Integration
Paddle revenue, joined with your app revenue
Connect Paddle Billing and WhyItChanged pulls completed transactions and approved refunds, after tax and Paddle's fee, in your payout currency, and adds them to App Store revenue.
What WhyItChanged pulls from Paddle
- Completed transactions (payout totals: total − tax − fee)
- Approved refund adjustments
Questions it answers
- What do I keep across Paddle and the App Store?
- Did refunds spike after a release?
Access it needs
An API key with transaction.read and adjustment.read. Credentials are encrypted at rest and used read-only. How keys are handled.
Set it up
- In Paddle open Developer tools → Authentication and create an API key.
- Give it transaction.read and adjustment.read.
- Paste it into the Paddle connector. Sandbox and live keys are detected automatically.

Questions
Paddle Classic?
Only Paddle Billing is supported.
Guides
Works well with
Stripe
Add Stripe web revenue, net of fees and refunds, on top of App Store and RevenueCat revenue. Read-only restricted key, synced hourly.
Polar
Pull Polar orders and refunds, net of Polar's fee and tax, into one timeline with App Store revenue, ad spend and releases.
Lemon Squeezy
Pull Lemon Squeezy orders, renewals and refunds into one timeline with App Store revenue and ad spend.
See why your numbers moved.
Start freeFree for 1 app · No card