Night Diaries – Privacy Policy
Last updated: 16 October 2026
Night Diaries is a sleep talk recorder made by Michael Kirby, an independent developer in Australia.
Your recordings stay on your phone
Night Diaries records sound only after you press Start. Recordings, sound levels and saved moments are stored only on your device. They are never uploaded to us or anyone else. Deleting a recording in the app removes it, and deleting the app removes all recordings.
How talking is detected
To find the moments when someone talks in their sleep, Night Diaries analyses the recording on your phone using Apple's built-in sound recognition. This happens entirely on your device. No audio is sent anywhere for analysis.
What we don't collect
We don't have accounts or logins. We don't collect your name, email, location or contacts. We don't use advertising or analytics.
Purchases
Night Diaries offers a one-time purchase to unlock the app after the free trial. Payments are handled by Apple (App Store) or Google (Google Play); we never see your card or payment details. We use RevenueCat to check whether the app has been unlocked. RevenueCat receives an anonymous ID created by the app, plus purchase details such as the product and date, and no audio or personal information. RevenueCat's privacy policy is at revenuecat.com/privacy.
Microphone and notifications
The microphone is used only to record sound while you sleep, after you press Start. Notifications are local reminders and summaries created on your phone.
Consent
Only record people who know and agree to be recorded.
Children
Night Diaries is not directed at children under 13.
Changes
If this policy changes, the updated version will be posted on this page with a new date.
Contact
nightdiaries@hotmail.com