DATA COLLECTION
PhosphorFeld does not collect, store, or transmit any personal data. The app does not require an account, registration, or sign-in of any kind.
MICROPHONE ACCESS
PhosphorFeld uses your device's microphone to capture audio for real-time Hellschreiber signal decoding. All audio processing occurs entirely on-device in real time. Audio is not recorded, stored, or transmitted. No audio data ever leaves your device. The app does not function without microphone permission, but no data is collected regardless of whether permission is granted.
NETWORK REQUESTS
PhosphorFeld makes no network requests of any kind. The app does not connect to the internet. There are no servers, no APIs, no telemetry endpoints. It is entirely offline.
LOCAL DATA STORAGE
PhosphorFeld stores decoded glyph strip images (as PNG files) and user preferences (theme, display parameters, decode settings) locally on your device using standard iOS mechanisms. This data never leaves your device and contains no personal information beyond the decoded radio signals you chose to receive.
ANALYTICS AND TRACKING
PhosphorFeld does not include any analytics frameworks, crash reporters, advertising SDKs, or third-party tracking of any kind.
THIRD-PARTY SERVICES
PhosphorFeld uses no third-party services, SDKs, or frameworks. The app is built entirely with Apple's native frameworks (AVFoundation, Accelerate, SwiftUI).
CHILDREN'S PRIVACY
PhosphorFeld does not collect data from anyone, including children.
CHANGES TO THIS POLICY
If this policy changes, the updated version will be posted here with a revised date.
CONTACT
If you have questions about this privacy policy, please open an issue on the PhosphorFeld GitHub repository.
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