Hardartcore built the Car Logger app as a free app, with no ads. This page explains what data the app handles, where it is kept, and how you can delete it.
Information I collect
Your records (your cars, fill-ups, expenses, odometer readings, reminders and receipt photos) are never sent to me. I do not run a server for the app and I never see them.
To find and fix bugs, the app can send crash reports and usage statistics to Google's Firebase services:
- Crash reports (Firebase Crashlytics): what went wrong and where in the code, the app version, the phone model, the Android version, and the state of the phone at the time, such as free memory and orientation.
- Usage statistics (Google Analytics for Firebase): which screens of the app are opened, how long and how often the app is used, and general information such as the phone model, Android version, language and approximate country.
Both are tied to a random identifier that Firebase creates for the app's installation, not to your name, email address or Google account. The app does not use your phone's advertising ID, shows no ads and does not use this data for advertising.
Your choice
If you are in the European Economic Area, the United Kingdom or Switzerland, nothing is sent unless you agree when the app first asks. Everywhere else, crash reports and usage statistics are on until you turn them off. Wherever you are, you can change your answer at any time in Settings → Your data → Share crash reports and usage statistics. Turning it off stops collection, discards any crash reports still waiting on your phone, and resets the app's Analytics identifier.
For users in the EEA, the UK and Switzerland, the legal basis is your consent; elsewhere, my legitimate interest in keeping the app working. Google processes this data on my behalf and may do so outside your country. It keeps crash reports for 90 days, and usage statistics for the retention period set in my Analytics account. Google's own terms are in the Firebase privacy information and the Google Privacy Policy.
Data stored on your device
Everything you enter (your cars, fill-ups, expenses, odometer readings, reminders and receipt photos) is stored in the app's private storage on your device. Receipt photos are copied into the app when you attach them. Android's own automatic backup is turned off for the app.
Google sign-in and the Drive backup
Signing in with your Google account is optional and only needed for the backup. When you sign in, the app uses Google sign-in to identify your account and asks for access to the app data folder of your own Google Drive (the drive.appdata permission). This is a private, hidden folder that only Car Logger can use: the app cannot see, read or change any other file in your Drive.
The app keeps one backup file of your records there, replaced each time it uploads, along with a copy of each receipt photo you attached. It offers them back when you sign in on a new or reinstalled device. The backup lives in your Google Drive and is handled by Google under the Google Privacy Policy. It is sent over an encrypted (HTTPS) connection.
Importing, exporting and restoring from a file
When you import a CSV file exported from another app, such as Fuelio, or restore from a backup file you exported from Car Logger, the file is read on your device only.
When you export your records as CSV or JSON, the file is saved wherever you choose on your device. The app does not send it anywhere; what happens to it afterwards is up to you.
Permissions
- Internet and network state: for Google sign-in, the Drive backup, and crash reports and usage statistics if you allow them.
- Notifications: for the renewal and service reminders you set up.
Deleting your data
- In the app, Settings → Your data → Delete all my data deletes everything stored on your device. If you are signed in, it also deletes the backup and receipt photos from your Google Drive and signs you out.
- Deleting a car in the app deletes its whole history.
- To have crash reports and usage statistics already sent from your phone deleted, email me at support@hardartcore.com. Turning the setting off stops anything more being sent.
- Uninstalling the app deletes everything stored on your device, but not the Drive backup.
- If you have already uninstalled the app, you can still delete the Drive backup: open Google Drive on the web, go to Settings → Manage apps, find Car Logger and choose Delete hidden app data.
Children's privacy
Car Logger is not directed at children under 13, and I do not knowingly collect information from children.
Changes to this privacy policy
I may update this policy from time to time. Any changes will be posted on this page.
This policy is effective as of October 19, 2026.
Contact
If you have any questions about this privacy policy, contact me at support@hardartcore.com.