Daysium
Solves tax and day counting
Free · Designed for iPad. Not verified for macOS.
"Introducing Daysium – your day-counting companion. Daysium elegantly resolves the risks and complexities of day counting and record-keeping.
Key Daysium Features:
-Ditch the Spreadsheet: No more manual day counting hassles.
-Location Tracking Made Easy: Let your phone's GPS automate location logging.
-Photographic Proof: Upload geo-tagged photos as evidence of your presence.
-Navigate Tax Rules: Understand the tax implications across multiple jurisdictions.
-Strategic Planning: Maximize entitlements and minimize accidental overstays.
Discover the Ultimate Day Counting Solution - The Daysium Platform!
Say goodbye to the old ways of managing tax residence and travel compliance.
With Daysium you get a holistic solution that simplifies rule establishment, planning, tracking, and most importantly, evidencing and reporting on travel.
It’s not just an app, it’s a revolution in tax compliance management.
JOIN OUR COMMUNITY
https://www.linkedin.com/company/daysium/
https://www.facebook.com/daysium"
more Daysium 1.22 update improves the reliability of cross-border check calculations, ensuring more consistent results, especially when journeys involve late arrivals, timezone changes, or same-day trips.
What’s new:
- More reliable Cross Border Checks. Improved accuracy and consistency in how these checks are calculated. As part of these improvements, previous check indicators have been reset to ensure future calculations are based on strengthened logic.
- Better handling of travel edge cases. More dependable results around overnight travel, timezone crossings, and same-day flights.
- Stability improvements behind the scenes. Foundational updates to reduce inconsistencies and improve predictability.
Update now for a smoother, more dependable experience.
1.22 25 Feb
Daysium 1.21 strengthens how the app handles complex travel scenarios, ensuring your tax residency day count stays accurate.
What’s improved:
- Smarter Cross-Border Checks. A redesigned confirmation flow helps you verify midnight crossings clearly.
- Clearer Split Year Tracking. UK Split Year scenarios now behave correctly, with cleaner timelines and more accurate thresholds.
- Correct Rolling-Basis Calculations. UAE and Monaco day counts now follow the required rolling 12-month rules.
- Greater Clarity Around Edge Cases. Improved visibility when days fall close to midnight, so nothing is left open to interpretation.
Update now to keep your records precise, defensible, and ready for scrutiny.
1.21 28 Jan
Daysium 1.20 delivers two major upgrades to improve long-term accuracy, historical insight, and compliance — plus a round of stability fixes. Here's the update:
- Multi-Year Previous Tax Years. Explore several completed tax years by jurisdiction. Review day counts and events. Add additional evidence to past years to strengthen your records.
- Improved Time Zone Logic. More accurate day and time boundaries, ensuring events are calculated using each jurisdiction's legal time zone.
- Bug Fixes & Improvements. General performance and stability enhancements.
Update now for a more precise and reliable experience.
1.20 08/12/2025
The latest Daysium update includes bug fixes and two new 183-day rulesets to keep your tax residency journey steady and stress-free.
Here are the latest improvements:
- Spain & Italy 183-Day Rulesets added.
- Assumed Location fixed to allow error-free updating and saving of any global location.
- Split-Year Rule Integrity patch applied to prevent unintended application.
- Pre-Daysium data correction to ensure these calculations start in the correct tax year.
- Timeline Location update for assumed locations.
Update now to enjoy these improvements.
1.19 24/11/2025
Daysium 1.18 is here!
Here’s what’s new:
- Improved email validation for a smoother experience.
Update now to enjoy even better performance and reliability.
1.18 11/11/2025
The latest Daysium update has landed, with version 1.17 focusing on strengthening accuracy, security, and reliability.
Here’s what’s new:
- A refreshed ‘Global Presence’ card and icon.
- Smarter error handling for more reliable location creation.
- Updates to database consistency for improved stability.
- Streamlined access for memberships and trials to keep your account secure.
Update now to enjoy smoother performance and to stay compliant.
1.17 17/10/2025
Your residency day counting just got smarter. Version 1.16 ensures accuracy during cross-border travel at midnight, adds full support for UK split-year rules, and resolves a few performance issues.
Here’s what’s new:
- Midnight Location Confirmation: A pop-up helps resolve midnight cross-border location changes, so your day counts stay accurate.
- Renamed “Tax Rules” to “Rules”: A pure terminology update to reflect broader coverage, including Monaco residence and Schengen visa counts.
- UK Split-Year Rule Support: Day and workday counters for the UK split-year rule now fully supported.
- Location Auto-Update Fix: Ensures your location always logs correctly.
- Filtered Timeline View: One unique location per hour for a more precise timeline.
