Privacy Policy & Legal Terms

1 Overview & Developer Identity

Welcome to Smart Ruler Pro (the "Application"), developed, published, and maintained by Shuttle Technologies ("Developer", "we", "our", or "us").

Shuttle Technologies is committed to upholding the highest standards of digital privacy, data security, and consumer trust. This Privacy Policy and Legal Terms document governs your use of the Application and clearly outlines our strict on-device data processing model, system permissions justification, advertising disclosures, and legal terms of use.

Core Privacy Principle: Smart Ruler Pro operates fundamentally as an offline, on-device utility. We do not operate user accounts, cloud tracking databases, remote logging servers, or behavioral monitoring profiles.

2 Zero Personal Data Collection (Strictly On-Device Processing)

We believe your physical measurements and device environment are strictly private. The Application is engineered from the ground up to ensure zero transmission of user-generated data:

No Personal Identifiers: We do not collect names, email addresses (unless you explicitly contact our support desk), phone numbers, physical locations, or contacts.
No Audio or Camera Recording: Smart Ruler Pro does not record, access, buffer, or transmit microphone audio or camera imagery during measurement operations.
No Measurement Harvest: Object dimensions, caliper coordinates, area calculations, protractor angle values, and calibration factors are computed strictly in volatile system RAM and never uploaded to remote servers.
Zero Sensor Surveillance: Real-time hardware accelerometer, gravity, and touch-digitizer data are consumed ephemerally for on-screen visualization and discarded immediately.

3 Android System Permissions & Purpose

To deliver laboratory-grade tactile feedback, display calibration, and non-intrusive operations, Smart Ruler Pro declares only essential permissions. Each declared permission is strictly justified below:

Permission Name	API Scope	Technical Purpose & Legal Justification
`android.permission.INTERNET`	Network	Required solely for Google AdMob SDK network communications to load advertisements and Google Play Store redirection links.
`android.permission.ACCESS_NETWORK_STATE`	Network State	Enables the Google AdMob SDK to check whether an active internet connection is available before requesting ads, conserving device battery and mobile data.
`android.permission.VIBRATE`	Hardware / Haptics	Used strictly to invoke tactile micro-haptic tick pulses (via `Vibrator` / `VibratorManager`) as calipers slide across millimeter and inch graduation marks. Can be disabled anytime in Settings.
`android.permission.WAKE_LOCK`	Power Management	Enables the user-controlled "Keep Screen Awake" preference (`FLAG_KEEP_SCREEN_ON`) so the display does not timeout or dim while the user is actively measuring physical objects.

Smart Ruler Pro does not request high-risk permissions such as RECORD_AUDIO, CAMERA, ACCESS_FINE_LOCATION, READ_CONTACTS, READ_EXTERNAL_STORAGE, or POST_NOTIFICATIONS.

4 Local Storage & User Data Ownership

Smart Ruler Pro saves application preferences (such as selected unit type, visual theme mode, tactile haptic toggles, screen-awake state, and hardware calibration scale factors) exclusively in local, sandboxed Android SharedPreferences.

100% User Ownership: All saved preferences remain entirely under your control on your local device.
Private Application Sandbox: Preference files are isolated within the app's internal sandbox and inaccessible to other third-party apps without root access.
Complete Deletion: You can permanently wipe all stored preferences at any time by selecting "Clear Storage / Clear Data" in your Android system Settings or by uninstalling the Application.

5 Third-Party Advertising & Google AdMob Disclosure

To support ongoing engineering, compatibility updates with modern Android versions (including API Level 36), and free distribution, Smart Ruler Pro displays banner and native ads via the Google AdMob SDK (provided by Google LLC).

Google Advertising ID (AAID): Google AdMob may collect and process pseudonymous identifiers, such as the Android Advertising ID, IP address, general approximate device location, and interaction events to serve contextual or personalized advertisements.
Zero Access to Ad Data: Shuttle Technologies does not operate ad-tracking databases and has no access to your individual advertising profiles.
User Opt-Out Instructions: You have full statutory and system control to limit ad tracking or reset your Advertising ID directly via your Android device:
Settings > Privacy > Ads > Reset Advertising ID or Delete Advertising ID.

