Day31 vs Days Monitor
The newest app in the category, and the loudest comparison blogger in it — measured against the most private one.
The short version
Days Monitor is a newer iPhone app wrapped in a genuinely useful content site: free calculators for Schengen, the US, the UK, and Canada, visa guides for 90+ countries, and comparison posts that quote competitors' own listings with dates. Its site also claims an on-device privacy model. Day31's edge is depth and maturity: years of past travel rebuilt from photo metadata, Canadian provinces and Yonkers alongside countries and US states, 33 languages, and an architecture with no account and full airplane-mode tracking. Use their free calculators gladly — we publish our own too — then pick the app on the record it builds.
Feature by feature
| Day31 | Days Monitor | |
|---|---|---|
| Tracking method | Automatic, on-device; no account or sign-up | iPhone app with automatic day counting, per its site |
| History rebuild | Rebuilds years of past travel from photo metadata in seconds | Not advertised; record starts at install |
| Privacy model | No account; data never leaves the device; optional backup to your own iCloud; works in airplane mode | Site states "your data, your device"; architecture details beyond that are not published |
| Jurisdictions | Countries, US states, Canadian provinces, New York City, Yonkers, Schengen | Positions itself around Schengen, US, UK, and Canada rules, with 90+ country visa guides |
| Free web tools | Yes — Schengen, 183-day, and US substantial-presence calculators, plus visa and tax-residency guides | Yes — a broad calculator library with no signup, a genuine strength |
| Platforms | iPhone (iOS-native) | iPhone app, per its site |
| Pricing model | Free download, optional Day31 Pro subscription (see App Store for current pricing) | Free web tools; app pricing on its App Store listing |
Days Monitor details from daysmonitor.com, checked August 2026.
Where Days Monitor is stronger
- The free calculator library. Schengen, US, UK, and Canada tools on the web with no signup — the widest free-tool offering in the category, and a real public service.
- Comparison transparency. Their head-to-head posts quote each competitor's own store listing, linked and dated. It is the most defensible pattern in comparison marketing — we adopted it for these pages.
- Content breadth. Visa guides for 90+ countries make the site useful even if you never install the app.
Where Day31 is different
- The past, recovered. Day31's photo-metadata rebuild reconstructs years of travel in seconds — the difference between starting a record and already having one.
- Proven privacy architecture. No account at all and full functionality in airplane mode — privacy as a design constraint, not a tagline.
- Jurisdiction depth. All US states, Canadian provinces, New York City and Yonkers, and Schengen — counted simultaneously, with alerts before thresholds.
- 33 languages and an iOS-native interface refined for the iPhone.
Frequently asked questions
Is Days Monitor free?
Its web calculators are free with no signup, and its site emphasizes that. The iPhone app's pricing is set on its App Store listing — as with Day31, the store is the source of truth, so compare there rather than on either marketing site.
Why does Days Monitor publish so many comparison pages?
It is their acquisition strategy, and a fairly transparent one: each post quotes the competitor's own store listing with a date and a link. We borrowed that pattern for this page — our claims about them come from daysmonitor.com, checked August 2026. Comparison blogs are a starting point, not a verdict; install both and judge.
Do I need an app at all, or are web calculators enough?
For a one-off check — "if I fly on Friday, do I overstay Schengen?" — a free calculator (theirs or ours) is enough. Apps earn their place when the record itself matters: months of automatic counting, alerts before thresholds, and a history you can hand to an accountant. That is the job Day31 is built for.
Can Day31 recover travel from before I installed it?
Yes — the photo-metadata rebuild reconstructs years of past travel from your photo library in seconds. Days Monitor does not advertise an equivalent; like most trackers, its record starts at install.
Depth beats novelty
Download Day31 free for iPhone and let your photos rebuild the travel record you forgot to keep.