Numbiro (Ad-supported version) Privacy Policy

Numbiro does not collect any personal data such as your name, email address or photo. It does send anonymized data to third parties for the purposes of monitoring and improving the app. Below is a summary of the data collected by Numbiro or third parties:

Google Analytics

From version 2.0.0 onwards, Numbiro uses Google Analytics to understand user behaviour, with the intention of improving the functionality of the app in the future. You can read information about the data which Google Analytics collects on their Data Collection document.

According to this document, the following information is collected by Google:

Number of users
Session statistics
Approximate geolocation
Browser and device information

In addition, Numbiro explicitly sends the following information to Google Analytics:

Quiz parameters (the number range, quiz time and Japanese counters selected)
In-app purchases, including which screen of the app the user was viewing when a purchase was made

To achieve this, Google will use a unique identifier to recognize you across subsequent visits. This is not tied to your real identity at all. You also have control over whether this unique identifier can be used - see the document above for more detail.

Appsflyer

From version 1.3.2 onwards, Numbiro uses AppsFlyer to help understand where users are installing the app from. You can read information about the data which AppsFlyer collects on their Safety Section Form document. According to this document, the following information is collected by AppsFlyer:

Approximate Location: the IP address is received and mapped to a region/city level.
In-app purchases and subscriptions
App launches
Launch time
Battery levels
Ad ID, if accessible

Firebase Crashlytics

From version 1.2 onwards, Numbiro uses Firebase Crashlytics to report any crashes which occur, so that we can improve the app and fix bugs in the future. You can read information about the data which Crashlytics sends in the Firebase Crashlytics and Firebase App Distribution Terms of Service, and the Crashlytics and App Distribution Data Processing and Security Terms. This is also summarized in Privacy and Security in Firebase. According to these documents, when a crash occurs, the following is an example of the information is sent to Google:

A unique identifier for the device, allowing Crashlytics to identify duplicate crashes
The timestamp of when the crash occurred
Numbiro's bundle identifier and full version number
The device's operating system name and version number
A boolean indicating whether the device was jailbroken/rooted
The device's model name, CPU architecture, amount of RAM and disk space
The uint64 instruction pointer of every frame of every currently running thread
If available in the runtime, the plain-text method or function name containing each instruction pointer.
If an exception was thrown, the plain-text class name and message value of the exception
If a fatal signal was raised, its name and integer code
For each binary image loaded into the application, its name, UUID, byte size, and the uint64 base address at which it was loaded
A boolean indicating whether or not the app was in the background at the time it crashed
An integer value indicating the rotation of the screen at the time of crash
A boolean indicating whether the device's proximity sensor was triggered

Note that the unique identifier effectively counts as a tracking ID, since it allows crashes to be recognized as originating from the same device over time. However, it is not used for any other purpose. There is NO personally identifiable information being sent. Firebase says they delete the data after 90 days. The data may be processed anywhere in the world.

Numbiro analytics

From version 1.2 onwards, every time you start a quiz session, the quiz parameters are sent to Numbiro's servers. We store this information to help understand how the app is being used, and to improve it in the future. Specifically, the data sent is:

The number range
The quiz time
The Japanese counters selected

The data does NOT include the name of the preset you selected. The data is COMPLETELY anonymized: that is, there is NO way to identify records which originated from the same user or same device.

Google AdMob

Numbiro presents ads provided by Google AdMob. According to AdMob, it may collect and share the following information:

IP address - collects device's IP address, which may be used to estimate the general location of a device.
User product interactions - collects user product interactions and interaction information, including app launch, taps, and video views.
Diagnostic information - collects information related to the performance of your app and the SDK, including crash logs, app launch time, hang rate, and energy usage.
Device and Account identifiers - collects Android advertising (ad) ID, app set ID, and, if applicable, other identifiers related to signed-in accounts on the device.

This data will be anonymized and will not contain any personally identifiable information. You can read more on the Google AdMob documentation.