Privacy Policy:BrainFog

Privacy Policy for BrainFogLast Updated: August 2026BrainFog ("we", "our", or "us") respects your privacy and is committed to protecting your personal information. This Privacy Policy explains how we handle your information when you use our mobile application BrainFog.1. Information We CollectWhen you use BrainFog, the app works with:- Voice recordings and text entries you voluntarily add to the app.
- Questions you ask your diary, and the diary text needed to answer them.
- Basic device information (such as device type and operating system) needed for the app to function.We do not use analytics or tracking tools, and we do not collect data about how you use the app.2. How We Use Your InformationWe use your information only to:- Provide the core functionality of the app (recording, transcribing, saving, searching your entries, answering your diary questions, and reading entries aloud).
- Respond to your support requests.3. AI Processing & Your ConsentSome features of BrainFog are powered by artificial intelligence. When you use these features, the following data is sent securely to our server and to our AI provider, OpenAI:- Transcription: your voice recording is sent to OpenAI to be converted into text.
- Ask your diary: your question and the relevant diary text are sent to OpenAI to generate an answer.
- Read aloud: entry text is sent to OpenAI (or Google, for some languages) to generate spoken audio.This data is processed only for the moment needed to fulfill your request and is then discarded. It is never stored on our servers, never used for advertising, and never used to train AI models. OpenAI processes this data under its API data protection terms, which provide protections equal to those described in this policy, including no training on your data.The app asks for your explicit permission before any data is sent for AI processing. The first time you record, you will see a consent screen explaining exactly what is shared and with whom. If you do not agree, no data is sent.4. Data Storage & SecurityYour diary entries are stored locally on your device. We do not operate servers that store your diary content. All data sent for AI processing travels over encrypted connections (HTTPS). We do not sell or share your personal data with third parties for marketing purposes.5. Third Party ServicesBrainFog uses the following third party services to provide core features:- OpenAI: speech-to-text transcription, diary answers, and text-to-speech, as described in Section 3.
- Google Cloud Text-to-Speech: spoken audio for some non-English languages.
- RevenueCat: subscription management (see Section 6).These services process your data only to fulfill your request and maintain their own privacy policies with equivalent protections.6. Payments & SubscriptionsBrainFog offers auto-renewing subscriptions. Payments are processed by Apple's App Store or Google Play. We never see or store your payment card details. We use RevenueCat, a subscription management service, to verify your subscription status; it receives anonymous purchase information (such as transaction dates and subscription status) but never your diary entries or recordings. You can manage or cancel your subscription anytime in your App Store or Google Play account settings.7. Your RightsYour entries belong to you. You can export a full backup of your data or delete all your entries at any time directly from within the app (About > Your Data / Danger Zone). Because your entries are stored only on your device, deleting them removes them completely; there is no server copy. If you have any questions or requests regarding your data, please contact us.8. Children's PrivacyBrainFog is not intended for children under the age of 13.9. Changes to This PolicyWe may update this Privacy Policy from time to time. We will notify users of any material changes by updating the "Last Updated" date.10. Contact UsIf you have any questions about this Privacy Policy, please contact us at: [email protected]