- Profile Photo Fix: Photos now upload correctly across versions.
- Update now to enjoy sharper accuracy and a more seamless timeline experience.
1.16 05/10/2025
The latest Daysium update is here. Version 1.15 strengthens your security and ensures a smoother experience across all platforms. What’s new:
- Unified Email & Password Validation: Stronger, consistent rules for a safer, seamless login and onboarding.
- New Email Template Design: A refreshed look for our system emails to match our brand and make the design feel more responsive.
- Mandatory T&C & Privacy Policy Acceptance: A clear consent step during onboarding, with direct links for full transparency.
- Stable Push Notification Queue: Balanced delivery, ensuring you never miss a timely update or get the same one twice.
Update today to enjoy a more secure, reliable, and elegant Daysium experience.
1.15 20/09/2025
The latest Daysium update is here! Version 1.14 introduces a smoother onboarding process, a cleaner sign-in experience, and a new in-app guide so you can make the most of your mobile companion from day one. Here’s what’s new:
- Streamlined Onboarding: Receive your exclusive invitation via a dedicated web portal and email link for quick, hassle-free app access.
- Simplified Sign-In: We’ve temporarily removed third-party logins (Microsoft, Google, Apple).
- Helpful In-App Guide: Step-by-step tips to help you get started and navigate the app with ease.
Update now to enjoy a faster, more intuitive Daysium experience.
1.14 18/08/2025
Daysium 1.13 is here and it’s smarter than ever. Our latest update adds clearer labels to your day counts and more precision to your locations. We’ve also added new jurisdictions to support your cross-border compliance.
What’s new:
- “EXIT UK” Label - Tags UK days where you left before midnight, and not counted towards your UK residency total.
- Update Location via Google Maps - Edit visit events using nearby places within 500 metres. Fully integrated with Google Maps for precise, compliant records.
- U.S. Ruleset Support - Automatically monitor day counts under the 30-day and 120-day Safe Rules of the U.S. Substantial Presence Test.
- Reports Update - Generate advisor-ready reports. The share button is now integrated directly into the Reports menu for a cleaner, faster experience.
- Fixes & Improvements - Resolved “Deemed” day labelling issues and improved push notification reliability.
Update now to make your day counting even more precise, flexible, and advisor-ready.
1.13 24/07/2025
Exciting updates have landed with Daysium 1.12. to help make tax residency compliance more precise and personalised. Here's what's new:
- Elegant Referrals, Built In - Invite trusted friends via WhatsApp, email or AirDrop.
- New Tax Rulesets Added - We've added rules for Switzerland, India, and Portugal. France's 3- and 6-month visa rules are also now available.
- More Personal Timeline & Navigation - Reorder your Home screen cards and navigate better with new Google Maps previews for location entries.
- Smarter UK Day Counts - Enhanced logic for midnight presence checks in line with HMRC guidelines.
- Bug Fixes - We've resolved an issue with transit day deselection.
Update now, and don't forget to refer your friends for a smarter compliance journey.
1.12 12/06/2025
The latest Daysium update is here. Here’s what’s new on 1.11:
- Day Count Fixes: Resolved an issue with transit days affecting overall day counts.
- Previous Tax Years Bug: Fixed errors that led to data from previous tax years to not show.
- Ruleset Improvements: The maximum day limit now displays correctly for all Rulesets.
- Schengen Rule Fixes: Schengen rule data now correctly appears in the ‘Explore’ view, and it no longer shows in ‘Previous Tax Years’ where it doesn’t apply.
- Schengen Rule Updates: Andorra, Monaco, San Marino, and Vatican City are now included in the Schengen country list, with updated Ruleset documentation, rule descriptions, and ‘Manage Rules’ copy.
- Ruleset Sync Update: Rulesets managed in the online portal now correctly reflect in the app.
- Login Process Fixes: We’ve resolved an issue where error messages sometimes appeared incorrectly during login.
- New Country Flags: Added flags for Hong Kong, Vietnam, and Singapore.
Update now to strengthen your tax residency compliance.
1.11 26/03/2025
Our latest release is a small update, focused on bug fixes and minor improvements to keep your day counting experience smooth.
- Implemented the ‘Summary Reports’ for more rules – The reporting option is now available when counting minimum days spent in a jurisdiction.
- Updated Monaco Rule – Minor adjustment to the Ruleset name for clarity.
- Fixed a Login Screen Bug – First-time users will now go straight to the ‘Home’ screen instead of the ‘Manage Rules’ screen.
Update now for a smoother experience!
