Privacy Policy for Spek

This Privacy Policy governs the Spek: Acoustic Spectrum Analyzer mobile application (referred to as the "App", "Spek", "we", "us", or "our"), developed and operated by Mobivera Labs (Package Name: com.mobiveralabs.spek).

We respect your privacy and are committed to protecting it. Spek is built from the ground up on an offline-first, privacy-preserving architecture. This document explains transparently what data the application interacts with, why certain system permissions are requested, and how your privacy is safeguarded.

We do not collect personally identifiable information (PII) such as your legal name, home address, personal phone number, contacts list, email address, physical location (GPS), or credit card details.

• No User Account: You can download and utilize all analysis capabilities without signing up, authenticating, or sharing any personal identity.
• No Audio Fingerprinting or File Telemetry: We do not log the filenames, audio metadata, acoustic signatures, or track tags of the music or sounds you analyze.
• Local Settings Only: Your display preferences (such as selected color palette, FFT window size, dB scale minimum/maximum range, and recent file references) are stored locally on your device using Android's sandboxed storage.

Acoustic spectrum analysis inherently requires interacting with audio sources. Here is our strict commitment regarding both audio files and live microphone input:

A. Stored Audio Files & Open-With Intents

When you select an audio file (e.g. FLAC, WAV, MP3, OGG, AAC) from your device or open an audio stream via another application:

• The file is opened solely via Android's secure Storage Access Framework (SAF) or native intent.
• The decoder unpacks audio samples in local memory to compute frequency bins.
• The audio file is never copied to external servers, never uploaded to third parties, and never modified.

B. Live Microphone Acoustic Analysis (RECORD_AUDIO)

Spek includes a real-time live spectrum analysis mode allowing you to visualize ambient acoustic frequencies via your device microphone:

• Strictly Ephemeral Processing: Live audio samples captured by the microphone are converted into spectral frequency amplitudes in volatile RAM memory and immediately discarded after drawing each visualization frame.
• No Audio Recording or Disk Writing: Microphone data is never written to an audio file, never saved to disk, and never transmitted over the network or shared with any entity.
• Revocable at Any Time: Microphone permission is requested at runtime on Android 6.0+ (API 23+) and can be disabled at any time in your system settings without affecting offline audio file analysis.

C. Spectrogram Image Export

When you choose to export or share a generated spectrogram:

• The graphic is rendered to an image file (e.g. PNG) stored locally on your device or passed directly to Android's native share sheet.
• We do not retain copies or transmit your exported spectrograms anywhere.

In accordance with Google Play Developer Policy, Spek requests only the minimal permissions required to deliver its core features:

To keep Spek free and accessible to audio enthusiasts and engineers worldwide, the App integrates Google AdMob to display advertising (such as Banner Ads, Interstitial Ads, App Open Ads, and optional Rewarded Ads).

The Google Mobile Ads SDK may automatically receive certain device and diagnostic data to serve ads and prevent fraudulent impressions:

• Pseudonymous Device Identifiers: Google Advertising ID (GAID / AAID) or similar device tokens.
• Technical Diagnostics: Device model, operating system version, carrier, general coarse geographic area (derived from IP address), and ad interaction statistics.
• Non-Intrusive Placement: Ads are configured to ensure they never compromise or interrupt live acoustic analysis or audio decoding.

For more details on Google's privacy practices regarding ads, please visit Google's Advertising Privacy Policies.

Any technical data processed by the application or integrated SDKs is used strictly for:

• Executing acoustic signal processing, Fast Fourier Transforms, and spectrogram visualizations locally.
• Serving advertisements and measuring ad engagement.
• Ensuring application stability, diagnosing unexpected software crashes, and optimizing rendering performance.
• Preventing fraudulent ad clicks, spam, or malicious application tampering.

Spek integrates trusted third-party SDKs provided by Google. Each third-party service operates under its respective privacy policy:

• Google Mobile Ads (AdMob): Ad delivery, mediation, and fraud prevention.
  Google Privacy Policy | AdMob & Privacy
• Google Play Services: Fundamental Android system APIs, runtime permissions, and library updates.
  Google Play Services Privacy
• Firebase Hosting: Hosts this official Privacy Policy web page securely over HTTPS.
  Firebase Privacy Information

Because Spek does not require an account or store personal information on remote servers:

• No Remote Data to Retain: We do not hold databases containing your identity, audio recordings, or personal data.
• Local Data Removal: All locally stored application settings, cache, and history can be removed at any time by clearing the App's storage via Android Settings → Apps → Spek → Storage → Clear Data, or by uninstalling the App.

We take modern security practices seriously to protect your device and data:

• All core processing is isolated within the sandboxed Android application environment.
• Network requests made by third-party advertising partners strictly use industry-standard HTTPS (TLS/SSL encryption).
• No unencrypted or sensitive audio feeds are broadcast over local networks or the internet.

Spek is a technical audio utility tool designed for audio engineers, producers, musicians, students, and audio enthusiasts. The App is not directed at children under the age of 13 (or under 16 in the European Union).

We do not knowingly collect or solicit personal information from children. If you are a parent or legal guardian and believe that your child has provided personal information to us, please reach out to us at mobiveralabs@gmail.com so we can take immediate corrective measures.

Depending on your jurisdiction (including the European Economic Area, United Kingdom, California, and other US states), you possess specific privacy rights:

• Right to Know & Access: You have the right to request information about what categories of data are processed.
• Right to Deletion: You have the right to request deletion of personal information (handled locally by uninstalling or clearing App cache).
• Right to Non-Discrimination: We will never discriminate against you for exercising any of your privacy rights.
• Right to Opt-Out of Sale / Targeted Ads: We do not sell your personal information. You can opt out of personalized advertising directly via your Android device's Google settings.

To submit an inquiry or exercise any rights under applicable privacy legislation, please contact us at mobiveralabs@gmail.com.

We may occasionally update this Privacy Policy to reflect modifications in software features, regulatory compliance, or operational practices. Any modifications will be published directly to this page with an updated "Effective Date" at the top of the policy.

We encourage you to review this policy periodically. Continued use of Spek after any changes are published signifies your acknowledgment and acceptance of the revised terms.