Comparison

FireSync Shift Calendar vs ResponderOS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

FireSync Shift Calendar

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
Read full description

FireSync is not merely a Firefighter Shift Calendar, it's also a full-featured calendar app with powerful cloud-enabled features just for firefighters. Whether or not you want to keep track of your trades, overtimes, or just your kid's soccer practices, FireSync can do it all. It also includes many powerful features such as CertTracker, Expenditures, and is fully integrated with FireSync Enterprise™ and TheHouse™ cloud services. Before you buy another shift calendar app ask yourself: 1. Do you have to pay an annual subscription for the calendar? Not with us! We support firefighters by letting you keep more of your hard-earned money. Is there a better way? 2. Is it also a full-featured calendar app? FireSync isn’t just a firefighter shift calendar, it’s also a full-featured calendar app that fully integrates with your phone's calendars. FireSync events are saved to your calendar and can be seen on other phone's using the same calendar account (e.g. phones used by family members). FireSync is more than a good firefighter calendar. It’s a good calendar app period! 3. Will you find yourself staring at the app for 15 minutes just figuring out how to use it? FireSync has a sleek modern design that is intuitive to use. 4. Does it include powerful cloud-enabled features? If your fire department uses FireSync Enterprise™ or TheHouse™ you can view all of the additional data and applets shared by your department or station from within FireSync. !!! SHIFT SUPPORT !!! FireSync supports any 24-hour shift schedule that repeats on a predictable cycle. FIRESYNC COMES PRELOADED WITH THE SHIFT CYCLES FOR OVER 1,400 FIRE DEPARTMENTS! If you do not see your fire department no problem. Our intuitive shift editor allows you to easily create your shift schedule. You can also share it with us so that others in your firehouse or department can quickly be up and running. Although FireSync does not fully support 12-hour shifts, we have countless users using FireSync to display their 12-hour shifts. If you want to display YOUR SHIFT (not all shifts) you can create 12-hour shifts. Kelly and Debit Days. Does your fire department use Kelly and Debit days? No problem. FireSync allows you to show both Kelly and Debit days. You can define them by rule or by specifying specific dates. FLSA: FireSync allows users to add FLSA periods to their calendar. Other Features: 1. Ability to add and track ordinary events, trades, overtime, comp time, benefit days, incidents and training. Since FireSync is also a full-featured cal you can also see these events on other calendars and other devices sharing the same calendar account (e.g. spouse). FireSync is your all-in-one calendar app. 2. Sleek reports that give you the info you need at a mere glance. View your shift trades, overtimes, comp time, benefits accrued or used, training and fire incidents with ease. You can also email your reports. 3. The ability to view your calendar in a year view, month view, month-list view, or day view. With FireSync you aren't just looking at your shift cycle. You can see all of your fire and non-fire events. 4. CertTracker to keep track of your training certificates. 5. Expenditure tracking. FireSync Shift Calendar is the shift calendar firefighters deserve. Get the word out to your brothers and sisters in your firehouse and IAFF local. *FireSync is the exclusive property of ForceReadiness.com. It solely developed FireSync and is responsible for its functionality. Firefighters First Credit Union has agreed to sponsor the app in order to provide it to all firefighters at no cost.

About

ResponderOS

This suite provides essential tools for fire and EMS professionals, offering immediate access to operational references, clinical support, incident management, personnel documentation, and task tracking. It's designed for use in the field, during shifts, and for daily operations, empowering responders with critical information without departmental delays.

Highlights
  • Field Operations Reference (SceneKit)
  • Clinical Tools for EMS (MedKit)
  • Incident Management (CommandKit Lite)
  • Personnel Documentation (PersonnelKit)
  • Task Management (TaskKit)
  • Includes multiple operational kits
Features
Read full description

