Comparison

Idus IS vs Rotation

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Idus IS

Features
Read full description

Idus is a mobile application allowing you to manage most of your Idus tasks in the field. Idus is designed to be easy to use and quick to learn. Features * Create fault reports, work orders and registrations. * Register round jobs, input values for round jobs * Register signal values * Modify all aspects of existing fault reports, work orders and registrations. * Add photos to fault reports, work orders and registrations. * Register time spent and spare parts used on work orders and registrations. * Tag your maintenance units with GPS-position. * View object's position on a map. * Ability to work offline. ** Requires an existing Idus IS installation v8.3 or higher

About

Rotation

Features
Read full description

Plan life between work rotations. Rotation brings your schedule, checklists, certificates and hour log together for work at sea or offshore. CHECKLISTS FOR YOUR NEXT TRIP Create packing lists and tasks for outbound and return trips, or standalone lists. Recurring lists follow your rotation. Complete tasks, view history and choose reminders for what needs to be done. YOUR SCHEDULE, SHARED WITH FAMILY Set a start date, work days and days off, with optional travel days before and after work. Connect an existing shared iCloud calendar to show two years ahead. Each period away becomes one event from departure through return, with work and travel dates in the description and a title you choose. Without travel days, the event covers the work period. The calendar updates when you save changes and extends when you open the app. Create and share your family calendar in Apple Calendar first. Connect one device; Apple syncs the calendar with your family. WIDGET AND OVERVIEW See your next outbound trip, joining date, signing-off date or return trip on your Home Screen. Customize compact overview cards for your schedule, checklists, certificates and hour log. SCAN AND RENEW CERTIFICATES Take a photo or choose an image or PDF. On-device text recognition suggests course names and dates. Review and correct before saving. Original attachments remain available offline. Renew certificates while keeping previous versions in history. Choose active certificates, optional expiry dates and reminders. HOUR GOALS AND TRAVEL Record hours and notes for personal training or qualification goals. The log is personal documentation, not an official certificate. Under More, keep manually entered flight and hotel bookings together. YOUR DATA STAYS WITH YOU Works offline on iPhone and iPad without a separate account. Optional backups are saved to your own private iCloud Drive folder and restored by importing a file. This is not automatic app-data sync between devices. No ads or analytics. TRY IT FOR 14 DAYS Try all features free for 14 days. Continued use then requires an optional one-time purchase. Your regional price is shown in the app. No subscription or automatic charge. Saved data remains available for export without purchase. Available in Swedish, English and Norwegian Bokmal. Support and privacy: http://nordsnitt.se/rotation/

Screenshots

Idus IS1 screens
Rotation4 screens

Verdict

The call

The clearest difference is in-app purchases: Idus IS at none against Rotation's 2. Idus IS also leads on iOS requirement (13.0 vs 17.0). Rotation's advantage is update cadence (every 4 days vs every 3 months). On price, ads and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Rotation sells 2 one-off in-app purchases. Idus IS asks for nothing beyond the download.

UpkeepUpdate frequency

Idus IS ships an update every 3 months, Rotation every 4 days. The most recent releases landed on October 29, 2026 and November 6, 2026 respectively.

Scorecard3 real differences ยท 3 level
Idus IS versus Rotation: the parameters behind the verdict, then further details
ParameterIdus ISRotation
PriceFreeFree
Update frequencyEvery 3 monthsEvery 4 days โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS13.0 โ€” better17.0
Further details โ€” not scored
Size136 MB2 MB
Age rating4+4+
DeveloperIDUS ABDANIEL MATTIAS FOGELL

In-app purchases

None

Idus IS

No in-app purchases

2 purchases

Rotation

One-time2
  • 7-day TrialFree
  • Rotation full version$14.99

Questions

Is Idus IS free?
Idus IS is free to download, with no in-app purchases.
Is Rotation free?
Rotation is free to download, with in-app purchases available.
Do Idus IS or Rotation have ads?
Neither Idus IS nor Rotation shows ads.
Which is updated more often, Idus IS or Rotation?
Idus IS ships an update every 3 months, and Rotation every 4 days. Most recently, Idus IS was updated on October 29, 2026 and Rotation on November 6, 2026.

Other comparisons