One83
Puerto Rico Act 60 Tracker
Only for iPhone
Free · In‑App Purchases
iPhone
Every day counts exactly once. One83 reads your flights, watches for island crossings, and keeps an audit ready record of your presence in Puerto Rico.
One83 counts the days you are physically present in Puerto Rico, the number your bona fide residency rests on.
EVERY DAY COUNTS ONCE Other trackers credit a travel day to two places at once. One83 keeps one record per calendar day. If any part of that day was spent in Puerto Rico, the whole day counts as a Puerto Rico day, which is the rule that actually applies. The day you fly out and the day you fly home both count, and no day is ever counted twice.
YOUR DAYS, FOUND FOR YOU Connect Google Calendar or the calendar already on your phone and One83 reads the flight events sitting in it, turning arrivals and departures into presence days without typing. Correct any day with a tap, and your correction always wins over anything the app worked out. With Premium it keeps syncing in the background. With Audit Defense, location records island crossings on its own, even when a flight never made it into a calendar.
FOUR OF THE FIVE PRESENCE TESTS The presence requirement can be met more than one way. One83 tracks the four that run on days: 183 days in Puerto Rico, no more than 90 days in the United States, more days in Puerto Rico than the United States, and 549 days across three years. It shows which you are passing and your margin in each. The fifth, no significant connection to the United States, is not a day count.
WHAT YOU SEE FIRST One number answers your question: days left off the island, days of presence so far, or days in the United States. A status line and a seven day strip show where you stand.
A CALENDAR THAT EXPLAINS ITSELF Browse the year as a grid or a list. Tap any day to see where its answer came from, a flight, a location crossing, your move in date, or your own edit, and change it in one tap or fix a stretch at once. Record arrival and departure times without changing the count.
PLAN BEFORE YOU BOOK See what a trip costs in island days before you book, counted with every trip you already have, and whether you still clear your target. Save it, block the dates in your calendar, or share the plan.
BUILT FOR AN AUDIT (PREMIUM) Export a PDF or CSV with the source of every day, plus the flights and location crossings behind them. Each report carries a reconciliation line proving the days sum to the year, and a digest that shows whether the record was edited.
STARTING PART WAY THROUGH THE YEAR Already living on the island? Set your move in date and One83 fills the days from then forward, without touching anything already recorded. Trips your calendar finds replace those days automatically.
NOTIFICATIONS THAT STAY QUIET An optional evening reminder asks only about days with nothing recorded, and you can answer it from the notification. If your days are being found for you, you never hear from it.
YOUR DATA STAYS ON YOUR PHONE No account and no sign up. Your record lives on your phone, not on a server of ours. No ads, no analytics, no tracking. Your calendar is read on your device and never uploaded, your location never leaves it, and crash reports never include your data. Back up your entire record to a file whenever you want, free, and restore it just as easily, so nothing you have recorded is ever locked away.
FREE AND PAID Free: the day counter, calendar sync, the tests, manual edits, the trip planner, and backups. Premium: automatic background sync, encrypted backup, PDF and CSV audit export, the year end CPA report, and the Home Screen widget. Audit Defense: everything in Premium, plus location crossings, the medical and disaster exception log, and the CPA share package. Both plans start with a 14 day free trial.
WHO IT IS FOR Act 60 decree holders, anyone working toward bona fide residency in Puerto Rico, and the accountants who ask them for their day counts.
One83 is a tracking tool. It does not provide tax or legal advice. Physical presence is one of three bona fide residency tests, and meeting it is not the whole picture. Talk to a qualified professional about your own Act 60 obligations.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Kallos Labs LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Kallos Labs LLC
- Size
- 63.1 MB
- Category
- Finance
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Audit Defense $299.99
- Audit Defense Founding $99.99
- Premium Yearly $79.99
- Premium Monthly $9.99
- Copyright
- © 2026 Kallos Labs LLC
