Privacy Policy
The short version
SkyFi is built around a single principle: your camera frames never leave your device. Every pixel is processed on your iPhone's Neural Engine and GPU. No frames are uploaded, no accounts exist, no analytics SDKs are bundled, no advertising identifiers are used, no network requests are made.
1. Who we are
SkyFi ("the app", "we", "our") is an iOS application that overlays real-time AI-segmented sci-fi effects on the device's camera feed. This privacy policy describes how the app handles user data.
For privacy questions, contact support@skyfi.example.
2. What SkyFi accesses
Camera
SkyFi requests access to your device's camera in order to display the live preview, run on-device neural segmentation against each frame, and composite the lens effect. iOS will prompt you for camera permission the first time you open the app. You can revoke it at any time from iOS Settings → Privacy & Security → Camera → SkyFi.
How camera frames are used: Each frame is delivered by AVFoundation as a CVPixelBuffer, run through Apple's Core ML & Vision frameworks for sky segmentation, rendered through Metal and Core Image to produce the lens composite, and shown on screen. When you tap the shutter, the composited output is encoded to H.264 and written to a temporary file on the device.
What is not done with camera frames: they are never uploaded to any server, not sent to any third party, not stored anywhere on the device outside the temporary recording file (which is only created while you are actively recording), and not used for training any model.
Photo Library (Add Only)
If you record a video, SkyFi requests "Add Only" photo library access in order to save the recorded file to your Photos. iOS will prompt you the first time you save a video. You can revoke it at any time from iOS Settings → Privacy & Security → Photos → SkyFi.
"Add Only" access means SkyFi can only write new videos. It cannot read or view any of your existing photos or videos.
After the recording is added to Photos, the temporary file SkyFi created in its own sandbox is immediately deleted.
Photo Library (Read)
SkyFi does not request read access to your photo library at any time.
Location, Microphone, Contacts, Health, Calendar, etc.
SkyFi does not access any of these. The app's Info.plist does not declare any related usage strings.
3. What SkyFi does NOT do
- No accounts, no sign-in, no user identity tracking.
- No third-party analytics SDKs (no Firebase, no Mixpanel, no Amplitude, no Segment, etc.).
- No advertising SDKs and no advertising identifier (IDFA) usage.
- No App Tracking Transparency prompt — because SkyFi does not track.
- No crash-reporting SDKs that transmit identifiable data. Standard Apple-system crash reporting (visible to you in iOS Settings) functions if you opt-in to it at the system level.
- No network calls. The app contains no HTTP client, no WebSockets, no background sync — at all.
4. AI model & on-device processing
SkyFi bundles Apple's official DETR-ResNet50 Semantic Segmentation Core ML model (palette-quantized F16, ~41 MB) for sky detection. This model is pre-trained on the publicly available COCO dataset and is used in inference mode only — it is not fine-tuned, retrained, or updated using your camera frames.
The model runs on Apple's Neural Engine via the Core ML framework. No data is shared with Apple, Hugging Face, or any other party as part of running the model.
5. Children's privacy
SkyFi does not collect any personal data from anyone, and the app is rated 4+ in the App Store. It is suitable for users of any age. We do not knowingly collect, store, or share personal data from children under the age of 13 (or the equivalent minimum age in your jurisdiction) — because we do not collect personal data from anyone.
6. Your rights
Because SkyFi does not collect any personal data, there is no data to access, correct, port, or delete. You have absolute control via iOS Settings to revoke camera or photo-library permission at any time, or to delete the app and remove all of its local storage.
If you are a user in the European Economic Area (GDPR), the United Kingdom (UK GDPR), or California (CCPA / CPRA): the rights granted to you by those regulations are protected by virtue of SkyFi not collecting data in the first place.
7. Changes to this policy
If a future version of SkyFi changes any of the above — for example, if a new feature requires network access or third-party services — this page will be updated and the "Last updated" date at the top will be incremented. Material changes will be summarized in the corresponding App Store release notes.
8. Contact
For privacy questions, data-protection inquiries, or to report a concern, contact:
- Email: support@skyfi.example
- Or via the support page.