Idus IS vs Rotation
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Idus IS
Read full descriptionHide 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
Rotation
Read full descriptionHide 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
Verdict
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
Both are free to download. Rotation sells 2 one-off in-app purchases. Idus IS asks for nothing beyond the download.
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.
| Parameter | Idus IS | Rotation |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 4 days โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 13.0 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 136 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | IDUS AB | DANIEL MATTIAS FOGELL |
In-app purchases
Idus IS
No in-app purchases
Rotation
- 7-day TrialFree
- Rotation full version$14.99









