One Calendar vs RigCheck Fleet
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
One Calendar
Consolidate all your calendars from various providers into a single, easy-to-read view. Manage appointments, events, and birthdays efficiently across all your devices. Offers a clean interface for seamless organization.
- Integrates multiple calendar providers
- Unified calendar view
- Manage appointments and events
- Syncs across devices
- Customizable colors and themes
- Easy to use interface
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The most popular app to view all your calendars like Google, Live, Outlook, iCloud, Exchange, Office365, Yahoo, Nextcloud, Synology, GMX, Mailbox.org, ownCloud and more. OneCalendar integrates all your calendars into an easy-to-read overview. View and manage all your appointments, events and birthdays. OneCalendar is available on all platforms.
RigCheck Fleet
Streamline heavy equipment inspections with this app, creating detailed, photo-backed records to prevent failures and reduce downtime. It helps manage your fleet, track machines, and empower operators to quickly report issues.
- Fleet inspection management
- Photo documentation of issues
- Machine tracking
- Operator issue flagging
- Customizable inspection types
- Crew management
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RigCheck is the fastest way to inspect heavy equipment, prevent costly failures, and keep your fleet running. Built for owners, foremen, and operators, RigCheck turns daily checks into clean, photo-backed records you can trust. WHY TEAMS USE RIGCHECK - Prevent expensive equipment failures - Reduce downtime and missed jobs - Keep inspection records consistent and shareable - Empower operators to flag issues in seconds WHAT YOU CAN DO - Track machines across your fleet - Run quick-status updates or full inspections - Attach photos to document issues - Invite operators with a simple code - Manage crew groups and assignments PLANS FOR EVERY OPERATION - Entry: Smaller fleets getting started - Core: Growing teams managing multiple machines - Pro: Serious operators with full team workflows - Enterprise: Company-managed billing with tailored limits Whether you run one rig or one hundred, RigCheck helps you protect your equipment, your team, and your bottom line. Powered by Hoyer Construction. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ratings volume: One Calendar at 21K against RigCheck Fleet's 2. One Calendar also leads on device support (4 vs 1) and iOS requirement (15.0 vs 17.0). RigCheck Fleet's advantage is review sentiment (100% vs 81%) and rating (5.0 vs 4.8). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. One Calendar sells 1 one-off in-app purchase and RigCheck Fleet sells 1 in-app purchase, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.
RigCheck Fleet holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: One Calendar has 21K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 81% of One Calendar's written reviews are positive against 100% of RigCheck Fleet's.
One Calendar ships an update every 3 weeks, RigCheck Fleet every 9 days. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.
| Parameter | One Calendar | RigCheck Fleet |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (21K ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 80.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 21K — better | 2 |
| Update frequency | Every 3 weeks | Every 9 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 91 MB | 10 MB |
| Age rating | 12+ | 4+ |
| Developer | Code Spark | JOHN HOWARD RESLER HOYER |
Customer experience
One Calendar
RigCheck Fleet
Bugs and requests
One Calendar
Reported bugs
5 issues- Sync errors
- Unresponsive buttons
- Incorrect time zone display
- Duplicate events
- Inability to delete future occurrences of recurring events
Requested features
6 requests- Multiple reminders for events
- Ability to edit recurring events
- Option to change event calendar after creation
- Printing support
- More customization options
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- Widgets for better visibility
RigCheck Fleet
Not enough reviews yet to summarise bugs or requests.
In-app purchases
One Calendar
- OneCalendar premium$5.99
RigCheck Fleet
- Owner Pro$9.991 Month
Questions
Is One Calendar free?
Is RigCheck Fleet free?
Which has better reviews, One Calendar or RigCheck Fleet?
Do One Calendar or RigCheck Fleet have ads?
Which is updated more often, One Calendar or RigCheck Fleet?
Other comparisons