ResponderOS puts the tools that actually matter on scene, mid-shift, and at the end of a long day in your hands without waiting for a department rollout. The individual plan includes five kits. No agency account. No procurement cycle. SceneKit: Field Operations Reference The job aids responders reach for on actual calls. PumpOps and fire flow calculators, foam concentrations, water supply math, ladder and ventilation references, a full rope rigging suite, trench and confined space tools, collapse operations, LZ setup, and hazmat/ERG lookup. ICS forms when you need them. Built around the calls that require you to do the math right, fast, without hunting through a binder on the rig. MedKit: Clinical Tools for the Field Provider Active clinical support for EMS and fire-based providers. Drug and drip calculators, overdose and toxidrome decision support, cardiac arrest management, airway and RSI reference, pediatric and OB tools, a full medication lookup, and clinical pearls for the differential that doesn't fit neatly. Built for the medic managing a critical patient, or the firefighter who needs the right dose before medical control picks up. CommandKit Lite: Incident Management for the Single-Unit Officer Lightweight IC tools for the officer running a working incident without a full command post. Unit tracking, sector assignments, and a patient log built around the rhythm of small-to-medium incidents, like the structure fire where you're command and entry at the same time, or the multi-patient MVC before mutual aid arrives. Not a replacement for ICS at a major incident. The tool for every other call. PersonnelKit: The Leadership Paper Trail The documentation that should exist for every evaluation, counseling session, and mentoring touchpoint, and almost never does. Structured prompts for the things that matter, a timeline of every interaction, and probationary tracking that fires reminders before the deadline, not on it. The kind of record that protects you and the person you're developing. TaskKit: One List for Everything You're Accountable For Personal tasks, supervisor-assigned work, delegation to direct reports, subtasks, and acknowledgement tracking. Built around the shift, not the workweek. What needs to happen before you go home, what you delegated and whether it was acknowledged, and what carries over. Task management designed for the 24-hour rhythm. More kits, including WellnessKit, LeadershipKit, and PlannerKit, are being adapted for individual use and will be included in your existing subscription at no extra cost when they ship. Built between calls by an active EMS Captain. Used every shift. Terms of Use (EULA) can be found at: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy can be found at: https://responderos.app/privacy.html

Screenshots

FireSync Shift Calendar4 screens
ResponderOS4 screens

Verdict

The call

The clearest difference is in-app purchases: FireSync Shift Calendar at none against ResponderOS's 1. FireSync Shift Calendar also leads on ratings volume (9.1K vs 1). ResponderOS's advantage is update cadence (fortnightly vs every 2 months) and rating (5.0 vs 4.8). On price, ads, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ResponderOS sells 1 in-app purchase, starting at $4.99 per month. FireSync Shift Calendar asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ResponderOS 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 1, so its average is the more settled of the two.

UpkeepUpdate frequency

FireSync Shift Calendar ships an update every 2 months, ResponderOS fortnightly. The most recent releases landed on October 13, 2026 and October 15, 2026 respectively.

Scorecard5 real differences · 5 level
FireSync Shift Calendar versus ResponderOS: the parameters behind the verdict, then further details
ParameterFireSync Shift CalendarResponderOS
PriceFreeFree
Rating4.8 (9.1K ratings)5.0 (1 ratings) — better
Positive reviews69.2% of reviews—
Number of ratings9.1K — better1
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size176 MB165 MB
Age rating17+17+
DeveloperForceReadiness.comJason Jones

Customer experience

FireSync Shift Calendar

All ratings9,095 ratings
Positive95.7%
Neutral2.7%
Negative1.6%
Written reviews91 reviews
Positive69.2%
Neutral8.8%
Negative22.0%

ResponderOS

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

FireSync Shift Calendar

Reported bugs

11 issues
  • Randomly deletes events
  • Trouble with calendar access
  • Holiday icon disappeared
  • Erased all info
  • Verification not working
Show 6 more
  • No longer syncs
  • Schedule won't publish
  • Crashes on iOS 13.2 update
  • App keeps crashing
  • Bug with editing events
  • Major bug with category/location fields

Requested features

11 requests
  • Color customization for days
  • Shift designation by number
  • Custom FLSA start/end dates
  • Customizable pay days
  • Shift trade feature
Show 6 more
  • Debit day scheduling
  • Ability to share calendar with others
  • Dark mode
  • Shift color customization
  • Shift swap/back-to-back trade option
  • Ability to see which shift you're on

ResponderOS

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

FireSync Shift Calendar

No in-app purchases

1 purchases

ResponderOS

Subscriptions1
  • ResponderOS Individual1 Month trial$4.991 Month

Questions

Is FireSync Shift Calendar free?
FireSync Shift Calendar is free to download, with no in-app purchases.
Is ResponderOS free?
ResponderOS is free to download, with in-app purchases available.
Which has better reviews, FireSync Shift Calendar or ResponderOS?
ResponderOS is rated higher. FireSync Shift Calendar averages 4.8 out of 5 from 9.1K ratings, while ResponderOS averages 5.0 from 1 ratings.
Do FireSync Shift Calendar or ResponderOS have ads?
Neither FireSync Shift Calendar nor ResponderOS shows ads.
Which is updated more often, FireSync Shift Calendar or ResponderOS?
FireSync Shift Calendar ships an update every 2 months, and ResponderOS fortnightly. Most recently, FireSync Shift Calendar was updated on October 13, 2026 and ResponderOS on October 15, 2026.

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