Last updated: November 7, 2026
TuneTrend (the "app", "we", "us") is a small, independently-run project that shows trending YouTube music and videos by country, available as a website and as Android/iOS apps. This page explains what data we collect, why, and how you're in control of it. Browsing charts and searching them never requires a login. Signing in with Google is optional and only needed to create playlists or to search further on YouTube.
Usage analytics (Firebase Analytics on mobile, Vercel Analytics on web): anonymous, aggregated events like which screen you viewed, which video you played, or which category you filtered by. These are not tied to your name or contact details.
Crash and performance data (Firebase Crashlytics and Firebase Performance Monitoring, mobile only): if the app crashes or runs slowly, we automatically receive a stack trace and basic device/OS info so we can fix the bug.
Push notification token (mobile only, if you allow notifications): a device token used to send you announcements. We only send broadcast messages to everyone subscribed — we never target you individually or know who a token belongs to.
Contact form submissions: if you use the in-app Contact form, we receive whatever you type (your message, and an email or Thai phone number so we can reply). This is the only place TuneTrend asks for anything resembling personal contact information, and it's entirely optional.
IP address (server-side, transient): used only to rate-limit abuse of the contact form and our API. We don't log or store IP addresses long-term.
Search terms (no sign-in needed): when you search for a song, we save the search term, the country and the latest results for that term to show on the public "Most Searched" tab. A term only appears there once at least 2 people have searched for it within 7 days, so private searches stay private. To count distinct people, we keep a one-way hash of your IP address (it can't be turned back into the IP) with each search for 7 days, then delete it. Search terms are never linked to your account.
Local preferences: your theme (light/dark), language, and whether you've seen the onboarding tour or install prompt are saved in your browser's local storage or your device's app storage. This never leaves your device.
If you choose to sign in with Google, we receive and store your Google account name, email address and profile picture URL, plus an internal account ID and the time you last signed in. We never get your Google password and never ask for access to your YouTube account — nothing is ever posted to YouTube on your behalf.
Playlists you create are stored on TuneTrend's own server: each playlist's name and, for each saved song, its YouTube video ID, title, channel name and thumbnail link. Playlists are private to your account and are not shared with anyone.
On the web, your sign-in session is kept in a secure, HTTP-only cookie that expires after 30 days. To limit costs, we also count how many YouTube searches each account makes per day.
When you play a song from the search results page, we count that play (video ID, country and search term — not who you are) to build the Most Searched chart.
Every video on TuneTrend plays through YouTube's official embedded player (iframe on web, the YouTube IFrame Player API on mobile). When you watch a video, your interaction with that player is subject to Google/YouTube's own Privacy Policy, not just ours. Views, watch time, and ad revenue are counted normally for the video's creator — exactly as if you watched it on youtube.com. TuneTrend never downloads, rehosts, or modifies anyone's video content.
Google Firebase (Analytics, Crashlytics, Cloud Messaging, Remote Config, Performance Monitoring) — mobile app infrastructure.
YouTube / Google — video playback and chart data (via the YouTube Data API).
Google Sign-In — optional sign-in; shares your name, email and profile picture with us.
Vercel (Analytics, Speed Insights, hosting) — web app infrastructure.
Resend — delivers the email notification when you submit the Contact form.
Upstash — short-lived rate-limiting counters keyed by IP address.
Google Play Store / Apple App Store — app distribution, subject to their own privacy terms for anything handled at the OS/store level.
TuneTrend shows no advertising and includes no ad SDKs or ad trackers. We do not sell, rent, or trade your data to anyone, for any reason.
Contact form messages are kept only as long as needed to respond to you. Analytics, crash, and performance data follow Firebase's and Vercel's own default retention periods. Rate-limiting counters expire automatically within minutes. Your account details and playlists are kept until you delete your account.
TuneTrend is not directed at children under 13, and we do not knowingly collect personal information from children. If you believe a child has provided us information through the Contact form, please reach out and we'll remove it.
You can disable push notifications at any time in your device's system settings. You can clear your saved theme/language preferences by clearing your browser's site data or the app's storage.
Deleting your account: sign in, open the profile menu (your picture at the top right) and choose "Delete account". Your account and all of your playlists are permanently deleted right away. Signing out only ends the session on that device. If you can't sign in any more, ask us through the Contact form and we'll delete it for you, along with anything you typed into that form.
If this policy changes, we'll update the date at the top of this page. Continued use of TuneTrend after a change means you accept the updated policy.
Questions about this policy or your data? Use the Contact button on the About page — it reaches the developer directly.