Effective date and last updated: August 24, 2026
Application Version: 1.0.0+
Application Package ID: com.umbrabyte.minimalist.launcher
Official Canonical URLs: https://umbrabyte.app/en/oasis-launcher/privacy/ and https://umbrabyte.app/en/privacy/
This privacy policy applies to the Android mobile application Oasis Minimalist Launcher (identified by package name com.umbrabyte.minimalist.launcher), developed and published by Umbrabyte Apps (operated by sole proprietor Cristian Donet Segura). It complements the general Umbrabyte Privacy Policy and constitutes the official, binding privacy policy linked inside the mobile application and displayed within its Google Play Store listing.
Plain language summary: Oasis Minimalist Launcher turns your phone into a calm, distraction-free space for focus and intentional living. All app indexing, screen time counting, notification digests, blocked app schedules, and custom preferences are processed and stored strictly locally on your device in SQLite Room and Android DataStore. Umbrabyte operates no external servers to intercept or monitor your phone usage, requires no user account, includes zero advertisements, and never sells or rents personal data. Data only leaves your device when Google Play processes an optional Oasis PRO subscription/purchase or when you contact direct support.
This plain-language summary is provided for clarity and does not replace the comprehensive legal and technical terms set forth below.
1. Scope and key facts
Oasis Minimalist Launcher is an ethical, typography-first Android home screen and digital wellbeing utility. It replaces dopamine-triggering interfaces, red notification badges, and infinite algorithmic feeds with a clean, distraction-free environment, an alphabetical A-Z app drawer, notification batching, app time limits, mindful breathing pauses, and contextual focus profiles.
- No user account or login credentials: The core launcher never asks you to create an account, profile, provide an email address, or enter personal credentials.
- 100% On-Device Local Processing: Screen time counting, usage analytics, app categorization, notification filtering, and quiet schedules operate entirely on your physical hardware.
- No Umbrabyte cloud infrastructure: Umbrabyte does not own, operate, or maintain intermediate backend servers, telemetric databases, or user-tracking pipelines. Your list of installed applications and personal digital habits are never uploaded to remote servers.
- Zero advertisements or marketing trackers: The application contains zero advertising SDKs, commercial tracking libraries, or affiliate monitors. The application manifest explicitly strips (
tools:node="remove") permissions associated with advertising identifiers (AD_IDandAdServices). - No data sales or commercial broker sharing: Umbrabyte does not sell, rent, lease, or trade user personal information or behavioral insights under any circumstances.
- No automated profiling or surveillance: We do not conduct automated profiling, behavioral scoring, or automated decision-making.
- Platform integration: Optional Oasis PRO purchases and subscriptions are handled securely via official Google Play Billing APIs. In-App Update checks utilize official Google Play Core APIs.
2. Data Controller
The developer and data controller for any personal data received directly by Umbrabyte (such as email communications with customer support) is:
- Full Name: Cristian Donet Segura
- Studio Name: Umbrabyte Apps
- Business Address: Calle Pintor Camarón, nº 24, 12560 Benicasim, Castellón, Spain
- Tax ID (NIF): 20468489F
- D-U-N-S® Registered Number: 374071851
- Privacy & Support Contact: support@umbrabyte.app
- Official Website: https://umbrabyte.app
Platform services provided by Google LLC (such as the Google Play Store, Google Play Billing, and Android OS runtime components) act as separate, independent data controllers for data processed under their respective privacy policies.
