Residency & Tax Day Count Tracking Software

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Desktop Apps (Mac / Windows)

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App Key Features

• Download the Domicile365 Residency and Tax Day Count Tracking App at the Apple iTunes App Store. or Google Play Store. Available for iOS, macOS and Android.
• Track your days spent in various locations for tax, homestead, exemption, statutory residence and other compliance purposes. Track by Country, State, City, Possession, Territory and/or Province. New York City tracking is available.
• Set an unlimited number of alerts by Country, State, City, Possession, Territory or Province. Receive alerts by email and local notification on your phone as your reach various day thresholds. Check your alerts at any time.
• Location continuously recorded in real-time background presence logs using the highest level of accuracy supported by your phone. Location is determined using a combination of GPS, Bluetooth, Wi-Fi hotspots and cell tower locations and then recorded. The App's software location algorithms have been refined to minimize battery drain. Learn more about device location tracking in our how Domicile365 records location article and see our guides for Samsung Galaxy and Google Pixel background tracking optimization.
• Apple App Attest & Anti-Spoofing (Patent Pending): The latest iOS version incorporates Apple's App Attest security framework to solve a major vulnerability present in standard residency tracking apps. Standard background GPS coordinates can easily be spoofed using developer tools (like Mock Locations or Xcode simulations), jailbreak tools, or network proxies (like Charles Proxy or Fiddler) that rewrite HTTP payloads in transit. Apps that merely save coordinates directly into a standard database log are highly susceptible to reliability claims in an audit because the records can be easily modified or retroactively created. By contrast, Domicile365 uses a patent-pending cryptographic verification system using hardware-backed cryptographic keys generated inside the device's Secure Enclave to cryptographically sign and verify every location post against a server-issued challenge. This provides mathematical, tamper-proof proof to tax auditors that the location data was transmitted from your actual physical device.
• Google Play Integrity & Anti-Spoofing: The Android version of Domicile365 uses Google's Play Integrity API — the Android platform's equivalent to Apple's App Attest — to confirm that location posts originate from a genuine, unmodified copy of the app running on an uncompromised Android device. Each verified location record carries Google's device-attestation confirmation, helping protect against spoofed coordinates from mock-location tools, rooted devices, or tampered app installs.
• Signed, Verifiable PDF Reports: Generate a cryptographically signed PDF of your location records for any year directly from the website. Each record is automatically checked against your device's hardware security to confirm it wasn't tampered with or spoofed — the report clearly distinguishes verified records, benign gaps (like a reinstalled app), and flagged records that may indicate tampering (Patent Pending). The signed PDF also includes a QR code and Export ID that a tax authority, advisor, or employer can scan or look up to instantly confirm the document came from Domicile365 and hasn't been altered — an independent, tamper-evident record they can verify themselves. Advisors with linked client access can generate the same signed PDF for a client from the Advisor Dashboard.
  Most residency tracking apps fall into one of two camps: some store your location history only on your device or in your personal iCloud, with no server-side record at all, so there is nothing a third party can independently check against. Others store your data on their servers but only let you export a raw CSV file or an unsigned PDF summary — a document anyone, including you, could edit in a spreadsheet or PDF editor after the fact, with no way for a skeptical auditor to tell. Domicile365's signed export closes that gap: the document itself carries cryptographic proof of its own authenticity, so a tax authority doesn't have to trust your app, your advisor, or your word — they can verify it directly.
• Calendar feature available to view recorded locations on each day of each month of each year.
• Search by dates. Email or download detailed logs containing all recorded locations showing your location (Country, State/Possession, City and Province, Time Recorded, Latitude and Longitude).
• Use on device AI Foundation Model to search and analyze location data.
• Manually enter missing dates for time periods before you activated app for more complete analysis.
• Use the Advisor Portal to invite your CPA or financial planner to have "read only" access to your location data.
