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Privacy Policy

Last updated September 27, 2026

The short version

Tax Days has apps for iPhone and Android. Both apps keep your trips, jurisdictions, and location history on your device. There is no Tax Days account, we don’t run a server that holds your day counts, we don’t know where you’ve been, and we don’t sell your data. A small amount of data does leave your device: place-name lookups, crash reports, feedback you choose to send, a record of subscription purchases tied to a random install ID, and, on iPhone, a one-time Apple Ads attribution check. This policy lists each one, who receives it, how long it is kept, and how to delete it. On iPhone, if you use iCloud, your data also syncs through your private iCloud database, and on Android it can be included in your Google Account backup. Parra cannot read either copy.

What stays on your device

  • Trips, jurisdictions, rules, and reports, stored in a local database on your device. On iPhone, when you are signed in to iCloud, this data also syncs through your private iCloud database (CloudKit), which Parra cannot read. The Android app has no cloud sync.
  • Location readings, the approximate coordinates, time, and place name of each reading the app records, used only to build your trip history. See “Location, including in the background” below.
  • Settings and app state, such as your notification preferences, a record of which alerts you have already seen, and the random install ID described below.
  • Android backup, if it is on for your device. Android’s backup service can copy the app’s database, preferences, and install ID to a private area of your Google Account so they can be restored on a new phone. On Android 9 and later, when your device has a screen lock (a PIN, pattern, or password), that backup is end-to-end encrypted with it. Parra cannot access the backup either way.

What leaves your device, and who receives it

  • Place-name lookups.When the app records a location reading, it sends that reading’s approximate coordinates to a geocoding service to find the country, state or region, and city. On iPhone this is Apple’s geocoding service. On Android it is the geocoder built into your device, which on most phones is provided by Google. We never receive these coordinates.
  • Crash reports. Both apps use Firebase Crashlytics, a Google service, to report crashes, and the Android app also uses it to report some errors it recovers from. A report contains technical details of the problem (the stack trace, device model, operating system, and app version) and two random identifiers created by Firebase: a Crashlytics installation UUID and a Firebase installation ID. Crashlytics also notes when a session starts, so it can measure how often the app crashes. Reports never contain your trips or locations. Crash reporting is on in the store versions of both apps and has no in-app switch.
  • Store diagnostics.On iPhone, if you turn on Share With App Developers in Settings → Privacy & Security → Analytics & Improvements, Apple gives us aggregated crash and usage data through App Store Connect. On Android, if your device shares usage and diagnostics data with Google, Google Play gives us aggregated crash and performance data.
  • Feedback you send. When you use Send Feedback in Settings, the app sends your message, the category you chose, your email address if you enter one, and basic device details (app version and build, operating system version, device model, and language and region setting) to our server, which passes them to RevenueHog, the service we use to read and answer feedback. Feedback is not stored in our own database.
  • Purchases. Tax Days Pro is sold through the Apple App Store on iPhone and through Google Play on Android. The store handles the payment and tells the app which subscription is active so it can unlock Pro. We never see your card or other payment details.
  • Subscription records.When you start a trial or buy Pro, the app sends our server a record of it: the random install ID, the event (a trial start or purchase, and on iPhone also a renewal or refund), the product and plan, the store’s transaction or order ID, the price and currency, the purchase date (and on iPhone the expiry date), and the app version. On both platforms we use these records to count revenue by product and plan. On iPhone we also join them to the Apple Ads attribution record below to learn which ads lead to subscriptions. They contain no payment details, trips, or locations. On Android, the app also gives Google Play the same install ID with each purchase so the two records can be matched. On iPhone, Apple also sends our server notices of renewals, refunds, and other subscription changes; those carry the transaction details but no install ID.
  • Apple Ads attribution (iPhone only).Soon after you first open it, the iPhone app sends our server an Apple Ads attribution token with the install ID, your App Store country, and the app version. Our server exchanges the token with Apple, which tells us whether the install came from an Apple Ads campaign and, if so, which campaign, ad group, and keyword. We keep Apple’s answer with the install ID. The token itself is deleted once Apple answers, or once it expires after 24 hours. The Android app sends nothing like this.

The install ID is a random identifier the app creates the first time it needs one. It is not derived from your device, your Apple Account or Google Account, or anything else about you, and it is sent only to our server (and, on Android, to Google Play with a purchase). On iPhone it is kept in the device keychain, so it survives reinstalling the app. On Android it is included in the app’s backup.

What we don’t collect

  • No account, name, phone number, or social profile. The only email address we receive is one you type into the feedback form.
  • No advertising identifiers (Apple’s IDFA or Google’s Advertising ID) and no advertising SDKs.
  • No analytics of which screens you visit or what you do in the apps.
  • No copy of your trips or location history on our servers.

