Is lckin completely free to download on Google Play?

Yes! lckin is free to download on Android. We built this app to give students an honest, distraction-free tool without subscription traps or intrusive ads during study sessions.

Does the ambient sound mixer work completely offline?

Yes, 100% offline. All four audio soundscapes (Deep Rain, Cozy Cafe, Campfire, and Brown Noise) are bundled and rendered directly on your device.

How does the 'Flip to Lock In' feature work?

lckin utilizes your Android phone's built-in proximity and gravity/orientation hardware sensors. When you place your phone face-down on your study desk, it recognizes the physical gesture and begins your session automatically.

Legal & Privacy Documentation

Privacy Policy

For lckin: Aesthetic Study Timer (Package: com.avdheshgarg.lckin)

Effective Date: October 17, 2026•Last Updated: October 17, 2026•Developer: Avdhesh Garg

Welcome to lckin: Aesthetic Study Timer ("we", "our", or "the App"), developed by Avdhesh Garg.

We are committed to protecting your privacy. This Privacy Policy explains how information is handled when you use the lckin: Aesthetic Study Timer mobile application for Android.

By downloading, installing, or using the App, you agree to the collection and use of information in accordance with this Privacy Policy.

1Summary of Our Privacy-First Architecture

• No User Accounts

You do not need an account, email address, or password to use lckin.

• Local-First Processing

All timer sessions, audio mixer configurations, and user preferences remain stored strictly on your local device.

• No Background Telemetry

We do not operate custom backend servers to track your focus history, habits, or private routine.

• Transparent Monetization

We display advertisements via the Google Mobile Ads SDK (Google AdMob) to support development.

2Information Handled Locally on Your Device

A. Focus Timer & Audio Mixer Data

The App stores your Pomodoro timer durations, selected ambient tracks, per-track volume levels, and theme preferences locally on your device via standard Android application storage (AsyncStorage). This information never leaves your device and is never transmitted to us or any third party.

B. Device Motion & Sensors ("Flip to Lock In")

The App accesses the device's internal motion sensors (accelerometer) strictly to calculate orientation in real time (e.g., detecting when the phone is placed face-down on a surface to automatically start a focus session). All sensor calculations occur entirely in memory on your device. Sensor readings are never saved to disk, logged, or sent over the network.

C. Audio Playback

The App utilizes local ambient audio files bundled directly within the app binary. The App does not record audio, does not access the device microphone, and does not monitor any ambient room sounds.

3Third-Party Services & Information Collected Automatically

To support the ongoing maintenance and development of the App, we integrate Google AdMob (Google Mobile Ads SDK).

When you use the App with an active internet connection, Google AdMob may automatically collect certain diagnostic and advertising data, including:

Device Identifiers: Google Advertising ID (GAID / AAID), Android ID, or unique device tokens.
Technical Information: IP address, device model, operating system version, mobile network information, and general locale/language settings.
Ad Interaction Data: Impressions, ad view duration, clicks, and diagnostic information to prevent ad fraud and verify delivery.

For detailed information on how Google uses and protects this data, please visit:

Google Privacy Policy•How Google uses information from sites or apps

4User Consent and Privacy Choices (GDPR & UK)

If you are located in the European Economic Area (EEA), the United Kingdom, or Switzerland:

We implement Google's User Messaging Platform (UMP) to present you with a consent banner regarding personalized ads and vendor data usage.
You have the freedom to accept, reject, or customize your ad consent preferences.
You can review or modify your consent settings at any time within the App by navigating to Settings → Privacy & Consent Settings.

5Data Retention and Deletion

Because focus sessions, preferences, and sensor states are stored exclusively on your device:

You retain complete control over your data.
You can delete all locally stored data at any time by clearing the App's storage via Android Settings → Apps → lckin → Storage & cache → Clear storage, or by uninstalling the App from your device.

6Children's Privacy

The App is not directed to individuals under the age of 13 (or under 16 in certain jurisdictions). We do not knowingly collect personal identifiable information from children under 13. If you believe that a child has provided personal information to third-party ad networks through our App, please contact us immediately so we can take appropriate steps.

7Security

We value your trust. We do not maintain any external databases containing your personal information. Third-party ad transmissions are encrypted in transit using industry-standard protocols (HTTPS / TLS).

8Changes to This Privacy Policy

We may update our Privacy Policy from time to time. Any changes will be posted on this page with an updated "Effective Date." We encourage you to review this policy periodically for any updates.

9Contact Us

If you have any questions, suggestions, or concerns regarding this Privacy Policy or the practices of lckin, please contact us at:

Developer: Avdhesh Garg

Email: support@lckin.app