3. Data processed by the application
3.1 Information stored and processed strictly on device
The application operates locally on Android using Jetpack Room Database (OasisDatabase) and Android Jetpack DataStore. All records are isolated within the private sandbox storage of the app:
| Data Category | Specific Information Elements | Storage Location & Retention |
|---|---|---|
| App catalog & preferences | Installed app labels, package names, favorite apps, desktop folders, custom aliases, drawer sorting, and canvas theme settings | Private local Room database (OasisDatabase) & DataStore on device |
| Screen time & usage metrics | Daily app unlock counts, active minutes per app, top used apps, and 7-day / 365-day usage summaries | Private local Room database (UsageDayDao) on device |
| App blocker & schedules | Blocked application packages, quiet window schedules (up to 20), long blocking commitments, and daily threshold timers | Private local Room database (BlockedAppDao, BlockingScheduleDao) |
| Filtered notification digest | Filtered notification titles, package names, and arrival timestamps (when notification filter is active) | Private local Room database (FilteredNotificationDao) on device |
| Context profiles | Focus mode configurations (Work, Home, Study) and scheduled profile triggers | Private local Room database (ContextProfileDao) on device |
| Next calendar event | Title and start time of the next upcoming event within a 12-hour window (when calendar integration is enabled) | Processed in-memory during home screen composition; never saved to database, exported, or transmitted |
| Purchase status & PRO entitlement | Cached local PRO entitlement status verified via Google Play Billing | Private local preferences (DataStore) on device |
| Local backup & QR transfer | Encrypted SQLite database dump for device-to-device migration | Stored in private user-selected local file or streamed offline via visual QR frames |
3.2 Android permissions and device capabilities
Android permissions are requested transparently with contextual rationale only when you access a feature that requires them. No sensitive permission is required for the basic home screen launcher:
| Permission / Capability | Purpose & Technical Function | Necessity & Handling |
|---|---|---|
android.permission.QUERY_ALL_PACKAGES |
Discovers and indexes installed applications to populate the A-Z drawer, search index, and home favorites | Required for core launcher functionality; processed 100% locally on device |
android.permission.PACKAGE_USAGE_STATS |
Accesses Android system usage statistics locally to calculate daily screen time, show usage graphs, and enforce time limits | Optional; required only for time limits and usage statistics. If revoked, launcher operates normally |
android.permission.SYSTEM_ALERT_WINDOW |
Redirects blocked apps back to the calm Oasis home screen when opened during active focus sessions | Optional; used to enforce distraction-free boundaries without drawing screen-capturing overlays |
android.permission.POST_NOTIFICATIONS |
Displays local notifications for time limit reminders and scheduled digest deliveries on Android 13+ | Optional; generated 100% locally on device |
android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS |
Ensures scheduled quiet windows and reminder alarms are not killed by aggressive OEM power managers (Samsung, Xiaomi, Huawei) | Optional; does not collect user data |
android.permission.FOREGROUND_SERVICE & FOREGROUND_SERVICE_SPECIAL_USE |
Keeps background monitoring service (BlockingAndReminderService) active during active focus sessions with a persistent status notification |
Required only during active background blocking workflows |
android.permission.BIND_NOTIFICATION_LISTENER_SERVICE |
Allows OasisNotificationListenerService to silence distracting alerts and aggregate them into a peaceful digest |
Optional; all notification digest data remains strictly local in SQLite Room |
android.permission.BIND_ACCESSIBILITY_SERVICE |
Optional Precision mode (OasisPrecisionAccessibilityService) for instant redirection of blocked apps before rendering |
Optional; does NOT read passwords, keystrokes, screen text, or sensitive data |
android.permission.READ_CALENDAR |
Reads title and start time of the next event within 12h to display under the home clock | Strictly optional; processed in-memory, never stored in SQLite, never transmitted |
android.permission.CAMERA |
Scans QR codes during offline peer-to-peer device migration (QR_TRANSFER) |
Strictly optional; no photos or videos are captured, stored, or transmitted |
com.android.vending.BILLING |
Connects to Google Play Billing 7.x API for optional Oasis PRO subscriptions or lifetime purchase | Used when purchasing or restoring PRO |
The application does NOT declare or request GPS location, contacts list, call logs, SMS, microphone recordings, health data, advertising identifier (GAID), photos, or biometric templates (biometric authentication is verified via native Android BiometricPrompt).
3.3 Data Umbrabyte does NOT receive
During standard use of Oasis Minimalist Launcher, Umbrabyte does not receive, intercept, or store on servers:
- Your installed applications or app usage frequency.
- The content, body, or sender of your notifications.
- Your search queries in the A-Z drawer.
- Your calendar events, notes, detox commitments, or screen-time history.
- Biometric information (fingerprint/face data remains strictly protected within Android hardware keystore).
4. External services & monetization terms
4.1 Distribution and payments via Google Play Billing
Oasis Minimalist Launcher is free to download and use. Optional Oasis PRO tiers are offered via official Google Play Billing (version 7.x):
| Product SKU | Product Type & Base Plan | Tier 1 Base Price (USD) | Trial & Grace Period |
|---|---|---|---|
oasisminimalistlauncher_pro_monthly |
Auto-renewing subscription (monthly / P1M) |
$2.99 / month | Grace period: P7D + P30D |
oasisminimalistlauncher_pro_yearly |
Auto-renewing subscription (yearly / P1Y) |
$11.99 / year (Best Value) | 7-day free trial (yearly-trial-7d); Grace: P14D + P30D |
oasisminimalistlauncher_pro_lifetime |
One-time in-app purchase (lifetime-purchase) |
$24.99 (Permanent) | Lifetime access, no renewal |
- Billing terms: Payments, tax calculation, currency conversion, and receipt delivery are handled entirely by Google Play. Umbrabyte never receives or stores credit card numbers, bank details, or payment credentials.
- Subscription management & cancellation: Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current billing cycle. Users can manage or cancel subscriptions at any time directly through Google Play Store > Payments & subscriptions.
- Refund policy: All purchases and refund requests are governed by the Google Play Refund Policy.
- Free tier guarantee: The core launcher (clock, home screen, A-Z drawer, text search, opening apps, notification filter, daily time limits, today and 7-day screen time, all 10 canvas themes, and 34 languages) is free forever. No configured settings are deleted when PRO expires.
