USAGE TERMS AND PRIVACY POLICY (Fast Ruler)
# Terms of Service & Privacy Policy
**Last Updated: August 23, 2026**
Welcome to **Fast Ruler** (hereinafter referred to as "this App").
By installing and using this App, you agree to the Terms of Service
and Privacy Policy outlined below. We are committed to protecting your privacy
while providing a precise, clean, and intuitive digital ruler measurement experience.
---
### 1. Information Collection & General Principles
We believe your measurement data, local preferences,
and application settings belong to you alone.
* **No Personal Data Collection:**
This App does not collect, harvest, or request any Personally Identifiable Information (PII)
such as your name, email address, phone number, contacts, or location data.
* **Local-First Storage & Processing:**
All custom configurations, unit preferences, screen calibration settings,
and user settings are created, saved, and processed locally on your device.
We do not upload your measurement data or preferences to our servers.
---
### 2. Data Processing & Extreme Local Privacy
This App is designed with a strict "local-only" architecture for personalization and utility:
* **Zero Cloud Exposure:**
Screen calibration ratios, unit system preferences (metric/imperial),
haptic feedback settings, and screen-on preferences
operate completely within the memory of your local device.
* **No Measurement Data Transmission:**
All ruler measurement operations are conducted strictly in-memory.
We do not transmit, record, or store any measurement results on external servers.
---
### 3. Data Usage & Third-Party Services
To support ongoing app development, maintenance, and stability,
this App integrates with a limited number of industry-standard third-party services.
These services may collect anonymous or pseudonymous identifiers:
#### A. Advertising (Google AdMob)
This App displays advertisements powered by Google AdMob.
* **Data Collected:** AdMob may collect and use pseudonymous device identifiers
(such as the Advertising ID) to display relevant or personalized advertisements.
* **Purpose:** To support the continuous development and free distribution of the app.
* **Privacy Policy:** https://www.google.com/policies/privacy/partners/
#### B. Analytics, Crashlytics & Remote Config (Google Firebase)
We use Firebase Analytics, Firebase Crashlytics, and Firebase Remote Config
to understand user interaction, troubleshoot crashes, and update app settings:
* **Data Collected:**
Anonymous usage statistics (e.g., app sessions, feature triggers, or screen views) and crash stack traces.
* **No Private Data Leaked:**
No measurement data, calibration values, or sensitive user configurations are ever included in the logs or analytics.
* **Purpose:**
To debug system crashes, optimize app performance, and enhance the overall user experience.
* **Privacy Policy:**
https://firebase.google.com/support/privacy
---
### 4. Required Device Permissions & Access
To provide standard digital ruler measurement operations, this App requests only the necessary permissions:
* **Screen Wake Lock:**
Required to keep the device screen on during active measurement sessions,
preventing the screen from turning off while you are using the ruler.
* **Internet & Network Access (INTERNET, ACCESS_NETWORK_STATE):**
Required for displaying advertisements (Google AdMob), checking remote config settings
(Firebase Remote Config), and transmitting anonymous crash/analytics logs.
* **No Sensitive Permissions Required:**
This App does not request or require access to your camera, microphone,
physical GPS location, external file storage, photos library, contacts, or phone logs.
---
### 5. Data Security
We implement strict physical, electronic, and procedural safeguards:
* **Secure Communication:**
All communication with Firebase and AdMob is encrypted via secure HTTPS protocols.
* **No Server-Side Databases:**
Since we do not maintain cloud storage databases of your measurement data or user preferences,
your data is completely safe from server-side leaks and hacking attempts.
---
### 6. User Rights & Privacy Controls
You have full control over your privacy and device permissions:
* **Reset Ad Identifier:**
You can opt-out of personalized ads or reset your Advertising ID via your device's native Google account settings.
* **Clear App Cache & Data:**
You can delete all local preferences, calibration settings, and cached app state through your system's App Settings.
---
### 7. Acceptance of Terms
By downloading or using this App, you agree to comply with and be bound by these terms.
If you do not agree, please do not use the app.
---
### 8. User License & Content Ownership
* **100% User Ownership:**
You retain full ownership of any settings, calibration values, or measurement preference choices created within this App.
* **Permitted Use:**
You are granted a personal, non-transferable, non-exclusive license to use the app for
digital ruler measurement, screen calibration, and related utility purposes.
You may not copy, reverse-engineer, modify, or redistribute any part of our app code or assets.
---
### 9. Disclaimer of Warranties & Limitation of Liability
* **"As-Is" Service:**
This App is provided "as is" and "as available" without warranties of any kind,
either express or implied.
* **Measurement Disclaimer:**
This App is designed for general-purpose digital measurement assistance.
Measurement accuracy depends on proper screen calibration and may vary by device.
It is not intended as a certified precision measurement instrument
and should not be used as a substitute for professional measuring tools
in contexts requiring exact measurements (e.g., construction, engineering, or medical applications).
* **No Liability for Loss of Data:**
While we take extreme care to implement reliable performance,
we are not liable for any issues or data loss arising from app uninstallations or device failures.
---
### 10. Changes to Terms
We reserve the right to modify these terms at any time. When we make updates,
we will post the revised version with an updated "Last Updated" date at the top.
Your continued use of the app after changes are posted constitutes your acceptance of the new terms.
---
### 11. Contact Us
For any privacy inquiries or feedback regarding these terms:
* **Email:** hardcoresoftcompany@gmail.com
* **Website:** https://hardcoresoftcompany.blogspot.com