1. Introduction
TubeNotes ("we", "our", or "us"), developed by kyusung studio, is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard information when you use the TubeNotes mobile application.
2. Information We Collect
2.1 Anonymous User Identifier
We assign each user an anonymous ID (generated by Firebase Anonymous Authentication) to manage usage quotas and app features. This ID is not linked to your real identity, email address, or personal information.
2.2 YouTube URLs
When you request a summary, the YouTube video URL you provide is transmitted to our backend servers (Firebase Cloud Functions). The URL is used solely to:
- Retrieve the video's publicly available transcript/captions
- If no captions are available and you explicitly consent, extract the video's audio stream and transcribe it using OpenAI's Whisper API
- Process and generate an AI summary
YouTube URLs are not permanently stored beyond what is necessary to fulfill the summary request and maintain your local summary history (stored on your device via Hive). Audio data extracted for Whisper transcription is processed in-memory only and is not stored on our servers.
2.3 Usage Data
We collect anonymized usage analytics via Firebase Analytics to understand how users interact with the app and improve features. This data does not identify you personally.
2.4 Crash Reports
Firebase Crashlytics automatically collects anonymized crash reports to help us identify and fix bugs.
3. Third-Party Services
3.1 OpenAI
Video transcripts are sent to OpenAI's API (GPT-4) to generate summaries. For videos without captions, the audio stream may also be sent to OpenAI's Whisper API for transcription, only with your explicit consent. OpenAI processes this data according to their Privacy Policy. We do not send any personal user information to OpenAI — only the publicly available video content.
3.2 Google AdMob
TubeNotes displays advertising through Google AdMob, including:
- Banner ads — displayed within the app interface
- Rewarded ads — shown when you opt in to earn additional summary credits
AdMob may collect device identifiers and usage data to serve personalized ads. You can opt out of personalized advertising in your device settings. See Google's Privacy Policy.
3.3 Firebase (Google)
We use Firebase services (Authentication, Firestore, Cloud Functions, Analytics, Crashlytics) provided by Google. Data is processed in accordance with Google's Privacy Policy.
3.4 YouTube Data API
TubeNotes uses the YouTube Data API to retrieve video transcripts. Your use of TubeNotes is also subject to YouTube's Terms of Service. TubeNotes is not affiliated with or endorsed by YouTube or Google LLC.
4. Data Storage
Your summary history is stored locally on your device using Hive (an encrypted local database). We do not upload your summary content to our servers without your action. Anonymous usage statistics are stored in Firebase in accordance with Google's data retention policies.
5. Data Retention
Anonymous user IDs and usage statistics are retained for up to 24 months. You may delete your local data at any time by clearing the app's data in your device settings or uninstalling the app.
6. Children's Privacy
TubeNotes is not intended for children under 13 years of age. We do not knowingly collect personal information from children under 13. If you believe we have inadvertently collected such information, please contact us immediately.
7. Your Rights
Depending on your location, you may have the right to:
- Request access to your data
- Request deletion of your data
- Opt out of analytics collection (via device settings)
- Opt out of personalized advertising (via device settings)
To exercise these rights, contact us at contact@leekyusung.kr.
8. Security
We implement appropriate technical and organizational measures to protect your information against unauthorized access, alteration, or disclosure. All data transmissions use HTTPS encryption.
9. Changes to This Policy
We may update this Privacy Policy from time to time. We will notify you of significant changes by updating the "Last updated" date at the top of this page. Continued use of the app after changes constitutes acceptance of the updated policy.
Appendix. Website Cookies and Visit Analytics
Unlike the other sections, which describe the app, this section applies only to the website (the domain serving this page).
- What we collect — pages visited, referral information (UTM parameters), approximate location (country and city level), device and browser type, screen size, and whether a store link was clicked. The identifier stored in cookies is a browser-level online identifier and may qualify as personal information; however, we do not collect your name, email address, phone number, or any other directly identifying information, and we do not use this identifier to single out any individual.
- Why we collect it — solely to understand how visitors reach this site so that we can improve it. It is never used for advertising or profiling.
- Tool and cookies — Google Analytics 4 (Google LLC), which stores cookies (
_ga,_ga_*) in your browser to distinguish browsers. These cookies last for up to 2 years, and you can delete them at any time using your browser's cookie controls. - Retention — Google Analytics event data is retained for up to 14 months and then deleted automatically. Your consent choice and referral values are stored only in your own browser and are never sent to our servers.
- Outsourced processing and international transfer — the statistics above are processed by a processor acting within the scope of our instructions, which constitutes an overseas transfer for outsourced processing; the following is disclosed under Article 28-8 of the Korean Personal Information Protection Act. Recipient: Google LLC (1600 Amphitheatre Parkway, Mountain View, CA, USA; contact via the Google Privacy Policy). Country of transfer: the United States. Timing and method of transfer: transmitted over the network via cookies from time to time as you use the website. Items transferred: as listed under "What we collect" above. Recipient's purpose of use: generating and analyzing visit statistics for this website, within the scope of our instructions. Recipient's retention period: as stated under "Retention" above. You may refuse this transfer as described under "How to consent, refuse, or withdraw" below, with no disadvantage whatsoever in using the website. We do not provide the data to any other third party.
- How to consent, refuse, or withdraw — choose Decline on the banner shown on your first visit and Google Analytics is never loaded; the site remains fully usable. Even after accepting, you can withdraw your consent at any time via Cookie settings; when you withdraw (decline), the related cookies are deleted. As an additional option, you can also remove the cookies by clearing cookies and site data in your browser.
The referral tags (UTM) appended to store buttons do not identify you, are held only for the current browser session, and work regardless of your cookie choice.
10. Contact Us
If you have any questions about this Privacy Policy, please contact us:
- Email: contact@leekyusung.kr
- Website: video-note.leekyusung.kr