Know which ad actually paid for your subscribers.
Sourceline connects your ad spend to real RevenueCat revenue, trials, conversions, renewals, refunds, so you see true ROAS per channel and creative, not just installs.
No credit card · 5 minutes to connect
Real ROAS by channel
Meta says 2.1x. Once trials cancel and refunds land in Stripe/RevenueCat, TikTok's ROAS is under 1x, the exact spend that should get cut first.
Everything between ad spend and Stripe payout.
Sourceline turns RevenueCat events and ad-platform spend into the numbers that decide next month's budget.
Channel & campaign ROAS
Realized revenue against spend, not trial starts dressed up as conversions.
Cohort LTV curves
Day 1/7/30/90 revenue per install cohort, so you know payback period before you scale.
Creative #14: "Free trial"
TikTok · Winter Promo
Creative-level attribution
See which ad is paying for itself, not just which platform. Kill the creative, not the campaign.
#growth-alerts
●TikTok: Winter Promo dropped to 0.8x real ROAS
Alerts that matter
Slack or email the moment a campaign’s real ROAS drops below your threshold.
Today, ad platforms lose sight of a subscriber the moment they open your app. A trial start reads as a conversion, the cancellation three weeks later reads as nothing, and the campaign that looked like your best one is quietly the reason your blended CAC keeps climbing.
Not another platform to onboard your team to.
AppsFlyer and Adjust are built for teams with a dedicated growth analyst. Sourceline is built for the one person deciding whether to keep spending on Meta.
We still do the hard part behind the scenes, trial state, refunds, real conversion tracking. The dashboard just does not need to show its work.
Three steps, five minutes.
Paste a read-only RevenueCat API key. We pull trials, conversions, renewals, and refunds. Nothing writes back to your account.
RevenueCat API key
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Built to respect the privacy rules that started this problem.
Read-only by default
Your RevenueCat and ad-account keys are read-only. Sourceline never writes back to your accounts.
No device fingerprinting
Attribution is done server-side from spend and click IDs you already have, no SDK, no extra tracking prompt for your users.
ATT / SKAdNetwork-safe
Nothing here relies on device-level identifiers Apple has already restricted. It works within the privacy rules that broke everyone else.
Revoke access anytime
Disconnect any account in one click. Your data export leaves with you. Nothing is held hostage.
Runs on the stack you already have.
No new SDK to ship. Connect the accounts you're already using.
Priced for the spend you actually track.
Free while we're in private beta. These are the plans we'll launch with.
Starter
Up to $500/mo tracked ad spend
- 1 app
- 7-day data history
- Channel-level ROAS
- Email support
Growth
Up to $10k/mo tracked ad spend
- 3 apps
- 12-month data history
- Campaign & creative-level ROAS
- Cohort LTV curves
- Slack & email alerts
Scale
Unlimited tracked ad spend
- Unlimited apps
- Unlimited history
- API access
- Priority support
Questions worth asking upfront.
Stop guessing which ad pays for itself.
Join the private beta and connect RevenueCat in five minutes. Free while we're in beta.