MAJOR UPDATE
Tax by US state
All 50 states ranked by what they add on top of federal tax, at your income. Your states appear from your photo days.
Country Days Tracker: Flags
Statutory Residence Test SRT
Only for iPhone
Free · In-App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
How many days have you spent in each country this year? Your photos already know, and you confirm every trip in two taps. No GPS. No account. No tracking.
How many days have you spent in each country this year? Your photos already know. Country Days Tracker rebuilds your travel history in about a minute — read on your phone, never uploaded — and you confirm every trip in two taps. No GPS. No account. No tracking.
Then it keeps watch: the 183-day rule and per-country thresholds, counted the way each tax authority counts them, with a clear safe / close / over answer — and a warning before you cross any line.
SEE WHAT YOU'D SAVE
• Estimated tax across the places you actually spend your year — ranked cheapest-first
• Tap any place for the full picture: total tax at your income, with the federal and regional split
• Anchored to your real days, not a fantasy relocation
• Set your next-year goal and let Flags count to it every time the app opens
ONE STATUS, ONE GLANCE
• Every jurisdiction you watch, ranked by risk
• Clear verdicts: Resident · Not resident · Approaching · Over · Review
• Your primary residence anchored at the top, regimes (like NHR) and all
YOUR DAYS, WITHOUT BEING TRACKED
• Reads the date and coarse region your photos already store — using offline maps, on device
• No location permission, ever. No background tracking.
• Missing a stay? The app spots the gap and suggests where you were — you confirm, or add it by hand
IT'S NOT ONLY HOW LONG YOU STAY
• Flag where your home, family, or work is — for most countries any of those can make you resident regardless of days
• The UK's Statutory Residence Test uses those ties to lower your day limit (simplified)
• US citizens are reminded that citizenship-based taxation follows them anywhere
NOTHING SLIPS BY
• Spending too long somewhere you don't track? Flags suggests it — and starts watching automatically once you're near the line
• Step back through this year and the last five: final status for every place that mattered, plus the exact dates of each stay
EXPORTS, WHEN IT MATTERS
• Evidence pack: every recorded day in one country, with the evidence behind it — photo-confirmed, manual, or inferred. PDF + CSV.
• A one-page briefing to start the conversation with your tax advisor
BUILT FOR HOW RESIDENCY ACTUALLY WORKS
• All ~239 countries plus US states, Canadian provinces, and Swiss cantons
• Each jurisdiction keeps its own tax year — the UK's 6 April, India's 1 April, Australia's 1 July, calendar year by default
• Plain-English rule text for major destinations
• Home-screen widget and an optional, quiet weekly check-in
PRIVATE BY CONSTRUCTION
Residency and the days you spent abroad are sensitive. So we built the app that can't see them: no account, no sync, no analytics SDK, no ad network. Everything runs on your iPhone, offline. Delete the app and it's gone.
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Country Days Tracker: Flags is an early-warning tool to stop you tipping over a threshold by accident, and its tax estimates are indicative — for planning conversations, not advice. It deliberately keeps complex rules simple. Confirm your position with a qualified tax professional before acting on it.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Events
Ratings & Reviews
- This app’s overall rating was recently reset.
A short note from the maker now appears after your first day count, asking for a rating. It shows at most twice and never while you're doing something. Nothing else about how the app works has changed.
The developer, ZEROCREW AI LTD, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- ZEROCREW AI LTD
- Size
- 17.8 MB
- Category
- Finance
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Standard Yearly £49.00
- Yearly Access £49.00
- Lifetime Access £99.00
- Copyright
- © ZeroCrew AI Ltd
