Privacy Policy

1 Introduction

Habit Horizon – AI Habit Coach ("Habit Horizon", "the Application", "we", "us", or "our") is an Android application developed and operated by an independent developer. This Privacy Policy explains what information is collected when you use Habit Horizon, how it is used, and the rights available to you regarding your personal data.

We are committed to protecting your privacy. By default, your habit data is stored exclusively on your device. It leaves your device only if you choose to sign in and use the optional Cloud Backup feature, which is described in full in Section 8. Where data is processed by third-party services we have integrated, this policy describes those data flows in full.

By using Habit Horizon, you agree to the practices described in this Privacy Policy. If you do not agree, please discontinue use of the Application and uninstall it from your device.

2 Information We Collect

2.1 Information You Provide Directly

All data you create within Habit Horizon is stored locally on your device inside a private SQLite database (Room v2.8.4). We do not have access to this data. It includes:

• Habit records: name, icon, color, category notes, tracking type (Task / Amount / Time), target value, frequency schedule, and reminder time.
• Completion logs: timestamps for each habit action recorded.
• User profile: a locally generated display name, experience points (XP), and progression level — used solely for gamification features within the app.
• Achievement records: unlocked achievement identifiers and states.
• Dashboard configuration: tab preferences and display layout choices.
• App preferences: language selection, theme (light/dark/dynamic color), and subscription status flag — stored in Android SharedPreferences on your device.

2.2 Account Information (Optional Sign-In)

Habit Horizon can be used in full without an account. Signing in is optional and exists only to enable Cloud Backup. If you choose to sign in with Google, the following is processed by Firebase Authentication:

• Google account email address — used as your account identifier.
• Display name and profile photo URL — as supplied by your Google account. Your display name is copied into your local in-app profile; your photo is displayed in Settings.
• Firebase user ID (UID) — a pseudonymous identifier that determines which cloud storage folder belongs to you.

2.3 Data Collected Automatically by Third-Party SDKs

Habit Horizon integrates several third-party SDKs whose own data collection practices are described below. We do not independently control what these SDKs collect; their use is governed by their respective privacy policies, which are linked in Section 5.

2.3.1 Google Firebase Analytics

Firebase Analytics (SDK: firebase-analytics via Firebase BOM 34.13.0) is active in the Application. Firebase collects the following data to help us understand general usage patterns and app performance:

• Pseudonymous device identifiers (Firebase Installation ID).
• App interaction events (screens viewed, features used — no habit content is included).
• Crash diagnostics and ANR (Application Not Responding) data.
• Approximate device locale and time zone.
• App version and Android OS version.

2.3.2 Google AdMob (Advertising)

AdMob (SDK: play-services-ads v25.3.0) is integrated to display advertisements to users who have not purchased the premium upgrade. AdMob may collect:

• Advertising ID (Google Advertising ID / GAID) to serve personalized or contextually relevant ads.
• Approximate geographic location (derived from IP address, not GPS) for ad targeting.
• Device hardware and software information (device model, OS version, screen resolution).
• Ad interaction data (impressions, clicks, ad completion rates).

The following ad formats are implemented and active: App Open Ads, Interstitial Ads, Native Ads, and Banner Ads. All ads are suppressed for premium subscribers.

2.3.3 Google Play Billing

Google Play Billing (SDK: billing-ktx v9.0.0) is used to process the one-time in-app purchase that unlocks the premium tier. When you make a purchase, payment processing is handled entirely by Google Play. We do not collect, process, or store your payment card details, bank information, or billing address. The Application only receives a pseudonymous purchase token to verify premium status locally.

2.4 Data Collected via AppFunctions (AI Integration)

Habit Horizon implements Android AppFunctions (androidx.appfunctions v1.0.0-alpha09), which is an Android 16+ platform feature that allows the Google AI system (Gemini) to interact with the Application on your behalf. This feature is available exclusively to premium subscribers.

When AppFunctions are invoked, the following data may be shared with the Android AI system:

• Habit names.
• Habit completion timestamps and counts.
• Habit parameters (tracking type, frequency, schedule, notes) when creating a habit via AI.

2.5 Data We Do NOT Collect

The following categories of data are not collected by Habit Horizon. Absence is confirmed through full codebase inspection:

3 How We Use Information

3.1 App Data (Stored Locally)

Local data (habits, completions, profile, achievements, preferences) is used solely for:

• Displaying your habit list, completion calendar, heatmap, and statistics within the app.
• Triggering daily reminder notifications at your specified times.
• Calculating achievement progress and unlocking milestone badges.
• Enabling data export (backup) and import (restore) via user-selected local files.
• Enabling the optional Cloud Backup feature, if you sign in and start a backup yourself.
• Enabling AI-assisted habit interactions via Android AppFunctions (premium only).

