# FireSync Shift Calendar vs Trades 3631

The clearest difference is monetization model: Trades 3631 at free against FireSync Shift Calendar's paid. Trades 3631 also leads on review sentiment (100% vs 70%) and update cadence (every 2 weeks vs every 2 months). FireSync Shift Calendar's advantage is ratings volume (9.1K vs 2). 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.

Trades 3631 holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: FireSync Shift Calendar has 9.1K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 70% of FireSync Shift Calendar's written reviews are positive against 100% of Trades 3631's.

FireSync Shift Calendar ships an update every 2 months, Trades 3631 every 2 weeks. The most recent releases landed on October 21, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | FireSync Shift Calendar | Trades 3631 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (9.1K ratings)](https://appshunter.io/ios/app/firesync-shift-calendar/id811674374/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/trades-3631/id6795606143/reviews)** |
| Number of ratings | **9.1K** | 2 |
| Positive reviews | 69.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Paid | **Free** |
| Size | 176 MB | 12 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [ForceReadiness.com](https://appshunter.io/developer/412513833) | [Andrew Howell](https://appshunter.io/developer/6795606145) |

## 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


### Trades 3631

[App page](https://appshunter.io/ios/app/trades-3631/id6795606143)

This platform simplifies shift exchanges for firefighters. Post shifts, find coverage, negotiate terms, and manage trades securely. Manual account verification ensures authorized use.

**Highlights:** Post shifts, Find available coverage, Negotiate payback dates, Real-time notifications, Manage confirmed trades, Secure platform

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

**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 Trades 3631 free?

Trades 3631 is free to download, with no in-app purchases.

### Which has better reviews, FireSync Shift Calendar or Trades 3631?

Trades 3631 is rated higher. FireSync Shift Calendar averages 4.8 out of 5 from 9.1K ratings, while Trades 3631 averages 5.0 from 2 ratings.

### Do FireSync Shift Calendar or Trades 3631 have ads?

Neither FireSync Shift Calendar nor Trades 3631 shows ads.

### Which is updated more often, FireSync Shift Calendar or Trades 3631?

FireSync Shift Calendar ships an update every 2 months, and Trades 3631 every 2 weeks. Most recently, FireSync Shift Calendar was updated on October 21, 2026 and Trades 3631 on September 28, 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.*