4.2 In-app updates via Google Play Core
The app integrates official Google Play Core APIs (app-update-ktx) to communicate securely with Google Play Store via Android IPC and check for new releases.
4.3 Third-party SDKs and telemetry policy
Oasis contains zero third-party marketing, tracking, or analytical SDKs (no Firebase Analytics, Mixpanel, AppsFlyer, Facebook SDK, or AdMob). Transitive network traffic is limited strictly to Google Play Services for payment processing and update verification over TLS 1.3 / HTTPS.
5. Purposes and legal bases
Under the European Union General Data Protection Regulation (GDPR / RGPD) and UK GDPR, processing activities rely on:
| Activity / Feature | Purpose | Legal Basis under GDPR |
|---|---|---|
| Core launcher & app navigation | Deliver fundamental home screen and app drawer functionality | Contract performance (Art. 6.1.b GDPR) |
| Screen time tracking & notification filter | Deliver digital wellbeing tools configured by user | Explicit user consent via permission prompt (Art. 6.1.a GDPR) |
| Calendar event display & QR migration | Render next event and transfer data via camera QR scan | Explicit user consent via runtime permission (Art. 6.1.a GDPR) |
| PRO purchases & license management | Fulfill orders, verify entitlements & statutory accounting | Contract performance (Art. 6.1.b) & Legal obligation (Art. 6.1.c GDPR) |
| In-app updates & security maintenance | Keep app secure, compatible, and updated | Legitimate interest (Art. 6.1.f GDPR) |
6. Data retention, deletion & management
| Data Type | Retention Period | Deletion & Management Method |
|---|---|---|
| Local app settings, usage stats & digests | As long as app is installed or until manually cleared | Clear app storage in Android Settings or uninstall app |
| Local PRO purchase cache | Duration of app installation; restorable via Google Play | Automatically synchronized with Google Play account |
| Transaction records in Google Play Console | Statutory tax and accounting retention periods | Maintained by Google and Umbrabyte for legal compliance |
| Support email correspondence | Up to 3 years to resolve technical and legal inquiries | Periodic inbox deletion |
The application declares allowBackup="false" to prevent unencrypted cloud extraction by third-party backup tools. All data remains strictly under user control.
7. Data security
- Operating system sandboxing: All local databases and DataStore files are isolated within Android’s private UID sandbox.
- Encryption at rest: Databases and preferences utilize OS-level hardware-backed encryption.
- Encryption in transit: All network communication with Google Play services uses HTTPS / TLS 1.3.
- Cleartext traffic prohibited:
android:usesCleartextTraffic="false"is enforced across the entire application manifest.
8. Your rights worldwide
You hold comprehensive privacy rights across global jurisdictions:
- European Union & EEA (GDPR / RGPD & Spanish LOPDGDD): Right of access (Art. 15), rectification (Art. 16), erasure / right to be forgotten (Art. 17), restriction (Art. 18), data portability (Art. 20), objection (Art. 21), and right to withdraw consent. You also have the right to lodge a complaint with the Agencia Española de Protección de Datos (AEPD) at https://www.aepd.es.
- United Kingdom (UK GDPR & DPA 2018): Full consumer rights enforceable via the Information Commissioner’s Office (ICO).
- United States & California (CCPA / CPRA / CalOPPA & US State Laws): Right to know, access, delete, and correct personal information. Umbrabyte does not sell or share user personal data for cross-context behavioral advertising. We respect Global Privacy Control (GPC) and Do Not Track signals.
- Brazil (LGPD): Rights under Article 18, including confirmation, access, correction, anonymization, and deletion.
- Canada (PIPEDA): Fair information handling and access rights.
- Australia (Privacy Act 1988 & APPs): Principles for respectful, transparent data handling.
- Japan (APPI) & China (PIPL): Full statutory compliance for local privacy mandates.
To exercise any privacy rights, contact us directly at support@umbrabyte.app.
9. Children’s privacy
Oasis Minimalist Launcher is an ethical digital wellbeing tool suitable for all ages, including families. It complies with COPPA (US), GDPR-K (EU), and the UK Age-Appropriate Design Code. The application does not knowingly collect personal information from children or adults. The Oasis Kids feature provides on-device parental controls and session timers without external telemetric monitoring.
10. Changes to this privacy policy
We may update this policy periodically to reflect application enhancements or regulatory requirements. Any updates will be published at this canonical web address with an updated effective date, and summarized in the Google Play Store release notes.
11. Contact information
Cristian Donet Segura — Umbrabyte Apps
Calle Pintor Camarón, nº 24
12560 Benicasim, Castellón, Spain
Tax ID (NIF): 20468489F
D-U-N-S® Number: 374071851
Email: support@umbrabyte.app
Website: https://umbrabyte.app
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support@umbrabyte.app