Privacy Policy

Who we are

ByteLingual is an iOS language learning app. References to "we", "us", or "our" in this policy refer to ByteLingual. You can reach us at the contact details at the bottom of this page.

What data we collect

We collect data through three channels:

1. Analytics (PostHog)
When you use the ByteLingual app, we collect anonymised usage events to understand how the app is being used. This includes things like which collections you activate, how often you open the app, and whether you add a widget to your home or lock screen. This data is tied to a randomly generated device identifier — not your name, email address, or Apple ID. We use PostHog (EU servers, posthog.com) to process this data.

2. Email address (bytelingual.com website only)
If you submit your email address through the early access form on our website, we store it securely using Brevo (brevo.com), an email marketing platform. We use this only to contact you about ByteLingual — beta access, updates, and launch news. We do not share this with third parties or use it for any other purpose. Brevo processes this data on EU-based servers in compliance with GDPR. You can ask us to delete it at any time.

3. reCAPTCHA (bytelingual.com website only)
When you submit the early access form on our website, we use Google reCAPTCHA v3 to protect against spam and automated submissions. reCAPTCHA analyses your behaviour on the page (such as mouse movements and browsing patterns) and assigns a score. No personally identifiable information is collected by reCAPTCHA. This service is governed by Google's Privacy Policy and Terms of Service.

4. Apple analytics
If you have opted in to sharing analytics with developers in your iPhone settings, Apple may share aggregated, anonymised data about your usage with us through App Store Connect. We have no control over this data collection — it is governed by Apple's privacy policy.

What we do not collect

• Your name, Apple ID, or email address from within the app
• Your location
• Any content you create (custom collections and pairs are stored locally on your device only)
• Any data for advertising or profiling purposes
• Any data sold or shared with third parties for commercial purposes

Where your data is stored

Analytics data collected via PostHog is stored on PostHog's EU-based servers in Frankfurt, Germany, in compliance with GDPR. Email addresses collected via the website are stored and processed by Brevo on EU-based servers, in compliance with GDPR. All language pairs, collections, and settings you create or change within the app are stored locally on your device and are never transmitted to us.

Legal basis for processing (GDPR)

For users in the UK and European Economic Area, our legal basis for processing analytics data is legitimate interests — specifically, our interest in understanding how the app is used so we can improve it. Our legal basis for processing email addresses is consent — you provided your email voluntarily. You can withdraw consent at any time by contacting us.

Your rights

Depending on where you are located, you may have the right to:

• Access the personal data we hold about you
• Request that we correct or delete your data
• Object to or restrict our processing of your data
• Request a copy of your data in a portable format
• Lodge a complaint with your local data protection authority

To exercise any of these rights, please contact us using the details below. For UK users, the relevant authority is the Information Commissioner's Office (ico.org.uk).

Children's privacy

ByteLingual does not knowingly collect personal information from children under 13. The analytics data we collect is anonymised and not linked to any individual identity. If you believe a child has provided us with personal information, please contact us and we will delete it promptly.

Changes to this policy

We may update this policy as the app evolves. If we make material changes we will update the date at the top of this page. Continued use of the app after changes are posted constitutes acceptance of the updated policy.