3.2 Firebase Analytics Data

Analytics data is used to understand which features are most used (enabling us to prioritize improvements), identify and diagnose application crashes and performance issues, and monitor app stability across different Android versions and device types.

3.3 AdMob Data

AdMob data is used to display relevant advertisements to free-tier users and generate revenue to support continued development of the Application. You may opt out of personalized advertising at any time through Android Settings → Privacy → Ads → Opt out of Ads Personalization.

3.4 Billing Data

Billing data is used solely to verify that the in-app purchase has been completed, enabling the premium tier (ad-free experience and AppFunctions access).

3.5 Account and Cloud Backup Data

If you sign in, your account information is used solely to identify you and to determine which private cloud storage folder your backup belongs to. Your uploaded backup is used solely to restore your own data onto a device of your choosing. We do not read, analyse, mine, profile, sell, or share the contents of your backup, and it is not used for advertising or analytics.

4 Notifications & Alarms

Habit Horizon may send you local push notifications as habit reminders if you grant the POST_NOTIFICATIONS permission (required on Android 13+). These notifications:

• Are scheduled using Android's AlarmManager.setInexactRepeating. The app does not use exact alarms (SCHEDULE_EXACT_ALARM or USE_EXACT_ALARM).
• Contain only the habit name you configured. No personal or sensitive data appears in notifications.
• Are processed entirely on-device. Notification content is not transmitted to any server.
• Do not persist after a device reboot. Reminders will resume when you next open Habit Horizon after a restart.

5 Third-Party Services

The following table summarizes all third-party SDKs that are active in the released Application, what data they may collect, and links to their privacy documentation.

6 Permissions Used

The following Android permissions are declared in the Application's AndroidManifest.xml. No other permissions are requested.

7 Data Storage & Security

7.1 Local Storage

All habit data, action logs, user profile, achievements, and app preferences are stored on your device using:

• Android Room Database (SQLite, v2.8.4) — stores habits, completions, user profile, achievements, and tab configuration. Stored in the app's private internal storage, inaccessible to other apps.
• Android SharedPreferences — stores language setting, theme preference, subscription flag, and onboarding state.

7.2 File Exports

The Export & Backup feature allows you to export your habit data as a ZIP file (containing CSV files) to a location of your choice using the Android Storage Access Framework. This file is user-controlled and is not uploaded anywhere by the Application. You are responsible for securing any exported backup files.

7.3 Cloud Backup Storage

If you use Cloud Backup, one backup file is stored per account in Firebase Cloud Storage, in a folder keyed to your Firebase user ID. Storage security rules restrict read and write access on that folder to the signed-in owner, so no other user of the app can read your backup. Data is encrypted in transit (HTTPS) and at rest by Google Cloud Storage. Section 8 describes this feature in full.

7.4 Image Sharing

The achievement sharing feature captures an in-app screenshot of an achievement badge and shares it via the Android share sheet. The image is temporarily stored in the app's private cache directory and shared using Android's FileProvider mechanism. It is not uploaded to any server by the Application.

7.5 Security Measures

• App data is stored in private internal storage, inaccessible to other apps without root access.
• The FileProvider is configured with exported="false", preventing unauthorized access.
• The BroadcastReceiver (ReminderReceiver) is configured with exported="false".
• Release builds apply ProGuard code minification and obfuscation.

8 Account & Cloud Backup

8.1 The Feature Is Optional

Habit Horizon is fully usable without an account. Every tracking, reminder, statistics, and local export feature works while signed out. Signing in with Google exists for one purpose: to let you keep a copy of your habit data in the cloud so you can restore it later or move it to another device.

8.2 When Data Is Uploaded

A backup is created only while you are signed in, and only in one of two ways:

• On demand — you tap Back up now in Settings → Export & Backup.
• Once a day — you turn on Automatic backup in that same screen. This setting is off unless you switch it on. While it is on, the app uploads a fresh backup about once every 24 hours whenever the device has a network connection.

Signing out turns automatic backup off and cancels any scheduled upload. If you never sign in, no habit data ever leaves your device.

8.3 What Is Uploaded

A backup is a single ZIP file containing the same data that a local file export produces:

• Your habits — including names, notes, icons, colours, tracking type, target values, frequency schedules, and reminder times.
• Your completion history — the timestamped record of each habit action.
• Your profile and progress — display name, experience points, level, and achievement state.

8.4 Where It Is Stored

Backups are stored in Google Firebase Cloud Storage under a folder keyed to your Firebase user ID. Only one backup is kept per account: each new backup replaces the previous one. Storage security rules restrict read and write access on that folder to the signed-in account that owns it. Data is encrypted in transit and at rest by Google Cloud Storage.

8.5 Restoring Is Destructive

8.6 Signing Out

Signing out ends your session on the device and clears the stored credential. It does not delete your cloud backup, and it does not delete any habit data on your device. Signing back in with the same Google account gives you access to the same backup.

