This document discusses using analytics tools like Google Analytics and Mixpanel to track user events and properties in mobile apps. It provides examples of common events to track like app launches, button clicks, and purchases. Tracking events allows you to analyze user engagement, identify drop-offs, and see what users interact with most. The document also recommends including useful properties for each event like device information, app version, and custom properties. Finally, it shares tips for setting event properties dynamically in Mixpanel using a PropertiesSetter interface.

1. Analytics
event properties
João Orui
Drivemode, Inc.

2. Google Analytics
Mixpanel
Flurry
…

3. a lot of promises,
but it is up to you to collect the data.

4. Events
some examples:
- First launch
- Pressed “sign up” button
- Authenticated successfully
- Authentication error
- Purchased in-app item
- etc...

5. Events
With events tracking you can
- track user activity in your app (engagement)
- find where users are dropping (funnels)
- discover what users love most in you app (retention)

6. now imagine as if you’re trying to understand a drop in your funnel
Sign in screen
viewed
Sign in button
clicked
50% Authenticated90%

7. but imagine as if you’re trying to understand a drop in your funnel
Sign in screen
viewed
Sign in button
clicked
50%
Why!?
90% Authenticated

8. you may think…
we screwed with the last update? let’s check out by version
app version Sign in screen viewed Sign in button clicked
2.0 200 100 (50%)
2.1 100 50 (50%)

9. but in some cases it can be what you expected least
screen orientation Sign in screen viewed Sign in button clicked
portrait 150 140 (93.3%)
landscape 150 10 (6.6%)

10. what really happened
Logo
Sign up
button
Logo
Sign up
button

11. what really happened
Logo
Sign up
button
Logo
Sign up
button
no button
on the
screen!!

12. So.. here are some useful properties for your events
About the app
- app version
- app version number
- version control sha1
- unique install id
- app settings

13. about the device (depends on your needs)
- bluetooth / bluetooth version
- device brand / model / manufacturer
- has nfc / telephony
- os version / SDK level
- screen orientation / size
- wifi (on or off)
- rooted (yes or not)
- has network connectivity
- system language
- device class

14. properties that answer important questions for your app
in our case:
- is the user driving at that moment?
- are key services running?
- what is the TTS engine used?
- has the user completed tutorials? which?
- how many destinations a user has in they database?

15. Tips!
Mixpanel eventsにオンデマンドにプロパティー設定する方法！
おまけに、Mixpanel APIをfluent interfaceにします！
https://gist.github.com/jfsso/1821fd5e3456b626b92f

16. people api
mp.people()
.put("prop1", value)
.putWithSuper("notification setting", settingValue)
.increment("action count", 1)
.send();

17. events
mp.superProperties()
.put("some config", configValue)
.remove("a prop")
.send();

18. event super props
mp.superProperties()
.put("some config", configValue)
.remove("a prop")
.send();

19. on demand props!
public class MixpanelEventPropertiesSetter implements Mixpanel.PropertiesSetter {
private Context mContext;
public MixpanelEventPropertiesSetter(Context context) {
mContext = context;
}
@Override public void execute(JSONObject props) throws JSONException {
props.put("App Version Code", BuildConfig.VERSION_CODE);
props.put("Device Year Class", YearClass.get(mContext));
props.put("Screen Orientation", ConfigurationUtils.getOrientationName(mContext));
}
}

20. Useful links
Device Year Class (by Facebook)
https://github.com/facebook/device-year-class
Puree (by Cookpad)
https://github.com/cookpad/puree-android
Mixpanel
https://github.com/mixpanel/mixpanel-android