1.10 21/02/2025
Daysium is taking day counting and record keeping to the next level with our latest release. Version 1.9 brings new features designed to refine your experience across different tax jurisdictions. Here are the new features:
- Presence Rule & Counter: Automatically counts your physical presence in any jurisdiction, throughout the day, every day of the year. Easily toggle this feature on or off to suit your needs.
- Minimum Counted Days: A new feature to help count days towards tax residency. Shows the days spent and the minimum required for tax residency in a specific tax jurisdiction.
- Reports Generation: Dive into your data with just a tap to generate summary reports of your day counts.
- Added Notifications: Receive notifications to help keep your day counts up-to-date and evidenced.
- UI and Bug Fixes: Fixed date inaccuracies in the Explore view, and overflowing text on the Evidence view.
Update now to take advantage of the new features and ensure your day counting is as precise as ever.
1.9 17/02/2025
Daysium’s latest update (Version 1.8) is here. We've focused on fine-tuning your experience with bug fixes and smoother navigation. Here's what's new:
- Fixed incorrect time display for some locations, ensuring time reflects daylight savings.
- Removed unnecessary status pop-ups for errors, keeping things cleaner.
- Fixed a bug where the + button occasionally went missing, leaving only an orange circle.
- Resolved a bug causing some evidence images to upload twice.
- Fixed missing country flags on the Daysium Timeline for better clarity.
- Added an indicator to show if you’ve exceeded your day count limit.
- Reversed the Timeline—now, your latest location appears at the top for easier review.
Update now to enjoy an even smoother tax residency compliance experience.
1.8 16/01/2025
The latest Daysium update has arrived. Version 1.7 adds a new feature to simplify day counting and travel planning, along with some UI updates and bug fixes to enhance your experience. Here’s what’s new:
New Feature to View Previous Tax Years:
-Access this feature in the ‘Home’ menu, between ‘Manage Rules’ and ‘Location Permissions.’
-Review Rulesets for previous tax years, including counted days and your compliance limits, along with all logged events.
-While day counts for past years are set, you can still add supporting evidence to your Timeline for more robust records.
UI Updates for Better Timeline Experience:
-Standardised date formatting across the Timeline for easier viewing.
-Adjusted the position of Notes and Photos icons for consistent formatting.
Bug Fixes:
-Resolved an issue where day counts weren’t displaying or logging correctly.
Update your app now to enjoy these features and fixes.
1.7 23/12/2024
Improved Timeline & Transit Days:
-New update location feature to find the exact location on your timeline.
-Updated Self-Declared days and UK workday functionality.
-Manually deselect ‘Transit Days’ or let them auto-update when marked as ‘Work Day’.
-Update Yellow ‘General Locations’ to accurate Green ‘Saved Locations’ for a clearer timeline.
-See the day of the week in your Timeline for improved planning.
UI Enhancements & Bug Fixes:
-Improved day count indicator when approaching and exceeding limits.
-Optimised UI for iPhone Mini, fixing formatting and number display issues.
-Resolved duplicate day entries under certain rules and timeline inconsistencies.
-Added clear warnings for missing location permissions and self-declared day deletions.
Update now for the latest features and fixes.
1.6 13/12/2024
In this release, we’ve improved the design of the app throughout, squashed some bugs and added a few new features:
> Contact support and access help articles with Daysi AI Messenger.
> Improved Explore view, more to follow on this in the next release.
> Updated Calendar on timeline which was a bit annoying, so we fixed it.
> Simplified timeline location terminology
> Enabled register and sign in with Google, Apple and Microsoft accounts
1.5 22/10/2024
- "Assumed" location is tracked when no data is available
- "Assumed" locations can be confirmed and evidenced
- Small updates to text in App
- Sufficient Ties rules now available
1.4 12/06/2024
- Add support for Icons next to visits
- Add support for new Rule Card types
- Improve handling of Transit days
1.3 21/05/2024
Bug fixes and improvements
New Explore view breaks down your day counts in detail
1.2 20/04/2024
Bug fixes and performance improvements
1.1 04/04/2024
Daysium 1.22 update improves the reliability of cross-border check calculations, ensuring more consistent results, especially when journeys involve late arrivals, timezone changes, or same-day trips.
What’s new:
- More reliable Cross Border Checks. Improved accuracy and consistency in how these checks are calculated. As part of these improvements, previous check indicators have been reset to ensure future calculations are based on strengthened logic.
- Better handling of travel edge cases. More dependable results around overnight travel, timezone crossings, and same-day flights.
- Stability improvements behind the scenes. Foundational updates to reduce inconsistencies and improve predictability.
Update now for a smoother, more dependable experience.
more Version 1.22 25 Feb
Data Used to Track You The following data may be used to track you across apps and websites owned by other companies:
Data Linked to You The following data may be collected and linked to your identity:
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