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Tagbook Privacy Policy

Last updated: November 10, 2026

Summary

Cattle Records: Tagbook (“Tagbook”) is an iPhone app operated by Harsh Patel. It keeps a cattle ranch’s herd records. It has no accounts and does not ask for your email. Your ranch’s records are stored on your iPhone and in the ranch’s own iCloud, and they go to other people only when the owner shares the ranch or you export a file yourself. We do not operate a server that stores your records, we cannot read them, and we do not sell data, show ads or track you across other companies’ apps or websites. There’s no ATT prompt, no data broker and no ad network.

Your ranch records

  • The ranch: its name, its brand, tag colors, the calf rule, pastures, your products and your dates.
  • The herd: each animal’s tag, class, breed, birth, name, mother, sire, pasture, status and photo.
  • Entries: calvings, shots with the product, dose, lot and the withdrawal days you entered, weights, moves, preg checks, notes with their photos, and group work.
  • Who and when: every entry and every change is kept with the name the person gave and the time.
  • Settings on this iPhone: your reminder choices, your last known subscription status, a record of the one time welcome offer window, and notes from a spreadsheet import. The offer record is kept in the iOS Keychain on this iPhone so it survives reinstalling the app.

Ranch records: animals, tags, calvings, Shots and withdrawal dates, weights, moves, preg checks, notes, photos, Works, Papers, PDFs and CSV exports. They stay on the device and in the ranch’s own iCloud zone, and are shared only with the people the owner adds.

iCloud and the shared ranch

  • The ranch’s iCloud. Tagbook uses Apple CloudKit to keep the ranch’s records in iCloud, so they are backed up and come back on a new iPhone. They go to the owner’s own private iCloud zone, and to the people the owner shares the ranch with. The developer can’t read them.
  • Sharing with family and hands. The owner can share the ranch through Apple’s iCloud sharing.
    • Everyone the owner invites sees the ranch’s animals, entries, notes and photos, and their own entries are signed with the name they give.
    • Apple’s sharing shows the people on the ranch by the names on their Apple Accounts.
    • Only the owner adds or removes people. Leaving a ranch removes it from that iPhone only.
  • Erasing. Settings > Records safety > Erase this ranch deletes the ranch from the owner’s iPhone and iCloud for everyone on it, and stops the sharing.

Camera, photos, imports and notifications

  • You can take a photo or choose one from your photo library to keep with an animal or a note. Only the photos you pick are added.
  • Imports: a spreadsheet’s file name and its skipped rows stay on this iPhone. They are kept for each ranch on this iPhone only: never synced, never sent to analytics, and forgotten on Erase and on Leave.
  • Notifications: local only, with no push server. They show only the rancher’s own date text.
  • Change camera, photo and notification access anytime in iOS Settings.

What Tagbook does not access

Contact info, user content and location: none is collected. Tagbook does not use your location, contacts, calendar, health data, your Messages or Mail, or bank accounts, and it does not read RFID tags or connect to scales.

Data we collect

The data is pseudonymous: there’s no account, name, email or phone. It counts as linked in Apple’s sense because two identifiers are joined: a random analytics ID for your install and a random RevenueCat customer ID. It is not used for tracking: Tagbook has no ads, does not use the advertising identifier (IDFA), does not ask to track you, and does not share data with data brokers or advertisers.

  • Product Interaction: which steps you complete in the app, from a fixed list of events. Every value is a closed token, bucket or count. Sent to PostHog. Purpose: analytics.
  • Purchase History: your subscription status, trials, renewals and cancellations, from Apple’s signed purchase records via RevenueCat. The owner’s iPhone also writes the ranch’s Tagbook Pro status into the ranch’s own iCloud, so the people on the ranch are covered. Purposes: app functionality, analytics.
  • User ID: a random app user ID created by RevenueCat and a random analytics ID created by PostHog, joined so subscription events appear in the product funnel, plus a random ID made when a ranch is created, so the people on one ranch can be counted together. None of them is your name, email or Apple Account, and none is made from anything you type. Purposes: app functionality, analytics.
  • Device ID: the identifier for vendor (IDFV) that the RevenueCat SDK sends with its requests. It is not the advertising identifier. Purposes: app functionality, analytics.
  • Advertising Data: Apple’s AdServices attribution token. Tagbook sends it to Apple, and to RevenueCat, to learn whether the install came from an Apple Ads campaign. Only the outcome and the numeric campaign, ad group and keyword ids are kept. Purpose: analytics.
  • Crash Data: crash reports from Apple’s MetricKit (crash kind, exception type and code, signal and app build), sent as PostHog events. Purposes: app functionality, analytics.
  • Performance Data: hang reports from MetricKit (how long the app was unresponsive and the app build), sent as PostHog events. Purposes: app functionality, analytics.

What analytics contain. Analytics come from a fixed list of events and properties; anything else is dropped before sending. They include the app version, whether a subscription is active, which kind of entry was saved, and counts in ranges. Autocapture, screen views, lifecycle capture, session replay and flag preload are all off. PostHog’s location lookup is turned off, so PostHog doesn’t turn the IP into a place and analytics carry no country or city. Never sent: tag numbers or colors, animal names or breeds, the ranch’s name or brand, pastures, people’s names, notes, products, doses, lots, withdrawal days, your dates’ text, CSV headers or file names, weights, or the date and time of an entry.

Payments. Payments go through Apple In App Purchase; we never receive your payment card details. RevenueCat checks your subscription for us; its privacy policy is at revenuecat.com/privacy. PostHog’s is at posthog.com/privacy.

Exports

Herd list and history PDFs, CSV files and the Export everything zip are created on your iPhone. When you share one, iOS sends it to the destination you choose, such as Files, Mail or Messages. Tagbook does not record where you send it.

Retention and deletion

  • The ranch stays on your iPhone and in iCloud until the owner erases it in Settings > Records safety, or deletes the app and its iCloud data.
  • Exported files, purchase history and the Keychain offer record are separate:
    • manage iCloud data and subscriptions in Apple Settings;
    • remove people or leave a ranch in the app;
    • delete exported copies where you saved them.
  • We keep analytics only as long as it is useful for improving the app. Email us to ask for deletion of analytics data. Because it is not tied to your name, tell us roughly when you installed Tagbook and your device model so we can find it.

Children

Tagbook is meant for ranchers and is not directed to children under 13. We do not knowingly collect personal information from children.

Changes

If our data practices change, we will update this page and the date above, and update the app’s App Store privacy details.

Contact

Questions, complaints or data requests: harshp.build@gmail.com