Privacy Policy

Last updated: July 6, 2026

Zemer ("we", "us") provides a free Jewish music streaming app and this website, zemer.io. This policy explains what information we collect and how we use it. The short version: we collect as little as possible, we never sell data, and the app works without an account.

Information we collect on this website

• Analytics: We use Umami, a privacy-focused analytics tool, to count page visits. It does not use cookies and does not collect personal information or track you across other sites.
• Contact form: If you contact us, we receive the name, email address, and message you choose to send. We use it only to respond to you.

Information collected by the app

The Zemer Android app does not require an account — most features work without signing in, and your library, playlists, listening and search history, and downloads are stored only on your device. The app collects or transmits the following:

• Music recognition (microphone): When you use "Recognize music," the app records a short audio sample, converts it into an acoustic fingerprint, and sends that fingerprint to Apple's Shazam service to identify the song. The microphone is used only during recognition, and the raw recording is not stored.
• Optional settings sync: To keep your content-filter settings (for example KidZone / parental controls) consistent across your devices, you can enable sync. This creates an anonymous account in Google Firebase — it does not use, request, or reveal your Google account, name, or email address. We store your content-filter settings and basic device information (device name, manufacturer, model, Android and app version) tied only to that anonymous identifier. While signed in to that anonymous account, these settings are locked from being changed on your device.
• Usage analytics: To improve search results and build Zemer's own recommendations, the app sends anonymous usage data to Zemer's own analytics server: a randomly generated install identifier, the app version, search terms, plays (which track, how many seconds were listened, and where playback started), search-result taps, and library actions such as favorites, downloads, playlist additions, and shares, each with a timestamp. This data is not linked to any account or person — we do not collect names, emails, contacts, location, or advertising identifiers, and our server does not store IP addresses. It is sent to and stored on Zemer's own server, not shared with any third party.
• Crash & diagnostics: We use Google Firebase Crashlytics for crash and error reporting. Reports include device information (such as model and Android version) and recent technical logs from the app, and are used only to diagnose and fix problems.
• Streaming: To play music, the app sends playback requests to YouTube / Google using a session identifier.
• Downloads: We count app downloads in aggregate; this does not identify you personally.

What we don't do

• We do not sell or rent your information to anyone.
• We do not show advertisements or use advertising trackers.
• We do not collect more information than we need to operate Zemer.

Third-party services

The website and app rely on a small number of service providers to function, including Cloudflare (hosting and content delivery), Google Firebase (catalog database, optional sign-in, settings sync, and crash reporting), YouTube / Google (music streaming), Apple's Shazam service (song recognition), and Google Fonts. Each receives only the data needed to deliver its service. See Google's Privacy Policy and Apple's Privacy Policy.

Children

Zemer is intended for a general audience age 13 and older and is not directed to children under 13. KidZone is a parental curation tool for use under adult supervision.

Data retention and your rights

Data stored on your device is removed when you clear the app's data or uninstall the app. Contact messages are kept only as long as needed to handle your request. To delete information synced to your account (such as your settings and device list), or any other information we hold about you, email support@zemer.io and we will take care of it. Anonymous usage analytics are not linked to any account or identity, so we have no way to locate or delete an individual's records on request.

Changes to this policy

If we change this policy, we will update this page and the date above.

Contact

Questions about privacy? Reach us through the contact page or email support@zemer.io.