Tax Days vs. Monaeo
Monaeo has been the category leader for high-net-worth residency tracking for over a decade. Tax Days takes the same problem and brings it to the iPhone with privacy as a first-class concern. Here's how they compare honestly. (Pricing below is Monaeo's published rate as of mid-2026, confirm the current number on their site before buying.)
Pricing at a glance
Privacy-first iPhone app. No accounts, no servers. Optional iCloud sync via Apple's encrypted CloudKit.
Long-running enterprise residency tracker with background GPS, audit-defense services, and white-glove support, built for ultra-mobile UHNW individuals and family offices.
Feature comparison
| Feature | Tax Days | Monaeo |
|---|---|---|
| Annual cost (individual) | $19.99/year | $999/year ($99/mo) |
| Free tier | Yes (limited rules) | No |
| Tracking method | Automatic background tracking (Pro) or manual entry | Background GPS only (continuous tracking) |
| Data location | On your iPhone (SwiftData) + optional iCloud (CloudKit) | Monaeo's servers |
| US states | All 50 with state-specific abode rules | All 50 |
| Schengen 90/180 | Yes (rolling window) | Yes |
| UK SRT | Yes (ties + days) | Yes |
| International rules | 200+ countries, 80+ rules total | Hundreds of rules |
| Audit-defense services | Audit-ready PDF export | Included in higher tiers |
| Platform | iPhone (iOS 26+), Mac via Catalyst | iOS, Android, web |
Which one is right for you?
Tax Days is best for…
- Snowbirds, digital nomads, expats, remote workers, athletes.
- Anyone with sub-$10M income who wants beautiful, accurate, private day-count tracking.
- iPhone users who want zero data on a vendor's server.
- People who'd rather pay $20/year than $1,200/year.
Monaeo is best for…
- Ultra-mobile UHNW individuals with multi-jurisdiction tax exposure.
- Single-family offices managing tax for principals.
- Anyone who needs continuous, audit-grade location logging rather than trip-level records.
- Anyone who wants a vendor relationship with audit-defense services.
Bottom line: If you have multi-million-dollar exposure across many jurisdictions and want a high-touch service relationship, Monaeo is a credible choice. For 99% of cross-border residents, Tax Days at $19.99/year is the right answer.
Frequently asked questions
Is Tax Days cheaper than Monaeo?
Yes, by a wide margin. Tax Days is $19.99/year. Monaeo's individual plan is $99/month or $999/year, roughly 50x the cost.
Why is Monaeo so much more expensive than other trackers?
Monaeo targets ultra-high-net-worth individuals and family offices with white-glove audit-defense support, not just day counting. That service layer, not the underlying tracking technology, is what the price mostly pays for.
Does Monaeo cover international rules like Schengen or the UK SRT?
Yes, Monaeo tracks Schengen and UK SRT alongside hundreds of jurisdiction-specific rules, built for clients with complex multi-country exposure. Tax Days covers the same core rules (Schengen, UK SRT, 80+ rules across many countries) at a fraction of the price, without the enterprise support layer.
Does Monaeo use background GPS?
Yes, Monaeo runs continuous background GPS tracking to build audit-grade evidence. Tax Days can track automatically too on Pro, using significant-change monitoring rather than continuous GPS, and all data stays on your iPhone. Manual entry remains available if you would rather not grant location access at all.
Who should actually use Monaeo instead of Tax Days?
Ultra-mobile individuals with multi-million-dollar tax exposure across many jurisdictions, or single-family offices managing tax for multiple principals, where a dedicated audit-defense service justifies the enterprise price.
Is Tax Days audit-ready like Monaeo?
Tax Days exports a contemporaneous, jurisdiction-by-jurisdiction PDF log, the same kind of evidence auditors look for. It doesn't include Monaeo's white-glove audit-defense service, just the underlying records.
Ready to try Tax Days?
$19.99/year. No accounts. No tracking. Free tier with limited rules.