# FireSync Shift Calendar vs OnTrack CORE

The clearest difference is rating: FireSync Shift Calendar at 4.8 against OnTrack CORE's 4.2. FireSync Shift Calendar also leads on ratings volume (9.1K vs 5). OnTrack CORE's advantage is monetization model (free vs paid) and update cadence (every 3 weeks vs every 2 months). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

FireSync Shift Calendar holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: FireSync Shift Calendar has 9.1K ratings behind it against 5, so its average is the more settled of the two.

FireSync Shift Calendar ships an update every 2 months, OnTrack CORE every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | FireSync Shift Calendar | OnTrack CORE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (9.1K ratings)](https://appshunter.io/ios/app/firesync-shift-calendar/id811674374/reviews)** | [4.2 (5 ratings)](https://appshunter.io/ios/app/ontrack-core/id1232121244/reviews) |
| Number of ratings | **9.1K** | 5 |
| Positive reviews | 69.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Paid | **Free** |
| Size | 176 MB | 201 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [ForceReadiness.com](https://appshunter.io/developer/412513833) | [OnTrack Event Management, Inc](https://appshunter.io/developer/1232121243) |

## What reviewers say

### FireSync Shift Calendar

[App page](https://appshunter.io/ios/app/firesync-shift-calendar/id811674374)

This app is a comprehensive calendar designed for firefighters, offering robust shift tracking, event management, and cloud integration. It allows users to manage trades, overtime, and personal events, with features like CertTracker and Expenditure tracking. It also syncs with other calendars and devices for seamless organization.

**Highlights:** Firefighter shift schedule tracking, Event management (trades, overtime, personal), Cloud integration with FireSync Enterprise™, CertTracker and Expenditure tracking, Customizable shift editor, Year and month calendar views, Report generation and emailing

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Share capable
- 👍 Perfect setup
- 👍 User friendly and simple
- 👍 Easy to use
- 👍 Convenient

**What reviewers complain about**

- 🐛 Randomly deletes events
- 🔒 Trouble with calendar access
- 🐛 Holiday icon disappeared
- 🐛 Erased all info
- 🐛 Verification not working

**Reported bugs**

- Randomly deletes events
- Trouble with calendar access
- Holiday icon disappeared
- Erased all info
- Verification not working

**Requested features**

- Color customization for days
- Shift designation by number
- Custom FLSA start/end dates
- Customizable pay days
- Shift trade feature


### OnTrack CORE

[App page](https://appshunter.io/ios/app/ontrack-core/id1232121244)

This system tracks service standards, budgets, and metrics for large-scale transportation operations. It provides real-time data on vehicle location, service hours, and driver schedules to increase transparency and reduce costs.

**Highlights:** Track service standards and budgets, Real-time vehicle location, Manage driver and staff scheduling, Ridership and route frequency reports, Bill reconciliation data, Contractual compliance tracking

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FireSync Shift Calendar free?

FireSync Shift Calendar is free to download, with no in-app purchases.

### Is OnTrack CORE free?

OnTrack CORE is free to download, with no in-app purchases.

### Which has better reviews, FireSync Shift Calendar or OnTrack CORE?

FireSync Shift Calendar is rated higher. FireSync Shift Calendar averages 4.8 out of 5 from 9.1K ratings, while OnTrack CORE averages 4.2 from 5 ratings.

### Do FireSync Shift Calendar or OnTrack CORE have ads?

Neither FireSync Shift Calendar nor OnTrack CORE shows ads.

### Which is updated more often, FireSync Shift Calendar or OnTrack CORE?

FireSync Shift Calendar ships an update every 2 months, and OnTrack CORE every 3 weeks. Most recently, FireSync Shift Calendar was updated on October 24, 2026 and OnTrack CORE on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*