# FireSync Shift Calendar vs First Due Mobile

The clearest difference is review sentiment: FireSync Shift Calendar at 69% against First Due Mobile's 17%. FireSync Shift Calendar also leads on rating (4.8 vs 2.9) and ratings volume (9.1K vs 813). First Due Mobile's advantage is monetization model (free vs paid) and update cadence (fortnightly 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 2.9. That said, the two scores are not equally well evidenced: FireSync Shift Calendar has 9.1K ratings behind it against 813, so its average is the more settled of the two. Written reviews point the same way: 69% of FireSync Shift Calendar's written reviews are positive against 17% of First Due Mobile's.

FireSync Shift Calendar ships an update every 2 months, First Due Mobile fortnightly. Both last shipped on September 24, 2026.

## The numbers

| Metric | FireSync Shift Calendar | First Due Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (9.1K ratings)](https://appshunter.io/ios/app/firesync-shift-calendar/id811674374/reviews)** | [2.9 (813 ratings)](https://appshunter.io/ios/app/first-due-mobile/id1300758445/reviews) |
| Number of ratings | **9.1K** | 813 |
| Positive reviews | **69.2% of reviews** | 16.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Paid | **Free** |
| Size | 176 MB | 223 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [ForceReadiness.com](https://appshunter.io/developer/412513833) | [Locality Media, Inc.](https://appshunter.io/developer/1355085433) |

## 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


### First Due Mobile

[App page](https://appshunter.io/ios/app/first-due-mobile/id1300758445)

Receive real-time incident notifications and navigate directly to emergencies with optimized routing. Access critical building data, pre-plans, and team communication tools for enhanced situational awareness and faster response.

**Highlights:** Incident tracking and notification, Emergency response routing, Building data integration, Pre-incident planning, Team chat communication, Live unit tracking

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Accurate incident information
- 📊 Valuable pre-planning and response data
- 🗺️ Helpful mapping and navigation features
- 💡 Comprehensive all-in-one solution

**What reviewers complain about**

- 🐛 Frequent crashes and stability issues
- 📱 Clunky and unintuitive mobile interface
- ⏱️ Slow incident notifications and app loading
- 🔇 Lack of customizable alert tones and settings
- 🤯 Overwhelming number of features, poor usability

**Reported bugs**

- Addresses not accurately displayed
- Inability to log out or switch between departments
- Inconsistent behavior across iOS and Android
- Unreliable push notifications and alerts

**Requested features**

- Dark mode option
- Improved scheduling and shift management
- Apple Watch integration for alerts
- Offline functionality and caching
- Streamlined user interface and navigation


## Frequently asked questions

### Is FireSync Shift Calendar free?

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

### Is First Due Mobile free?

First Due Mobile is free to download, with no in-app purchases.

### Which has better reviews, FireSync Shift Calendar or First Due Mobile?

FireSync Shift Calendar is rated higher. FireSync Shift Calendar averages 4.8 out of 5 from 9.1K ratings, while First Due Mobile averages 2.9 from 813 ratings.

### Do FireSync Shift Calendar or First Due Mobile have ads?

Neither FireSync Shift Calendar nor First Due Mobile shows ads.

### Which is updated more often, FireSync Shift Calendar or First Due Mobile?

FireSync Shift Calendar ships an update every 2 months, and First Due Mobile fortnightly. Most recently, FireSync Shift Calendar was updated on September 24, 2026 and First Due Mobile on September 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.*