8.7 Deleting Your Account

You can delete your account from Settings. When you do, the app deletes your cloud backup first and then deletes the account itself; if the backup cannot be deleted, the operation is aborted and your account is left intact, so a backup is never orphaned.

Firebase may retain deleted authentication records for a short period as part of Google's own operational and backup processes. See Firebase's privacy documentation for details.

8.8 What We Do Not Do

We do not read, analyse, profile, sell, or share the contents of your backup. It is not used for advertising, for analytics, or for training any AI model. It exists only so that you can restore it yourself.

9 Children's Privacy

Habit Horizon is not directed to children under the age of 13 (or the applicable age in your jurisdiction). We do not knowingly collect personal information from children under 13.

If you are a parent or guardian and believe your child has used the Application, please contact us at the address in Section 16 and we will take appropriate action.

10 Data Retention

Locally stored habit data is retained for as long as the Application is installed on your device. The data is deleted when you:

• Uninstall the Application (unless a backup exists via Android Auto Backup or your own manual export).
• Clear app data through Android Settings → Apps → Habit Horizon → Storage → Clear Data.

A cloud backup, if you have made one, is retained until you replace it with a newer backup or delete your account. It is not affected by uninstalling the app or clearing app data — those remove the copy on your device only. Account information is retained by Firebase Authentication for as long as your account exists.

Data collected by Firebase Analytics is retained in accordance with Google's Firebase data retention settings (default: 2 months for event-level data; 14 months for user-level data). Data collected by AdMob is governed by Google's advertising data policies.

11 Your Rights

Depending on your jurisdiction, you may have the following rights regarding your personal data:

11.1 Access & Portability

All habit data is immediately accessible to you within the Application. You may export it at any time using Settings → Export & Backup, which produces a complete ZIP backup of your habits and completion history.

11.2 Deletion

You can delete your local data by deleting individual habits from within the app, clearing all app data via Android Settings → Apps → Habit Horizon → Storage → Clear Data, or uninstalling the Application. For data held by Firebase or Google AdMob, please refer to Google's account data deletion tools at myaccount.google.com/data-and-privacy.

11.3 Account and Cloud Backup Deletion

If you have signed in, you can delete your account and your cloud backup together using Delete account in Settings. This removes the uploaded backup and the account itself. As described in Section 8.7, it does not delete the habit data on your device. If you want to stop using the account but keep the backup, sign out instead.

11.4 Advertising Opt-Out

You may limit ad personalization through Android Settings → Privacy → Ads → Opt out of Ads Personalization, or reset your Advertising ID via Android Settings → Privacy → Ads → Reset Advertising ID.

11.5 Notification Withdrawal

You may revoke notification permission at any time via Android Settings → Apps → Habit Horizon → Notifications.

11.6 AppFunctions / AI Integration

You may revoke the AI system's access to Habit Horizon via Android Settings (AI / Digital Assistant settings). This does not affect the app's normal functionality.

12 International Data Transfers

Habit Horizon stores user-created data locally on your device. If you do not use Cloud Backup, no international transfer of your habit data occurs.

If you do sign in and create a cloud backup, your account information and your backup file are stored on Google's infrastructure and may be processed in a country other than your own, including the United States.

Data transmitted by Firebase Analytics and Google AdMob may be processed on Google's servers, which may be located outside your country of residence, including in the United States. Google maintains appropriate data transfer mechanisms (such as Standard Contractual Clauses) for cross-border transfers. Please review Google's Privacy Policy for details.

13 In-App Purchases & Billing

Habit Horizon offers a one-time in-app purchase (a permanent premium upgrade, not a recurring subscription) processed entirely by Google Play.

• Purchase type: One-time, non-consumable in-app product (not a subscription).
• What is unlocked: Ad-free experience; access to AI-assisted habit management via Android AppFunctions.
• Payment processing: Handled by Google Play. We do not collect or have access to your payment card details, billing address, or any financial information.
• Verification: The Application queries Google Play Billing at startup to verify purchase status. The verified status (boolean) is stored locally on your device.
• Refunds: Refund requests must be submitted to Google Play in accordance with Google Play's refund policy.

14 AI-Powered Features

Habit Horizon uses the Android AppFunctions API to expose habit data to the Android AI system (Google Gemini) on Android 16+ devices, enabling premium users to manage habits via natural language commands.

The following AppFunctions are available to the AI system (premium subscribers only):

15 Changes to This Policy

We may update this Privacy Policy from time to time to reflect changes in our practices, new features, or applicable laws. When we make material changes, we will update the "Last Updated" date at the top of this policy.

Continued use of the Application after any changes constitutes your acceptance of the updated Privacy Policy. We encourage you to review this policy periodically.

16 Contact Us

If you have any questions, concerns, or requests regarding this Privacy Policy or the handling of your data, please reach out: