Privacy Policy

Last updated: 25 August 2026

Who we are

Lingara is operated by Spinning Cat Studios. This policy explains how we collect, use, and protect your information when you use the Lingara mobile app and website at getlingara.com.

Information we collect

  • Account information — email address and display name when you register.
  • Usage data — vocabulary progress, lesson history, and app usage patterns to improve the learning experience.
  • AI tutor conversations — the messages you send to the tutor, the tutor's replies, and a record of how you use the tutor.
  • Payment information — processed securely by Stripe or Apple. We do not store card numbers.
  • Analytics — page views and app events, collected by PostHog. On our website, and in the app before you sign in, these are keyed to a device identifier. Once you sign in, we link them to your account.
  • Support conversations — messages you send via the Crisp chat widget or email are stored by Crisp to help us respond to your enquiries.
  • Early-access sign-ups — if you join the early-access list we store your email address, the language you were reading the site in, and the wording of the consent you agreed to. We keep a salted hash of your IP address to detect abuse, never the address itself.

How we use your information

  • Provide and improve the Lingara learning experience
  • Process subscriptions and payments
  • Send essential account notifications (password resets, billing)
  • Analyse aggregate usage to improve the product
  • Respond to support enquiries
  • Tell you when early access opens, if you asked us to — confirmed opt-in only, so we never email an address that has not confirmed
  • Improve and evaluate the AI used in lessons, exercises and the tutor. This does not apply if you have turned off "Help improve Lingara" in Settings → Privacy & AI.

Third-party services

These third-party services process data on our behalf. Each entry names one service. Each entry says what that service does:

  • Groq — AI model provider. Groq writes tutor replies, in-app AI chat replies, and lesson content. Groq also runs our safety and quality checks. Those checks read every message that you send to the tutor. Those checks also read every reply that the tutor sends to you.
  • OpenAI — AI model provider. OpenAI writes vocabulary and lesson content. OpenAI writes tutor replies. OpenAI grades your exercise answers. OpenAI compares the lesson topic you type with lesson plans we already hold. OpenAI also checks generated pictures for safety.
  • Doubleword — AI model provider. Doubleword writes in-app AI chat replies and lesson content.
  • Runware — picture generation. We send short descriptions of vocabulary words and lesson scenes to Runware. We create some of those descriptions from the lesson topic you type.
  • Stripe — payment processing
  • Apple — iOS in-app purchases, sign-in, and app checks. If you use Sign in with Apple, Apple confirms your identity. Apple also confirms that your copy of the iOS app is genuine.
  • Google — sign-in and app checks. If you use Sign in with Google, Google confirms your identity. Google also confirms that your copy of the Android app is genuine.
  • SendGrid (Twilio) — sending account and early-access emails
  • Crisp — live chat and support inbox
  • PostHog — product analytics
  • Sentry — error monitoring
  • DigitalOcean — hosting, file storage, and backups. Our servers and our database run on DigitalOcean. We store lesson pictures and audio files on DigitalOcean. We also store a nightly encrypted backup of our database on DigitalOcean.

Data retention

We retain your account data for as long as your account is active. You can delete your account and its associated data at any time — in the app under Settings → Account, or by contacting support@getlingara.com.

We also back up our database every night. Each backup is encrypted. We delete each backup 7 days after we make it. Data you delete can stay in a backup for up to 7 days after you delete it.

Your rights

You may request access to, correction of, or deletion of your personal data by emailing support@getlingara.com.

How to delete your account and data

Contact

Questions about this policy? Email support@getlingara.com.

The AI tutor and your conversations

When you use the AI tutor, we store the conversation on our servers. We link the conversation to your account. We store the messages you send, the tutor's replies, and the tutor settings you were using at the time. If our safety filters block a reply, we do not store that reply. We still store your message, and we store the fact that the reply was blocked.

The app stores your conversations on your device as well. If you delete a conversation in the app, the app removes it from your device. The app also keeps only your 20 most recent conversations on your device. Deleting a conversation does not delete our copy. Removing older conversations from your device does not delete our copy either.

We keep each message and each reply for 180 days after it is sent. We then delete them automatically. We also delete them when you delete your account. One exception applies to training exports. We sometimes place a copy of a message or a reply into a training export. The 180-day deletion does not remove that copy. We delete each export file within 12 months of the date we made it.

We also record how you use the tutor. We record which parts of a reply you opened, which passages you replayed, which suggested prompts you tapped, when you turned on the microphone, when you changed the tutor's settings, and when you opened or deleted a conversation. We record only a fixed list of actions of this kind. These records never contain anything you type. They never contain anything you say, and they never contain your voice. We keep these records for 180 days after each action. We delete them when you delete your account.

We store your conversations and your usage records whether or not you opt out. Turning off "Help improve Lingara" (Settings → Privacy & AI) does not change that. If you turn that setting off, we stop using your conversations and your usage records to train or improve our AI models. This takes effect within 24 hours. After that, we exclude them from every training export.

AI training and your data

We may use your learning activity to improve our AI models. This includes your exercise answers, your messages to the in-app AI chat, and your AI tutor conversations. It does not include the messages you send to our support team. You can opt out at any time by turning off "Help improve Lingara" in Settings → Privacy & AI. If you opt out, we exclude your data from every training export within 24 hours.

EU AI Act disclosure

In accordance with EU AI Act Article 50, we inform you that Lingara uses artificial intelligence to generate lesson content, vocabulary, and tutor responses. AI-generated content may occasionally contain errors. You can learn more about our use of AI, including what data is processed and your transparency rights, on our AI Transparency page.

This policy is written in English. Translations are provided for convenience; in case of conflict, the English version prevails.