Which App Is Best for Residency Day-Count Tracking? A Detailed Comparison (2026)

"Which app is best for residency day-count tracking?" has no single answer, because the apps target different jobs: some are US-state specialists, one is enterprise, and a couple try to cover the whole world including the Schengen 90/180 rule. This is a detailed, side-by-side comparison of the main options. Every feature claim is a direct quotation from that app's own listing, linked and dated (checked 4 June 2026), and each section links to a full head-to-head.

Accurate as of 24 August 2026. Every statement about another product on this page comes from that company's own public materials (their website, App Store or Google Play listing) on that date. Where a company does not publish something, we say it is not stated in their materials rather than assuming it is absent. We do not publish App Store ratings in comparisons: rating counts differ so widely between products that side-by-side scores mislead more than they inform. Prices and features change, so check the linked sources before relying on any figure.

The options at a glance

Reflects each app's own published materials and App Store pages as of 4 June 2026; "Not listed" means the feature is not stated in those materials. See per-app sections and Sources.

TaxBird

"Stop worrying about counting days for tax residency. TaxBird automatically tracks where you spend your time throughout the year." (TaxBird, App Store, accessed 4 June 2026.) Covers US states, Canadian provinces and NYC; no Schengen in its listing. Full head-to-head: TaxBird vs Days Monitor.

TaxDay

"With TaxDay, you'll be able to easily monitor your travel with GPS against every US state residency tax code." (TaxDay, App Store, accessed 4 June 2026.) Uniquely lists "Receipt management" for records. Full head-to-head: TaxDay vs Days Monitor.

Domicile365

"Available for Apple iOS, Apple macOS, Android, and our new Windows Tray App." (Domicile365, accessed 4 June 2026.) The only option here with Android and Windows support. Full head-to-head: Domicile365 vs Days Monitor.

Monaeo

"Location Intelligence for Modern Workforce Compliance." (Monaeo, accessed 4 June 2026.) Built for organisations; also tracks Schengen. Full head-to-head: Monaeo vs Days Monitor.

Flamingo

"Flamingo Compliance flies with you and makes sure you comply with international, state, and city tax and visa requirements." (Flamingo, App Store, accessed 4 June 2026.) Adds a visa index "synced in real-time with IATA database." Full head-to-head: Flamingo vs Days Monitor.

Days Monitor

"Days Monitor. The Most Complete Global Residency and Travel Day Tracker." (Days Monitor, App Store, accessed 4 June 2026.) Covers US states, Canadian provinces, Schengen 90/180 and custom rules for any country, with "Instant PDF and CSV Reports" and data kept on-device. Free to download, with an in-app subscription.

So which is best?

• US states only: TaxBird or TaxDay (TaxDay if you want receipt attachment).
• Android or Windows user: Domicile365.
• An employer: Monaeo.
• International, visa lookups, proven app: Flamingo.
• A single global tracker for an individual, free to start: Days Monitor.

The "best" app is the one whose job matches yours. Whichever you choose, the value is the same: an automatic, GPS-based, exportable day log that you can rely on at tax time or a border.

More comparisons: iReside vs Days Monitor and TrackingStates vs Days Monitor.

Free calculators

Start with our free Schengen 90/180 calculator or the US Substantial Presence Test calculator, no account required.

Corrections

Every competitor claim here is checked against that company's own published materials and date-stamped. If you represent a product named on this page and believe anything is inaccurate or out of date, contact us and we will correct it promptly.

Sources

• TaxBird, App Store (accessed 4 June 2026)
• TaxDay, App Store (accessed 4 June 2026)
• Domicile365 website (accessed 4 June 2026)
• Monaeo website (accessed 4 June 2026)
• Flamingo Compliance, App Store (accessed 4 June 2026)
• Days Monitor, App Store (accessed 4 June 2026)