Last updated: October 23, 2026
Dynn is made by Felipe Martinez ("I", "me"). This policy explains what happens to your information when you use the Dynn app for iPhone and iPad.
Everything you add to Dynn stays on your device: rankings, Rotation and Backlog, genres, notes, covers you pick and your stones. It's included in your device's normal iCloud or iTunes backups, which Apple handles under its own privacy policy. You can export or delete it from Settings at any time. Deleting the app deletes it too.
Dynn sends only what each feature needs to work:
Looking up titles and covers. When you search for or add an item, or fill in its details automatically, Dynn sends the search text (for example, a title or an artist's name) to public catalogues and receives information and artwork back. The catalogues are:
These requests don't include your name or any identifier for you. Dynn's relay server passes TMDB and IGDB requests through without logging or keeping them.
AI features (optional). If you add your own API key for an AI provider (Groq, Anthropic, OpenAI or Google Gemini), Dynn sends that provider the prompt it needs: for example, the titles and genres in a list you ask about. The request goes directly from your device to the provider, under your key and that provider's own privacy policy. Your keys are kept in your device's Keychain and are never sent to me.
Sharing stones nearby. When you choose to share a stone, Dynn uses your local network to find other Dynn devices near you. The stone you send includes:
The anonymous ID is a random identifier kept in your iCloud Keychain. It lets a friend's app recognise later stones as coming from you. Nothing is sent until you choose to share.
Sharing a stone by link. When you send a stone as a link, Dynn uploads that stone (the same details as above, without your avatar) to Dynn's server, which gives back a short link. Anyone with the link can open the stone. It is deleted automatically after 30 days. Nothing is uploaded until you choose to send a link.
Usage data. Dynn counts which features get used (for example, opening the Genre graph, finishing a Refine session or seeing the Dynn+ screen), how many items your lists hold and what share of them have details like a cover, genre or year, and sends those counts to PostHog, an analytics service. Each event carries a random ID made on your device, the app version and your iOS version. It never includes the titles you rank, your name or anything that identifies you, and it isn't used for advertising or tracking. When you use Explore, Dynn records which AI provider and model answered, how long it took and how many tokens it used, never the prompt or the answer. It's on unless you turn it off on the app's first screen, and you can turn it off anytime in Settings > About > Share usage data.
Dynn+ subscriptions are processed by Apple. I don't receive your payment details. The app only checks with Apple whether your subscription is active.
Dynn may ask for:
Each one is used only for that feature, and you can turn it off in iOS Settings.
Dynn isn't directed at children under 13, and I don't knowingly collect information from anyone.
If this policy changes, the date at the top will change, and significant changes will be noted in the app's release notes.
Questions: support@dynn.app