based analytics. If a visitor opts in, you get everything. If they do not, you get aggregate counts.
What does not work anymore
- Third-party cookie audiences older than a week on Safari and iOS.
- Cross-site tracking without explicit consent.
- Fingerprinting (banned on iOS 17 and up).
How BioWise handles it
BioWise uses first-party pageview logging for every visit, auto-tags UTMs so URL-based attribution always works, and supports server-side events for Meta and TikTok. You get accurate analytics without asking visitors to sign consent banners for every click.
What you should do this month
- Make sure your bio link tool does first-party tracking.
- Tag all your links with UTMs. Guide here.
- Install server-side conversion events on your main site.
- Stop trusting any single number older than seven days on iOS.
BioWise. Analytics that survive iOS 17. Related: how to track bio link conversions end-to-end.