Caudal — Privacy Policy

• Email address— used solely for sign-in (we send you a one-tap “magic link” instead of using a password). Required.
• Display name, first/last name, and unit-system preference— optional fields you can set in Profile.
• Guide or business credit fields(business name, Instagram handle, website) — optional. When set, these appear on Caudal Cards you share.

• Hand calibration measurements— distances (in millimeters) between named joints on your hand, derived on-device from your calibration photo. These measurements are stored only on your device and are never transmitted to us or to the cloud; the photo itself is likewise never stored or transmitted (see Section 4).
• Catch records— for each fish you save: species, length, weight (estimated and optional measured), body depth, the date and time the photo was taken, and optional fields you may add (lure or fly used, body of water, notes).
• Optional location data— latitude and longitude of where the photo was taken, plus reverse-geocoded place name. Only collected if you have granted location permission to Caudal in your phone’s settings. Off by default.
• Optional environment data— weather conditions, moon phase, and tide for the date/time/location of the catch. Looked up automatically when you save a catch with location.
• Other Anglers— names and hand calibration measurements you save for additional people whose catches you measure. These records stay only on your device (see Section 3).

• Support communications— if you contact us for help or to report a problem by email (support@phalanxfishing.com), we receive whatever you choose to send: your email address, the content of your message, and any attachment you include. Sending an attachment is entirely optional.
• Screenshots you send— a screenshot of a measurement can contain the fish photo and, if you have enabled Location Services, the catch’s location. We use anything you send only to investigate and resolve your issue and to improve the App, and we retain it only as long as needed for those purposes.

We do not collect device identifiers (IDFA, advertising ID), do not run analytics SDKs, do not track which screens you visit or which buttons you tap, do not collect crash reports, and do not collect any information that would let us build a behavioral profile of you.

Fish photos and calibration photos are processed entirely on your device. Except through the optional Training Mode described below, they are never uploaded to our servers and never sent to any third-party AI, analytics, or storage service. The photos live in this App’s local storage and, if you have enabled the “Save original photos” toggle in Profile, in your phone’s photo library.

Your catch photos are not part of the cloud backup. Signing in backs up the text and numbers of your catch log so it survives a reinstall; the photographs themselves stay on the device that took them.

Training Mode is an optional program that lets invited users contribute catch photos and measurements to help improve Caudal’s measurement models. It is available only to users we specifically invite, and it is off by default even then. If we invite you and you choose to turn it on, the App uploads the photos and associated measurements for catches you save while it is enabled to our secure cloud storage (Supabase), stored privately under your account. On Android, photo uploads wait for an unmetered network unless you allow uploads over cellular. You can turn Training Mode off at any time; while it is off — its default state — no photos are uploaded. Unless you have been invited into Training Mode and have turned it on, no photo ever leaves your device.

The hand-calibration photo you take during setup is processed on this device to derive per-finger millimeter measurements. The photo is then discarded — only the derived numeric distances (e.g., “wrist to index knuckle = 95 mm”) are stored. We never send a photo of your hand anywhere, and the photo is not saved to your phone’s photo library unless you have enabled the “Save original photos” toggle.

The App extracts the following metadata from your photos, entirely on this device, so that measurement and logging work correctly:

• EXIF orientation— so the on-device computer-vision models analyze the photo right-side-up
• EXIF capture date (DateTimeOriginal)— so the catch is logged with the date the photo was actually taken (this is what makes “use an old photo” accurate)

We do not extract or transmit any other EXIF fields (camera model, exposure settings, etc.). Photo GPS data is not read from EXIF — when location is logged with a catch, it comes from your phone’s current location services, not from the photo’s metadata.

• What we share:email address (for sign-in), display name, catch records (the text and numeric fields described in Section 2). We never transmit your hand calibration measurements — they stay on your device.
• Why: stores your account data so it survives a reinstall and syncs across your devices signed in to the same account.
• What they don’t receive: photos (with the sole exception of catch photos you contribute through the optional, invitation-only Training Mode described in Section 4), Other Angler data, test-mode data.
• More info: supabase.com/privacy

• What we share:the latitude, longitude, and timestamp of a catch — only when you have enabled location and saved a catch.
• Why: looks up the weather conditions for that date, time, and place so they can be saved on the catch record.
• What they don’t receive: your identity, your email, your account, any other catch data, or any photo. Open-Meteo is a public, no-account, no-API-key service.
• More info: open-meteo.com/en/terms

• What we share:the latitude, longitude, and timestamp of a catch — only when you have enabled location and saved a catch.
• Why: looks up the tide height, trend, and nearest tide station for that date, time, and place so they can be saved on the catch record.
• What they don’t receive: your identity, your email, your account, any other catch data, or any photo.
• More info: worldtides.info/privacy

On iPhone, the App uses Apple’s Vision, CoreML, AVFoundation, CoreLocation and SwiftData frameworks. On Android, it uses Google’s MediaPipe Hands for hand-pose detection, ONNX Runtime for the fish detection and species models, CameraX for camera capture, and Room for local storage. These run on your device under their standard SDK terms.

• This is the one on-device library that reports anything back. Each time hand detection runs on Android, MediaPipe sends anonymous usage statistics to Google. This is built into the library; there is no setting that turns it off, and we cannot disable it.
• What is sent:our app’s package name and version, the MediaPipe library version, the name of the detection being run, and performance figures such as how long it took, how many frames were processed, and whether it failed.
• What is NOT sent: your identity, your account, your email, your location, your photos, your catch data, or any hand measurement. Nothing that identifies you or your device is included.
• Why:Google uses it to monitor the performance and reliability of the library. Google’s handling of this data is governed by the Google Privacy Policy.

Moon phase for a catch’s date and location is computed entirely on your device with no network call.

• Sign out:Profile → Sign out. This signs you out on this device. Your cloud-stored data is unaffected; signing back in restores it.
• Location:
  • On iPhone — Settings → Privacy → Location Services → Caudal.
  • On Android — Settings → Apps → Caudal → Permissions → Location.
  Turn off to stop including location with new catches.
• Save original photos:Profile toggle. Off by default; when on, Caudal saves your fish photos to your phone’s photo library in addition to its own local storage.
• Edit a catch’s metadata: tap any catch in the Log and use the Edit button. You can correct the capture date, location, species, or any other field at any time.
• Delete a catch:long-press a catch in the Log → Delete. The catch is removed from both your device and your cloud account.
• Delete your account:Profile → Delete account. This permanently and immediately removes your account and catch log from our cloud, and clears your account record, hand calibration, and catch log from this device.

You can delete your account and all associated cloud data at any time directly in the App: Profile → Delete account. This permanently removes your account and catch log from our cloud and clears your account, hand calibration, and catch log from this device. You may also request deletion, or a copy of your data in a portable format (JSON or CSV), by emailing support@phalanxfishing.com from the address associated with your account. We respond within 7 business days and complete deletions within 30 days.