Comparison
Tax Days vs. Domicile365
Domicile365 has been a staple in the category for years, especially among accountants serving snowbirds. Tax Days takes the same problem and brings it to the iPhone with privacy as a first-class concern.
Pricing at a glance
Tax Days
$19.99 / year
Privacy-first iPhone app. No accounts, no servers. Optional iCloud sync via Apple's encrypted CloudKit.
Domicile365
$50–250 / year
Long-running residency-tracking service used by accountants serving snowbirds and cross-border workers, with background GPS, multi-platform access, and accountant-shareable accounts.
Feature comparison
| Feature | Tax Days | Domicile365 |
|---|---|---|
| Annual cost | $19.99/year | Varies by plan, $50–250/year |
| Free tier | Yes | Trial only |
| Tracking method | Manual trip entry | Background GPS |
| Data location | On your iPhone + optional iCloud | Domicile365's servers (account-based) |
| US states | All 50 with state-specific rules | All 50 |
| Schengen 90/180 | Yes | Limited |
| UK SRT | Yes | Limited |
| International rules | 30+ countries, 80+ rules | US-focused |
| Audit reports | Per-jurisdiction PDF export | Reports + CSV export |
| Platform | iPhone (iOS 26+), Mac via Catalyst | iOS, Android, web |
Which one is right for you?
Tax Days is best for…
- iPhone users who want privacy by design.
- International travelers tracking Schengen, SPT, UK SRT, etc.
- People who want to pay $20/year instead of $200.
- Anyone with no need for a vendor account or shareable login.
Domicile365 is best for…
- People who want background GPS automation.
- Multi-platform users (Android, web).
- Accountants who want shared client accounts.
- Pure-domestic US snowbirds without international rules.
Bottom line: Domicile365 fits accountants and multi-platform users; Tax Days fits iPhone users who travel internationally. The price gap is large — and so is the international rule coverage.
Ready to try Tax Days?
$19.99/year. No accounts. No tracking. Free tier with limited rules.