I’m measuring behaviour for a mobile app, it’s a free app.
I’m seeing a major discrepancy between the number of installs registered by Apple App Store Connect & my internal database data vs. an event I’ve defined that gets fired when the user views the splash screen in the app.
for example, for the same time frame
- App Store connect shows 1300 first time downloads
- My internal data says it’s 1270 first time downloads
- Amplitude reports 1110 users who fired my splash screen event for the first time
- Amplitude reports an even lower number of 948 if I look at “New Users”
As you can see there’s a 14% difference between Amplitude and Apple at best and a 27% difference between Amplitude and Apple at worst.
I can’t seem to figure out why there’s such a big difference. I read the FAQ regarding IDFA and it doesn’t seem like App Tracking Transparency is the cause here (source)
Can someone help me?
