> ## Documentation Index
> Fetch the complete documentation index at: https://help.airbridge.io/llms.txt
> Use this file to discover all available pages before exploring further.

# How to compare Meta and TikTok on paying subscribers, not just installs

The channel with the lowest customer acquisition cost (CAC) does not always bring the most paying subscribers. To see which channel's installs turn into subscriptions, view the paying user rate (PUR) and return on ad spend (ROAS) by channel alongside CAC in the Revenue report. The date range applies to the start event, Install, so the report shows what share of users who installed in that period subscribed in the days that follow. To set up this report step by step, watch the video.

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