Privacy policy

What data the app uses

Only while a ride is being recorded: precise location (position, speed and heading from GPS) and the phone's motion sensors (gyroscope and accelerometer). From these the app computes the lean angle. The calibration of the phone mount and your settings are stored too.

With a RaceBox (an external GPS receiver, a CornerLog Plus feature), position, speed and motion data come from the RaceBox over Bluetooth instead of from the phone. The app remembers the name and Bluetooth address of the RaceBox you chose, only to connect to it again.

In Settings you can enter a name or nickname and the type, make and model of your motorcycle. Both are optional and stay on your phone; they are written into the files you export (see Export and sharing).

The app does not use your contacts or your account. It reads one identifier, Android's ID of this installation (ANDROID_ID), and only on the phone: a short one-way hash of it is shown in About and used to check a reserved rider name. It is not stored with your rides, not written into exports and not sent anywhere.

Where it is stored

Rides are stored only in the app's private database on your phone. The app has no internet permission, so it cannot send your rides anywhere. The only exchange outside the app is the optional CornerLog Plus purchase, handled by the Google Play Store app (see Purchases). There are no ads, no analytics, no tracking and no user accounts.

If you have Android backup or device-to-device transfer turned on, Android may include the app's data in that backup (for example in your Google account). This is controlled by the system settings, not by the app.

A ride backup you create in Settings is a single file in CornerLog's own format. It is saved only where you choose (for example your Google Drive or computer), and from then on it is under your control, like an export.

Export and sharing

Data is never shared with anyone. It leaves the app only when you export a ride to CSV or GPX yourself; the file is saved where you choose and from then on it is under your control. The file contains the recorded ride, its note, what recorded it (the phone or a RaceBox) and, if you entered them in Settings, your name and motorcycle.

The Ride Analyzer inside the app shows a ride offline, on your phone; it downloads no map tiles and has no sharing or contact form. An exported file can also be opened in the Ride Web Analyzer on cornerlog.app and shared by a link from there, only when you choose to; that is described in the website's privacy policy.

Purchases (CornerLog Plus)

CornerLog Plus is bought through Google Play, under Google's terms and privacy policy. Payment is handled entirely by Google; the app never sees your payment details or Google account. The app only asks the Google Play Store app on your phone whether Plus has been purchased and confirms new purchases to it. Your rides and location are never part of this. The app does not talk to any CornerLog server.

Permissions

• Precise location: speed and turning rate for the lean angle and the ride track.
• Foreground service and notifications: so recording keeps running with the screen off and you can stop it from the notification.
• Wake lock: keeps sensors running during a ride.
• Nearby devices (Bluetooth): only to find and connect to a RaceBox, if you choose to use one. The search looks only for RaceBox devices and is never used to work out your location; before Android 12, Android itself requires location to be turned on for it.
• High sampling rate sensors: lets the app read the motion sensors more often.
• Network state: requested by the Google Play Billing library; it only shows whether a network exists. The app has no internet access.

Location is used only while you are recording a ride, never in the background otherwise.

Deleting your data

You can delete any ride in History. The Free version shows your 5 newest rides; older ones stay on your phone but are not accessible until you get Plus, and you can delete them all at once in History.

Uninstalling the app, or clearing its storage in the system settings, permanently deletes all rides, calibration and settings. On Android 10 and later the uninstall dialog may offer to keep the app's data; if you tick that, the data stays on the phone for a later reinstall.

Controller

Walker & Volf s.r.o.
Registered office: Vysokovská 2009/28, 193 00 Praha 9 – Horní Počernice, Czech Republic
Company ID (IČO): 02880296, VAT: CZ02880296
Registered in the Commercial Register kept by the Municipal Court in Prague, file C 224798
Correspondence address: Podnikatelská 539, 190 11 Praha 9 – Běchovice, Czech Republic
E-mail: admin@cornerlog.app
Web: www.cornerlog.app

We have not appointed a data protection officer; the law does not require one for the processing we do. Please send any question or request about your personal data to the e-mail address above.

What we process, why, and on what legal basis

• Rides in the app. Location, motion sensor data, settings and your rider name stay on your phone. We do not receive them, so we do not process them as a controller.
• CornerLog Plus purchases. Google sells CornerLog Plus through Google Play and processes your payment and account as a separate controller under its own privacy policy. We only receive the order details Google makes available to developers, and use them to handle refunds and support and for our accounting. Legal basis: performance of the contract (Art. 6(1)(b) GDPR) and our legal obligations in accounting and tax (Art. 6(1)(c)).
• A message to us. If you write to admin@cornerlog.app or use the contact form on the website, we handle your message as described in the website's privacy policy.

We do not use automated decision-making or profiling, we send no newsletters and the app has no advertising, analytics or tracking.

How long we keep it

• Your rides: we have none; they stay on your phone until you delete them.
• Order and accounting records: for the periods set by Czech accounting and tax law (usually up to 10 years).

Who else handles the data

• Google LLC (USA) sells CornerLog Plus through Google Play as a separate controller, under its own terms and privacy policy. Android backup, if you turn it on, is also Google's service under your Google account.

We do not sell personal data and do not give it to anyone else, unless the law requires it (for example a court or a public authority).

Transfers outside the EU

Google is based in the USA, so the order details may be processed there. Google is certified under the EU-U.S. Data Privacy Framework, for which the European Commission has adopted an adequacy decision.

Your rights

Under the GDPR you have the right to:

• get confirmation whether we process your personal data, and a copy of it (Art. 15);
• have inaccurate data corrected (Art. 16);
• have your data erased (Art. 17);
• have the processing restricted (Art. 18);
• receive data you gave us in a common machine-readable format (Art. 20);
• object at any time to processing based on our legitimate interest (Art. 21).

Write to admin@cornerlog.app. We answer within one month and free of charge. Your rides you delete yourself, in History or by uninstalling the app; we have no copy of them.

Complaints and changes

If you think we process your personal data unlawfully, you can lodge a complaint with a supervisory authority, in particular in the EU country where you live or work. Our supervisory authority is the Czech Office for Personal Data Protection (Úřad pro ochranu osobních údajů), Pplk. Sochora 27, 170 00 Praha 7, Czech Republic, uoou.gov.cz. We would be glad if you told us first, so that we can put it right.

Changes to this policy are published on this page.