Privacy Policy

SleepTrack Audio ("we," "us," or the "App") is a privacy-first Android application that helps you track your sleep patterns and media listening habits (e.g. audiobooks and podcasts) to provide personalized "resume" recommendations. This Privacy Policy describes what information the App collects, how it uses that information, how it is stored and protected, and your rights regarding your data. Our fundamental principle is that all personal data is processed locally on your device – we do not send your sleep or audio history to our servers. By using SleepTrack Audio, you agree to the practices described in this Privacy Policy.

Information We Collect and Process

SleepTrack Audio is designed to collect only the information necessary for its core functionality. All data is stored locally on your device. The categories of data we handle include:

Sleep Data (Health Connect)

If you grant permission, the App integrates with Google Health Connect to read your recorded sleep sessions from connected sources (for example, any fitness tracker or smartwatch that saves sleep data to Health Connect). This includes data such as your sleep session start and end times, and may include additional sleep information (e.g. sleep stage breakdowns or sleep quality confidence scores, if provided by your device). We use this data solely to detect when you fell asleep and woke up. We do not write or modify any data in Health Connect, and we only access the specific sleep information you have allowed.

Media Playback Data

The App monitors media playback on your device via a notification listener service. In practice, SleepTrack Audio can detect when you are playing audio (for example, from Spotify, Audible, podcast players, etc.) and gather minimal metadata about the playback. This metadata includes information like the app's package name, the title of the audiobook or podcast episode, the playback position and timestamp, and the duration/progress of the media. No actual audio content is ever recorded or saved – we capture only playback status and metadata, not the audio itself.

User Tags, Bookmarks, and Notes

You have the option to annotate your listening or sleep history with personal notes, tags, or bookmarks. Any such user-generated annotations are stored locally as part of your app data. They exist solely for your personal use and to help you organize and recall information. We do not transmit your notes or tags anywhere outside the device.

User Preferences and Settings

The App stores your preferences and settings on your device (using Android's secure storage mechanisms). This includes configurations such as whether sleep tracking/monitoring is enabled, your typical sleep hours, notification and reminder settings, sleep timer choices, and other in-app toggles.

Usage Analytics and Crash Logs (Optional, Opt-In)

By default, SleepTrack Audio does not send any analytics data or crash reports to any server. However, we provide opt-in options that you may explicitly enable in the App's Settings → Privacy & Analytics section:

Usage Analytics

If (and only if) you turn this on, the App will collect a limited, anonymized set of usage statistics about how you use SleepTrack Audio. No personal content or identifiers are included – for example, we do not log your specific sleep times, the titles of media you were listening to, your notes, or any Health Connect details in these analytics.

Crash Reporting

If you enable crash reporting, the App will send crash logs and diagnostic reports when the app experiences an error or malfunction. These reports help us identify and fix bugs. Crash logs do not include your personal sleep or listening content.

No Personal Identifiers

SleepTrack Audio does not require you to create an account or provide personal identity information to use the app. We do not ask for your name, email address, phone number, physical address, or any government identifiers. The App operates entirely without such identifiers.

How We Use Your Information

We use the collected information solely to provide, personalize, and improve the SleepTrack Audio experience. We do not use your data for advertising profiles or any purposes beyond the app's core functionality. Specifically:

Core Sleep-Tracking Functionality

Your sleep data and media playback data are combined on-device to infer the moment you likely fell asleep during audio playback. This is the App's core feature: determining a "resume point" in your audiobook or podcast for the next day.

Morning Resume Notifications

If you have allowed SleepTrack Audio to send notifications, the App can send you a gentle morning notification with your recommended resume point. These notifications are generated only after a sleep session is detected and a recommendation is available.

In-App Insights and Analytics (On-Device)

SleepTrack Audio provides you with visualizations and summaries of your own sleep and listening data within the app. All such insights are computed locally on your device using your stored data.

User-Initiated Features

When you use optional features of the app, your data is used only as needed to carry out the feature. For example, if you set a Sleep Timer, add a bookmark, or use the export feature, the App uses your data locally to fulfill these functions.

Legal Bases (EU GDPR)

Where the General Data Protection Regulation (GDPR) applies, we rely on the following legal bases under Art. 6(1) GDPR:

• Performance of a contract (Art. 6(1)(b)): to provide the core app functionality (sleep detection, resume suggestions, local insights).
• Consent (Art. 6(1)(a)): for optional features you explicitly enable, such as usage analytics and crash reporting.
• Legitimate interests (Art. 6(1)(f)): to ensure the security and integrity of the app and website, including basic server logging and abuse prevention.
• Legal obligation (Art. 6(1)(c)): where processing is required to comply with legal duties (e.g., accounting/recordkeeping, responding to lawful requests).

Website Data Processing

This website is primarily informational. We do not use analytics trackers. Limited processing occurs when you visit the site or contact us:

Server Logs (Cloudflare & Hosting)

When you access our website, Cloudflare (security/CDN) and our hosting provider automatically process technical data such as IP address, timestamp, requested URL, referrer, and user agent for security (e.g., DDoS protection, abuse prevention) and operations. Legal basis: Art. 6(1)(f) GDPR (legitimate interests). Logs are retained only as long as necessary for security/troubleshooting and are then automatically deleted unless needed for incident investigation.

