Contrast Checker is an offline WCAG accessibility colour-contrast utility. All contrast calculations run locally on your device — no colour values or data are sent anywhere.
The only data collected is your advertising ID, used by Google AdMob to serve contextual ads. This is standard for ad-supported free apps.
This app uses Google AdMob to display banner and interstitial ads. AdMob may use your device's advertising ID to personalise ads. You can opt out of personalised ads at any time in your device settings (Google Settings → Ads → Opt out of Ads Personalisation on Android).
Users who purchase the Remove Ads in-app purchase see no ads and AdMob is not initialised for their session.
The app stores your recent colour pairs and preferred display settings locally on your device using Android's SharedPreferences. This data never leaves your device.
The Remove Ads one-time purchase is processed entirely by Google Play Billing. We do not see or store your payment details.
This app is not directed at children under 13. We do not knowingly collect data from children.
If we update this policy, we will publish the revised version at this URL. Continued use of the app after changes constitutes acceptance.
Questions? Email us at admin@99ersstudio.com.
Some screens include an optional Send Feedback button. Nothing happens unless you tap it. When you do, the app opens a pre-filled draft in your device's own mail app, addressed to feedback@99ersstudio.com, with the app version and your device's operating-system version included so we can reproduce issues. Nothing is sent automatically — you review the draft, edit it (you may delete the device info), and send it yourself, or simply close it. The app does not collect your email address; if you choose to send the draft, you are emailing us voluntarily, and we will only have what you put in that message. To have a feedback email deleted, email admin@99ersstudio.com.
The controller responsible for data processing in connection with this app is 99ersstudio, LLC (Delaware, USA), represented by Aaron Philipp Vogelsang, 131 Continental Dr, Suite 305, Newark, DE 19713, USA. Contact: admin@99ersstudio.com. (US company — no VAT ID / no EU VAT registration.)
99ersstudio, LLC is established outside the European Union. As our representative in the Union pursuant to Article 27 GDPR we have appointed Prighter EU Rep GmbH, Schellinggasse 3/10, 1010 Vienna, Austria. Data subjects in the EU/EEA may exercise their data protection rights through our representative — online contact: https://app.prighter.com/portal/15694257215.
If you are located in the EU/EEA, you have the rights granted under Articles 15 to 22 GDPR, including access, rectification, erasure, restriction, data portability and objection. You can exercise these rights by emailing admin@99ersstudio.com — or conveniently via our Trust Center: https://app.prighter.com/portal/15694257215.