Location, including in the background

Location is optional. Without it, Tax Days works with the trips you enter yourself. If you allow it, the app checks your approximate location (roughly city level) to work out which jurisdiction you are in, including in the background while the app is closed, so your days are counted even when you don’t open it. The iPhone app asks for “Always” access and wakes when your location changes significantly. The Android app takes a reading each time you open it and, if you allow location access all the time, in the background as well. Readings stay on your device (and in iCloud sync or your Android backup, if those are on), apart from the place-name lookup described above. To turn location off:

  • iPhone:Settings → Privacy & Security → Location Services → Tax Days.
  • Android:Settings → Apps → Tax Days → Permissions → Location. Choose “Allow only while using the app” to stop background checks, or “Don’t allow” to stop location use entirely.

How we use your data

The data on your device powers the app’s features: counting days, computing residency thresholds, generating reports, and sending you alerts. The data that reaches us or the providers below is used to fix crashes and bugs, to answer your feedback, to count subscription revenue, and, on iPhone, to measure which Apple Ads campaigns lead to installs and subscriptions. We don’t use it for anything else, and we don’t sell it.

Third parties

  • Apple, handles App Store purchases and subscription notices, iCloud sync on iPhone (if you use iCloud), place-name lookups on iPhone, and Apple Ads attribution. Apple’s own privacy terms apply.
  • Google, handles Google Play purchases, Firebase Crashlytics crash reports from both apps, place-name lookups on most Android phones, and Android backup (if it is on). Google’s own privacy terms apply.
  • Cloudflare, hosts this website and the server the apps talk to, stores our subscription and attribution records, and keeps our server’s request logs, which include technical details such as your IP address.
  • RevenueHog, receives the feedback you send so we can read and answer it.
  • No data brokers, and no advertising SDKs in the apps.

How long we keep it

  • On your device, until you delete it or the app. Copies in iCloud or in your Android backup follow your Apple or Google settings.
  • Crash reports, 90 days, according to Google’s Firebase documentation, which says Crashlytics keeps crash data and its identifiers for that long.
  • Feedback, kept in RevenueHog so we can follow up, until you ask us to delete it.
  • Subscription and attribution records, kept on our server with no automatic expiry, because revenue from a subscription is measured over its whole life. You can ask us to delete them at any time.
  • Server request logs, up to 7 days, kept by Cloudflare and then deleted automatically.

How we protect it

Everything the apps send to us, to Firebase, and to the app stores travels over encrypted HTTPS connections. The subscription and attribution records on our server are tied to random IDs rather than to your name, and contain no trips or locations. Access to them is limited to Parra.

Your rights

Most of your data lives on your device, so you control it directly. You can:

  • Export your location history from Settings → Location Data, and, with Pro, a tax summary as a PDF or CSV from Settings → Tax Summary.
  • Delete individual trips in the app, or everything on the device by deleting the app. On Android you can also clear its data in Settings → Apps → Tax Days → Storage & cache → Clear storage.
  • Revoke location or notification access at any time: on iPhone in the Settings app, on Android in Settings → Apps → Tax Days, under Permissions and Notifications.
  • Turn off iCloud sync on iPhone by switching off iCloud for Tax Days in Settings → your Apple Account → iCloud. Deleting the app does not delete data already synced to iCloud: delete it in the app first, or remove Tax Days from your iCloud storage.
  • Turn off Android backup in your device’s backup settings.
  • Ask us for a copy of, or to delete, what we hold about you (feedback, subscription records, Apple Ads attribution records, and the install ID they carry) by emailing support@parra.io. Include the order number from your App Store or Google Play receipt, or the email address you used for feedback, so we can find the records. An order number leads us to your subscription records and, through their install ID, to your attribution record. The apps do not show the install ID, so if your iPhone install never bought a subscription, nothing links its attribution record to you and we cannot find it.

EU, UK, and California residents have additional rights under the GDPR, the UK GDPR, and the CCPA, including the rights to access, correct, delete, and port personal information. For data on your device, the app gives you those controls directly. For anything we hold, email us and we will respond within the timelines your local law requires.

This website

This marketing site is separate from the apps and uses its own tools:

  • Google Analytics 4 counts page views and shows how visitors found the site. Outside the EU, EEA, and UK it can set cookies. In the EU, EEA, and UK it runs with analytics and advertising cookies turned off.
  • The OpenAI measurement pixel lets us measure visits that come from ads we run in ChatGPT. It can set first-party cookies that store an ad-click reference and a random browser identifier.
  • Forms.If you sign up for the newsletter or send an enterprise enquiry, what you enter (such as your email address, name, organisation, and message) is delivered to our team’s Slack workspace.
  • Hosting. Cloudflare serves the site and processes the technical details every web request carries, such as your IP address.

You can block these cookies in your browser settings or install Google’s Google Analytics opt-out add-on. See Your Privacy Choices for every choice in one place.

Children

Tax Days is not directed at children under 13 and we do not knowingly collect data from them.

Changes to this policy

We may update this policy as the apps evolve. Material changes will be announced in-app and reflected in the “last updated” date above.

Contact

Questions, or a request about your data? Email support@parra.io. Tax Days is published by Parra (Parra LLC).