• Enterprise Desktop Apps (macOS & Windows): Prefer location tracking from your desktop or corporate workstation? Domicile365 offers passive, background desktop applications: our macOS Menu Bar App (notarized DMG installer in enterprise-updates with automatic Sparkle updates) and Windows System Tray App (available on the Microsoft Store). Small-enterprise users can access download packages and deployment instructions on our Enterprise App Downloads Page.
• Separate Calculators to check (a) U.S. residency day count using special 3 year averaging rule, (b) Puerto Rico presence test under 183 day one-year rule, 549-day 3 year rule, less than 90 days in the U.S. test, more days in Puerto Rico than U.S. test, etc.... (c) U.K. overnight day count tracking, and (d) Monaco overnight day count tracking and country comparison analysis (see below).
• UK Statutory Residence Test (SRT) — built for the post-non-dom-abolition landscape. Since the UK abolished its non-dom regime in April 2025, the SRT day count is the primary line of defence for anyone with UK ties. Domicile365 includes overnight midnight verification aligned to the UK's 6 April–5 April tax year, configurable alerts at the 16, 46, 91, 121, and 183-day SRT thresholds, and one-tap export formatted for your UK tax adviser. Learn more about UK SRT tracking or read about the 2025 non-dom abolition and what it means for your day count.
• Monaco Tax Residency Check — overnight and "main stay" comparison tracking. Monaco residency requires tracking nights spent rather than standard any-presence days. Domicile365 includes overnight presence audits for Monaco's 183-day baseline, alongside a patent-pending country comparison check ranking nights spent across all visited countries to verify Monaco as your primary country of stay. Learn more about Monaco residency rules or use our free public Monaco Main Stay Residency Calculator.
• Special day count analysis and counts for jurisdictions that only count presence overnight (e.g., U.K., Monaco) or consecutive 24 hour periods (e.g., Maryland, New Mexico, China) as days. Our proprietary midnight-crossing detection and overnight straddle algorithms (Patent Pending) are specifically built to track these complex rules (as opposed to the standard rule that presence during any part of a calendar day counts as a day). Learn more in our what counts as a day for tax residency article.
• Jurisdictions have become increasingly aggressive in asserting residency status. The burden of proof is generally on you to establish how many days you spent in and outside the jurisdiction. Use this app to help carry your burden of proof and evidence what your day count is. With states and cities increasing their tax rates to all time highs, the stakes have never been higher.
• Detailed day count listings provided by Country, State, City, Possession, Territory and Province. Download or email detailed logs listing each recorded location, with 95-100 daily recorded locations typically available.
• A Schengen or European Travel Information and Authorization System ("ETIAS") visa calculator is included. The Schengen visa calculator tracks your days spent in the Schengen area and calculates the number of days remaining in your 90 day Schengen visa period.
• Tax day count data securely stored in the cloud. Tax day count data will not be used or shared in any manner other than in connection with your use of the App and website. See our Privacy Policy.
• CSV Migration Wizard: Transitioning from another residency tracking provider? Use our bulk migration tool to import your historical location data from CSV files in seconds, ensuring a seamless switch to Domicile365.
• Enterprise Compliance & Multi-State Exposure Hub: Track tax day counts for employer-employee income tax withholding, corporate income tax nexus, international Permanent Establishment (PE) risk, and specialized municipal tax allocations (such as the NYC Unincorporated Business Tax and San Francisco Gross Receipts Tax). Domicile365 provides continuous presence monitoring and automated threshold alert hubs to manage enterprise exposures across distributed workforces. Read our State Withholding & Threshold Alerts Guide, explore our Corporate Tax Nexus & PE Guide, or view Enterprise Subscriptions.

Download the App from the Apple App Store and Google Play Store. Links are provided at the bottom of this page. Signup for a free 60 day trial either in the App or via our website registration.

Download the Enterprise User Guide (PDF), user guide (iOS), user guide (Android), or user guide (macOS) for more details.

Defend Your Residency Status

Don't rely on inadequate records. Use the Domicile365 App to create a defensible, GPS-based log of your location.
Sign up for a free 60-day trial and start tracking today.

Day Count Tracking Features

• Selectable thresholds & automated jurisdiction alert targets
• Automated statutory 183-day presence, 549-day 3-year, and overnight stay tracking
• Cryptographically signed, unalterable location logs & exportable CPA audit reports
• Multi-device synchronization across Mobile (iOS/Android) and Desktop (macOS/Windows)

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Enterprise User Guide iOS User Guide Android User Guide macOS User Guide