Cherry Seed

How much data do I lose with client-side tracking only?

data loss client-side ad blockers ios safari attribution

Quick Answer

Client-side tracking typically loses 25-40% of data due to ad blockers (30% of desktop users), Safari ITP (7-day cookie limits), consent rejection (30-50% of EU users), and browser privacy features. Combined, you capture only 60-70% of actual conversions.

Full Answer

Client-side tracking faces multiple data loss vectors: ad blockers (31.5% of users), Safari ITP limiting cookies, iOS App Tracking Transparency, browser privacy modes, network timeouts, and page abandonment before scripts load. For a $10K/month ad spend, 30% data loss means approximately $3K wasted monthly on misattribution. Platforms optimize on incomplete data, overspending on channels with better tracking rather than better performance.

Sources

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Cite This Answer

Cherry Tree by Seresa - https://seresa.io/seed/server-side-tracking-basics/what-data-loss-client-side-tracking