Privacy Policy
This policy applies to the Android apps I, Daniel Alvarez, publish on Google Play and Huawei AppGallery. None of them has accounts, ads or in-app purchases, and I never sell your data.
- Facts: Device Information (
tech.alvarez.facts) - Numbers (
tech.alvarez.numbers) - Operativa: Queuing Theory(
com.danyalvarez.operationsresearch)
What every app collects
The apps include analytics and crash reporting services that run on my behalf. They automatically collect:
- App activity: screens opened, app launches and how long the app is used.
- Crash logs and diagnostics: stack traces and the app state at the time of a crash.
- Device information: device model, operating system version, app version, language and approximate country derived from the IP address.
- Identifiers: a random app instance ID and, where the device provides it, the advertising ID.
I use this data only to understand which features are used, to find and fix bugs and to keep the apps compatible with new devices. It is not linked to your name, email or any other personal identity, and it is never used for advertising.
Facts: Device Information
Facts reads information about your device to show it on screen: hardware, sensors, operating system, Google and Huawei services versions and device identifiers. It asks for the phone state permission for this purpose only. That information stays on your device and leaves it only when you choose to share a value yourself.
Analytics and crash data goes to Google Firebase Analytics, Huawei Analytics Kit and Huawei AppGallery Connect Crash Service.
Numbers
Numbers uses YouTube API Services. The channels you search for or add are sent to the YouTube Data API to get their public statistics, and your list of channels is stored only on your device. By using Numbers you agree to theYouTube Terms of Service, and Google handles those requests under theGoogle Privacy Policy. Numbers never asks for access to your Google account.
Analytics and crash data goes to Google Firebase Analytics and Firebase Crashlytics.
Operativa: Queuing Theory
Every calculation in Operativa runs on your device; the values you enter are never sent anywhere.
Analytics and crash data goes to Huawei Analytics Kit and Huawei AppGallery Connect Crash Service.
Who the data is shared with
Only with the service providers above, which process it on my behalf under their own privacy policies:
- Google (Firebase Analytics, Firebase Crashlytics, YouTube API Services):Google Privacy Policy andFirebase privacy
- Huawei (Analytics Kit, AppGallery Connect):Huawei Privacy Policy
I do not share data with anyone else, except when the law requires me to.
Security and retention
All data is sent over encrypted connections (HTTPS). Analytics and crash data is kept for the limited period set in each provider's console and deleted automatically afterwards. Data stored on your device is deleted when you uninstall the app.
Your choices
You can reset or delete your advertising ID in your device settings, and uninstalling an app stops all collection. To ask about or request the deletion of any data related to your use of an app, email me at daniel@danielo.dev.
Children
The apps are not directed at children under 13 and I do not knowingly collect data from them. If you believe a child has provided data, contact me and I will delete it.
Changes
If this policy changes, I will update this page and the date at the top.
Contact
Daniel Alvarez, daniel@danielo.dev