Tax Days vs. TrackingDays
TrackingDays has been in this category longer than almost anything else in it, and it shares Tax Days' core position: your data stays on your device with iCloud backup, not on a vendor's servers. Two things separate them. TrackingDays splits countries and US states across two different apps, TrackingDays and TrackingStates, and its location tracking is a paid add-on listed at $41.99/year. Tax Days does both in one app for $29.99/year across 200+ jurisdictions. Here is the head-to-head. (Prices below are the in-app purchase prices on the TrackingDays App Store listing as of August 2026, confirm the current figures before buying.)
Pricing at a glance
Privacy-first iPhone app. No accounts, no servers. Optional iCloud sync via Apple's encrypted CloudKit.
Long-running iPhone day counter from Lauco Trading Limited, counting days and nights worldwide with Schengen 90/180, rolling 365-day windows, UK night counting, and the US presence tests. US state residency lives in a separate companion app, TrackingStates. Data is kept locally with iCloud backup.
Feature comparison
| Feature | Tax Days | TrackingDays |
|---|---|---|
| Annual cost | $29.99/year, everything included | $41.99/year for location tracking ($3.99/month) |
| Apps you need to run | One app for countries and US states | TrackingDays for countries, TrackingStates for US states |
| Free tier | Yes (limited rules, no time limit) | App is free; automatic location tracking is the paid add-on |
| Tracking method | Significant-change monitoring (Pro) or manual entry | Automatic continuous location tracking, or manual entry |
| Data location | On your iPhone + optional iCloud, no accounts, no servers | Local, with iCloud backup, described as fully private |
| US states | All 50 with state-specific tests, in the same app | Via the separate TrackingStates app |
| Countries | 200+ countries, 80+ rules | Stated as over 60 countries |
| Days vs nights | Day counting with per-rule part-day handling | Counts both days and nights, including UK night counting |
| Federal Substantial Presence Test | Yes (3-year weighted) | Yes, plus the Physical Presence Test for expats |
| Schengen 90/180 | Yes | Yes, 90-day rolling rule |
| UK SRT | Yes | UK night counting for the Statutory Residence Test |
| Export | Audit-ready PDF with a clear day-count trail | Not published |
| Platform | iPhone (iOS 26+), Mac via Catalyst | iPhone; its site says Android is currently unavailable |
Which one is right for you?
Tax Days is best for…
- Anyone who wants US states and countries in a single record, not two apps.
- People who want automatic tracking included rather than priced separately.
- Anyone who needs specific US state statutory tests rather than a generic threshold.
- Users who want an audit-ready PDF export of the day count.
TrackingDays is best for…
- UK taxpayers who specifically want nights counted for the Statutory Residence Test.
- Anyone who values a product with a very long track record in this niche.
- People who only track countries and never need US state rules.
- Users who prefer paying monthly for tracking rather than annually for an app.
Bottom line: TrackingDays is a serious, long-lived app and it takes the same privacy position Tax Days does, so this is a genuine comparison rather than a mismatch. The practical questions are how many apps you want to run and what you want to pay: TrackingDays puts US states in a second app and prices automatic tracking at $41.99/year on its own, while Tax Days puts every jurisdiction in one app for $29.99/year. If UK night counting is the specific thing you need, TrackingDays has built its product around that distinction for a long time.
Frequently asked questions
What is the difference between TrackingDays and TrackingStates?
They are two separate apps from the same publisher. TrackingDays counts days and nights across countries, with Schengen, rolling 365-day windows, and the US presence tests. TrackingStates is the companion app for US state residence. If you need both country and US state tracking, you run both. Tax Days covers all 50 states and its international rules inside one app and one record.
How much does TrackingDays cost?
The TrackingDays App Store listing publishes its location tracking as an in-app purchase at $3.99 per month or $41.99 per year. The app itself is listed as free to download. Tax Days is $29.99 per year with automatic tracking included on Pro, plus a free tier with a limited rule set. Confirm the current prices on the App Store, since they change.
Which app is more private?
Both take the same position, and it is a good one: the record is kept locally on your iPhone with backup through your own iCloud account rather than on a vendor's servers. Tax Days adds the option to turn location off entirely and log every trip manually, so you can run it with no location permission at all. Neither app requires you to hand your travel history to a third party.
Does TrackingDays handle UK nights for the Statutory Residence Test?
Yes, and it is one of its distinguishing features: it counts nights as well as days, which is the unit the UK Statutory Residence Test cares about. Tax Days also runs the UK SRT. If night counting across many rules is the centre of your problem, TrackingDays has built its product around that distinction for years and is worth a look.
Which covers more jurisdictions?
Tax Days, on the published numbers. TrackingDays states coverage of over 60 countries, with US states handled in the separate TrackingStates app. Tax Days covers 200+ countries plus all 50 US states with their specific statutory tests in one app, along with the federal Substantial Presence Test, Schengen 90/180, and the UK SRT.
Is TrackingDays still maintained?
Yes. Its App Store listing shows recent version updates, so this is not an abandoned app. Its own site notes that the Android version is currently unavailable, so it is effectively an iPhone product today, as is Tax Days.
Ready to try Tax Days?
$29.99/year. No accounts. No tracking. Free tier with limited rules.