For complete details on Google's data practices, please review the Google Advertising Privacy & Terms.

6 Children's Privacy (COPPA & Global Standards)

Smart Ruler Pro is a technical measuring instrument intended for general audiences, professionals, technicians, students, and craftsmen. It is not targeted at children under the age of 13 (or under 16 in certain European jurisdictions).

We do not knowingly collect, solicit, or store personal information from children. If a parent or guardian becomes aware that their child has provided personal information to third-party ad networks through our application without consent, please contact us immediately, and we will take necessary measures to assist.

7 Statutory Privacy Rights (GDPR & CCPA/CPRA)

Depending on your geographic residency, you are entitled to specific statutory privacy rights under regulations including the General Data Protection Regulation (GDPR), the California Consumer Privacy Act (CCPA), and the California Privacy Rights Act (CPRA):

Right to Know & Access: You have the right to request disclosure of what personal data is collected or processed. As stated, Shuttle Technologies collects zero personal data on its servers.
Right to Deletion: Because all data is stored strictly on your local device, uninstalling the app or clearing application cache completely purges all data instantly.
Right to Non-Discrimination: We will never discriminate against you or degrade app functionality for exercising any privacy rights.
"Do Not Sell or Share My Personal Information": Shuttle Technologies does not sell, lease, or broker personal information to data brokers or third parties.

8 Comprehensive Legal Disclaimer & Precision Notice

GENERAL REFERENCE & INFORMATIONAL PURPOSES ONLY: Smart Ruler Pro utilizes the consumer-grade capacitive touch digitizer, glass surface, and firmware display metrics (xdpi/ydpi) of your mobile phone. While our dual-caliper and 1-touch card calibration algorithms achieve sub-millimeter digital resolution, mobile devices are inherently subject to physical constraints, glass thickness, parallax error, capacitive touch interpolation tolerances, and screen protector interference.

No Laboratory or Statutory Certification: The Application is NOT certified as a legal-for-trade, Class 1 / Class 2 industrial vernier caliper, ISO-standard metrology gauge, medical diagnostic device, or statutory land surveying instrument.
No Substitution for Certified Hardware: Measurements generated by Smart Ruler Pro must never be substituted for calibrated mechanical calipers, micrometers, or certified tools in structural engineering, aviation, architecture, mechanical fabrication, medical dosing, or life-critical applications.

LIMITATION OF LIABILITY & "AS IS" PROVISION: THE APPLICATION IS PROVIDED ON AN "AS IS" AND "AS AVAILABLE" BASIS WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, PRECISION, OR NON-INFRINGEMENT. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, SHUTTLE TECHNOLOGIES, ITS DEVELOPERS, AND AFFILIATES SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, SPECIAL, PUNITIVE, OR REGULATORY DAMAGES ARISING OUT OF THE USE OF, INABILITY TO USE, OR RELIANCE UPON MEASUREMENTS, ANGLES, OR CALCULATIONS OBTAINED FROM THIS APPLICATION.

Non-Admissibility Notice: Data, screenshots, or measurements generated by Smart Ruler Pro may not be utilized as certified judicial, forensic, building inspection, or contractual evidence in contentious legal or regulatory proceedings.

9 Terms of Use & Intellectual Property

All title, ownership rights, intellectual property, source code, visual design systems, vector caliper assets, brand logos (including AppLogo), themes, and algorithms in Smart Ruler Pro remain the exclusive property of Shuttle Technologies.

Personal License: You are granted a personal, non-exclusive, non-transferable, revocable license to use the Application on compatible Android devices in accordance with Google Play Terms of Service.
Restrictions: You may not decompile, reverse engineer, disassemble, modify, create derivative works of, or distribute copies of Smart Ruler Pro without prior written authorization from Shuttle Technologies.

10 Contact Information & Support

If you have any questions, feedback, bug reports, or inquiries regarding this Privacy Policy and Legal Terms, please contact our engineering support team directly:

Shuttle Technologies

Mobile Engineering & Measurement Utilities Division

ved.om9563@gmail.com

Developer Portfolio: Shuttle Technologies on Google Play