Feybo — Privacy Policy

Last updated: 13 October 2026

Feybo (formerly Luno) is a bedtime-story app for children aged 3 to 10, set up and used by a parent or guardian. We keep the data we handle to what the app needs to work, to understand how it is used, and to measure our advertising. This policy explains exactly what that is.

What you tell the app

• Child's first name or nickname — goes into the stories. A nickname works just as well as a real name.
• Child's age (3–10) — adapts the vocabulary and the length of each page.
• Story choices — themes, story length, narrator voice, an optional lesson, and the stories you save to your library.
• Onboarding answers — how bedtime usually goes (for example "a little scared of the dark"), an optional sidekick (a cuddly toy, cat, dog or friend, and its name), and your usual story time. They shape the first story and the story-time reminder.

We do not ask for or collect email addresses, phone numbers, contacts, photos, or location. There are no accounts and no ads in the app.

Where this data lives

Profiles, answers, preferences and saved stories (including their narration audio) are stored locally on your device. We do not keep a copy of them.

How stories are made

To write and narrate a story, the app sends a request through a small relay server we run on Cloudflare. The relay holds our API keys and forwards the request to the providers below; it does not store the content of requests. Cloudflare briefly processes your IP address to deliver the request and to limit abuse (rate limiting).

• Anthropic (Claude API) — writes the story. It receives the child's first name or nickname, age, chosen themes, length and lesson, and, for the first story, the onboarding answers (bedtime situation and sidekick). See Anthropic's Privacy Policy.
• OpenAI (Text-to-Speech API) — reads the story aloud. It receives the story text, which contains the child's name, and the chosen voice. See OpenAI's Privacy Policy.

Under their API terms, Anthropic and OpenAI do not use this data to train their models, and process it according to their own retention policies.

Subscriptions

Feybo Premium is sold through the Apple App Store and managed with RevenueCat, which receives an anonymous app user ID, your purchase and subscription history, and device identifiers (the IDFV, and the IDFA only if you allow tracking — see below). We never see your payment details. See RevenueCat's Privacy Policy and Apple's Privacy Policy.

Analytics and advertising measurement

• PostHog (EU cloud) — anonymous usage events, such as finishing onboarding, a story being generated or played, or the paywall being shown, with technical details (app version, device model, OS) and an approximate location (country and city) that PostHog derives from your IP address. Events never include the child's name, story text or story titles. See PostHog's Privacy Policy.
• Tenjin — tells us which advertising campaign (for example on TikTok) led to an install, using install and session events and device identifiers. See Tenjin's Privacy Policy.

Tracking permission. After your first story, iOS asks whether Feybo may track your activity across other companies' apps and websites. Only if you allow it do Tenjin and RevenueCat receive your device's advertising identifier (IDFA). You can change this at any time in iOS Settings → Privacy & Security → Tracking. Refusing changes nothing in the app.

Notifications

If you allow notifications, the app schedules local reminders on your device: your story-time reminder, and a reminder two days before a free trial ends. They are created on the device; no server sends them and their content is not shared with anyone. You can turn them off in the app's Settings or in iOS Settings.

Children's privacy

Feybo is meant to be used by children together with a parent or guardian, who sets it up and manages the subscription. The only information about a child the app handles is what the parent enters (a first name or nickname, an age and the story choices above). It is used only to create the stories and is never used for advertising. The analytics and advertising measurement above concern the device and the parent's use of the app, not the child, and never include the child's name.

Data retention

Local data stays on your device until you delete the profile or story, or uninstall the app. Analytics events are kept by PostHog for a limited period for statistics. Requests to Anthropic and OpenAI are processed under their own retention policies.

Your choices and rights

• Use a nickname instead of a real name.
• Edit or delete any profile and any saved story from inside the app; uninstall the app to remove all local data.
• Refuse or withdraw the tracking permission in iOS Settings.
• Turn notifications off at any time.
• Manage or cancel a subscription from your Apple ID account settings.
• Depending on where you live (for example in the EU or the UK), you can ask us to access or delete data linked to your device; write to us at the address below.

Changes to this policy

If this policy changes, we'll update it here and change the date at the top of this page.

Contact

For any privacy question, write to lunoapp.support@gmail.com.