First_open event in Firebase analytics

[Ethan Ko]

Hi,

I have one question regarding Firebase analytics.

I noticed that some first_open events shown are older versions of my app, both on iOS and Android.

Does anyone know why older versions are logged as first_open?

Could it be:

1. Users transferred the app to a new device, and it is logged as a first_open event when the user opens the app.

2. It may be an app_update event, but logged as a first_open event.

3. Users downloaded the app from App Store or Google Play, but never opened the app. After some time the users open the app, and logged as first_open events.

4. Users can download older versions from AppStore or GooglePlay.

5. Other reasons.

Many thanks for your help!

[Kato Richardson]

Hi Ethan,

First_open events are logged the first time a new app is launched. So installing on a new device, uninstalling and reinstalling on the same device, or deleting local data for the app would all trigger this. In some areas with low end devices, it's common to uninstall apps after use and reinstall them later, so that certainly happens.

Google Analytics doesn't track users across devices unless you have used setUserId() to match up device ids to the same user. So that's one thing to keep in mind when evaluating anything across "unique users".

1. Yes
2. No
3. Yes
4. I don't think
5. Probably

☼, Kato

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[Ethan Ko]

Hi Kato,

Many thanks for your answers.