Privacy Policy

Effective 24 October 2026

Your bikes stay on your iPhone.

TireDial has no account and no backend. Your weight, bikes, presets and history are stored only on your device. To improve the app, it sends anonymous usage statistics and crash reports — never your weight, bike names or anything you type. TireDial does not access your location, contacts, Apple Health, Strava or your advertising identifier. Purchases are processed by Apple; TireDial only learns whether Pro is unlocked.

This policy explains the details for the TireDial iPhone app and the website tiredial.com.

1. Who is responsible

The controller under the EU General Data Protection Regulation (GDPR) is:

2. The TireDial app

TireDial has no user accounts and no server of its own, and it contains no advertising or tracking software.

The information you enter — rider weight, bike and tire details, ride presets, saved pressures and your settings — is stored only locally on your iPhone and is used solely to calculate tire pressure recommendations on your device. It is never sent to us or to anyone else. Deleting the app deletes this data.

Anonymous usage statistics and crash reports. To understand how TireDial is used and to find and fix errors, the app sends usage statistics and crash reports to the analytics service PostHog:

• which parts of the app you use, for example opening the calculator, calculating a pressure, saving a bike or viewing the Pro offer;
• the general calculator settings involved: bike type, tire width, tire setup, surface, conditions and pressure unit — never your rider weight, bike or preset names, or anything you type;
• in-app purchase events: product, price and currency (no payment details);
• crash and error reports: technical information about the error and the state of the app;
• technical data: app version, iOS version, device model, language, time zone, and a random identifier the app generates on your device.

The identifier is not linked to your name, Apple Account, email address or advertising identifier, and we do not combine it with other data. Deleting the app deletes it. PostHog receives your device's IP address when data is sent; it is used only to derive an approximate location (country and city) and is not stored.

The provider is PostHog Inc. (USA). The data is stored on PostHog's servers in the EU (Frankfurt, Germany). PostHog processes it on our behalf under a data processing agreement; any access from the USA is covered by the EU Standard Contractual Clauses. The legal basis is our legitimate interest in improving TireDial and keeping it stable (Art. 6(1)(f) GDPR). We keep the data only as long as we need it for these purposes.

TireDial requests no device permissions. It does not access your location, contacts, photos, camera, microphone, Apple Health, Strava or your advertising identifier, and it does not track you across apps or websites.

Device backups. If you use iCloud Backup or back up your iPhone to a computer, iOS may include TireDial's local data in those backups. Backups are managed by Apple and by you, under Apple's terms, and are not accessible to us.

Crash reports. If you have chosen in your iPhone settings to share analytics with app developers, Apple may provide us with anonymous crash reports and aggregated usage statistics. These do not identify you and do not contain the data you enter in TireDial.

3. In-app purchase (TireDial Pro)

TireDial Pro is purchased through Apple's App Store. Apple processes the payment and all related data under the Apple Privacy Policy. We never receive your name, email address or payment details. The app only checks with Apple, on your device, whether TireDial Pro is unlocked for your Apple Account.

4. The website tiredial.com

This website uses no external fonts. The only external script is the cookieless visitor statistics described below.

When you visit the website, our hosting provider automatically processes technical data that your browser sends: IP address, date and time of the request, the page requested, referrer URL and browser/operating system information (server log files). This is necessary to deliver the website and keep it secure. The legal basis is our legitimate interest in operating a secure website (Art. 6(1)(f) GDPR). Log files are deleted after a short period unless they are needed to investigate a security incident.

Cookieless visitor statistics. To see how many people visit the website, which pages they read and how they found it, the website uses PostHog, the same analytics service as the app (see section 2), in a cookieless mode. It doesn't set cookies and stores nothing on your device (no local or session storage), so there is no cookie banner. The PostHog script is loaded from PostHog's servers in the EU.

What is sent: the page you visit and how long you stay, the referring website or campaign link (UTM parameters) that brought you here, whether you tapped an App Store link (and where on the page), and browser, operating system, device type, screen size and language. Your IP address is used by PostHog only to compute a daily-changing anonymous hash, so that repeat page views on the same day are counted as one visitor, and to derive an approximate country; the IP address itself is not stored. We cannot identify you from this data, and it is not combined with the app's usage statistics or with other data.

PostHog processes this data on our behalf under a data processing agreement, on servers in the EU (Frankfurt, Germany), as described in section 2. The legal basis is our legitimate interest in understanding how the website is used and improving it (Art. 6(1)(f) GDPR). The data is deleted after 2 years at the latest. You can object at any time, for example by using a content or tracker blocker, which prevents the statistics from being sent.

5. Contacting us

If you email us, we process your email address and the content of your message to answer your request (Art. 6(1)(b) and (f) GDPR). We delete this correspondence once it is no longer needed, unless legal retention obligations apply.

6. Your rights

Under the GDPR you have the right to access, rectification, erasure, restriction of processing, data portability and to object to processing of your personal data. Because the app stores your data only on your device, you can view, change or delete it at any time in the app or by deleting the app. Usage statistics are stored only under a random identifier, so we generally cannot tell which data belongs to you (Art. 11 GDPR); deleting the app resets the identifier. You can object to the processing of usage statistics (Art. 21 GDPR) by contacting us. For requests relating to emails or the website, contact hello@tiredial.com.

You also have the right to lodge a complaint with a supervisory authority. In Austria this is the Datenschutzbehörde, Barichgasse 40–42, 1030 Wien, www.dsb.gv.at.

7. Children

TireDial is not directed at children and does not knowingly collect personal data from children.

8. Changes

We may update this policy, for example if the app gains new features. The current version is always available at tiredial.com/privacy.html. If a change affects how data is handled, we will describe it here before it takes effect.