Contact Emails

If you email us (e.g., [email protected], [email protected]), we process your message content and contact details to handle your request. Legal basis: Art. 6(1)(b) GDPR (pre-contractual steps/contract) or Art. 6(1)(f) GDPR (legitimate interests) depending on context. Emails are retained according to legal retention requirements and our operational needs.

No Tracking Cookies

We do not use analytics tools, tracking cookies, or third-party advertising scripts on the website. Cloudflare may set strictly necessary, security-related cookies to deliver the service; we do not use marketing cookies.

Data Storage and Security

We take a "local-first" approach to data storage and implement security measures appropriate for a mobile application:

Local Device Storage

All data that SleepTrack Audio collects or generates is stored locally on your device using an on-device database (built on Android's Room/SQLite database system). This means your SleepTrack Audio data resides in the protected app-storage area of your phone. No other apps on your device can directly access this information.

Data Retention and Automatic Cleanup

SleepTrack Audio is designed to avoid accumulating excessive data on your device. By default, the app will periodically purge older data that is no longer needed for core functionality:

• The App automatically deletes detailed media playback history records that are older than approximately 60 days
• Temporary files, caches, and other ephemeral data are regularly cleared out
• Pro users may adjust or disable certain retention limits

Security Measures

SleepTrack Audio employs standard security practices to protect your data:

• Android Sandbox: All data is stored in the app's private sandbox
• Secure APIs: We only use official, trusted APIs for accessing sensitive health data
• No Unencrypted Transmission: We do not transmit your personal data over the internet in normal usage
• Minimal Permissions: We follow the principle of least privilege in requesting permissions

Data Sharing and Disclosure

Your privacy is central to SleepTrack Audio's design. As such, sharing of data with third parties is extremely limited. In fact, under typical usage, the app does not send out your personal data to anyone.

No Sale or Unwarranted Sharing of Personal Data

We do not sell, rent, or trade your personal data with any third parties. We also do not share your data for advertising profiling or marketing by others.

Third-Party Service Providers (Analytics and Crash Reporting)

The primary instance where some data might leave your device is if you opt in to our optional analytics or crash report services. In that case, we use Google Firebase Analytics and Crashlytics as trusted third-party service providers. The information shared is minimal and non-identifying.

Website Security/CDN (Cloudflare)

For the website, we use Cloudflare to provide content delivery and security (including DDoS protection). Cloudflare acts as our data processor under a Data Processing Addendum (DPA) and processes only the technical data necessary to provide these services. We do not permit Cloudflare to use the data for advertising or profiling.

Advertising and Affiliate Partners

We do not share your personal data with advertisers or marketing companies. Any advertisements shown (for free users) are delivered via Google's AdMob network with non-personalized ads only.

Your Rights and Controls

Because SleepTrack Audio is focused on user privacy and control, we have built the app to empower you to exercise various privacy rights easily:

Access and Data Portability

You have full access to your data through the app's dashboard and history screens. Additionally, we provide an Export feature that lets you obtain your data in common formats (JSON, CSV, HTML, plain text).

Rectification (Correction of Data)

You can correct inaccurate data by editing it at the source (Health Connect, media apps) or by deleting incorrect entries within the app.

Deletion of Data (Right to Erasure)

You can delete your data at any time:

• Delete individual items through the app's UI
• Clear all app data via the app's reset feature
• Uninstall the app to delete all local data

Revoking Consent / Managing Permissions

You can revoke any permissions at any time:

• Health Connect permission
• Notification Access for media monitoring
• Post Notifications permission
• Analytics and crash reporting opt-outs
• Advertising opt-out

No Discrimination

We will never restrict your access to app features or degrade your user experience because you exercise a privacy right.

Children's Privacy

SleepTrack Audio is intended for use by adults and is not designed to attract children. We do not knowingly collect personal information from anyone under the age of 13. If we discover that we have inadvertently collected information from a child under 13, we will delete that information as soon as possible.

International Data Transfers

Because SleepTrack Audio does not send your personal data to any server in the first place, we do not actively transfer your personal information across country borders. The data resides on your device, which means it stays with you wherever your device goes.

The only scenarios that might involve data leaving your country are: (i) optional services you can choose to enable (Firebase Analytics, Crashlytics, AdMob, cloud backup), and (ii) website delivery/security via Cloudflare, which may process IP addresses and technical data in data centers outside the EU. For such providers, we implement appropriate safeguards such as Standard Contractual Clauses (SCCs) and rely on participation in frameworks like the EU–U.S. Data Privacy Framework, where applicable.

Cookies and Tracking

We do not use cookies or similar tracking technologies on this website. If in the future we add non-essential analytics or embeds, we will request your consent before activating them.

Changes to This Privacy Policy

We may update or revise this Privacy Policy from time to time to reflect changes in the app's features or legal requirements. If we make material changes, we will notify you through the app or other appropriate channels. Changes will become effective on the date they are posted.

Contact Information

If you have any questions, concerns, or requests regarding this Privacy Policy or your data, please contact us:

We will do our best to respond in a timely and comprehensive manner. Your trust is important to us, and we welcome your feedback on any privacy or security matter.