Minimalist Offline Hydration Tracker & Intake Analytics
A fluid, distraction-free hydration logger. Quick-add beverage presets, calculate smart daily targets, and review 7-day intake trends completely offline.
Capabilities
Designed for Reliability & Autonomy
Every feature runs locally on your Android device without requiring internet access or account credentials.
1-Tap Beverage Presets
Quickly log water, mineral fluids, herbal tea, coffee, and electrolytes with pre-configured 250ml, 500ml, and 750ml increments.
Daily Target Calculator
Dynamically compute recommended daily hydration quotas based on body weight, climate factors, and planned daily physical activity.
7-Day Trend Visualizer
Track intake consistency, streak milestones, and volume averages over time using beautiful on-device bar charts.
Intake Timeline Journal
A timestamped chronological feed of every logged beverage with volume breakdowns and daily target percentage updates.
Zero Permissions.
Zero Compromises.
Most modern mobile apps request intrusive permissions: Internet access, fine location, contacts, and camera access. HydroFlow requests zero permissions.
No <uses-permission> Tags
The Android Manifest declares no permissions. The OS cannot grant network or device access even if an exploit were attempted.
Device Sandbox Isolation
All databases and configurations are held strictly inside Android's protected app sandbox directory.
Permanent Purge on Uninstall
Uninstalling the app instantly wipes 100% of data. No remnants remain on any remote cloud server.
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="net.aquatrack.hydroflow">
<!-- ZERO <uses-permission> TAGS DECLARED -->
<!-- ZERO NETWORK ACCESS -->
<!-- ZERO CAMERA OR STORAGE ACCESS -->
<application
android:label="HydroFlow"
android:icon="@mipmap/ic_launcher">
<activity
android:name=".MainActivity"
android:exported="true">
</activity>
</application>
</manifest>Knowledge Base
Frequently Asked Questions
Does HydroFlow require an internet connection?▼
No. HydroFlow operates 100% offline. It has no internet permission declared in its manifest, meaning it physically cannot make network requests or reach external servers.
Where is my data stored?▼
All your data, logs, and configurations are saved strictly in your device's private application sandbox. It never touches external cloud storage or telemetry servers.
Are there any subscriptions or hidden paywalls?▼
No. There are zero subscription fees, zero advertising SDKs, and zero locked screens. All features are immediately available upon launching the application.
How can I back up or transfer my data?▼
Because the application has zero network access, backups can be exported locally through the app's built-in export features or managed via standard Android OS device backups.
What happens when I uninstall the app?▼
When you uninstall HydroFlow, the Android operating system completely purges the application's sandbox directory, destroying all local records immediately.
Ready to Experience Private, Barrier-Free Software?
Install HydroFlow directly onto your Android device. Instant setup, zero logins, and complete peace of mind.