Apple's Intelligent Tracking Prevention, iOS 17's 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's 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 7 days of inactivity on iOS. Referrer data is stripped between some apps. Your Google Analytics numbers can be off by 20–40% without you knowing.
Why bio links are different
A bio link is a first-party page. That means when someone visits it, you own the tracking session — not a third party. You're 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. These 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 don't, you get aggregate counts.
What doesn't work anymore
- Third-party cookie audiences older than a week on Safari/iOS.
- Cross-site tracking without explicit consent.
- Fingerprinting (banned on iOS 17+).
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 your 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 7 days on iOS.
BioWise — analytics that survive iOS 17. Related: how to track bio link conversions end-to-end.