Roll call and evacuation

Musterd features

Who is on site, and are they safe?

Protect your workforce and the public with accurate, real-time roll calls, evacuations and sweeps. Explore the features below, and when you are ready we will give you a free, no-obligation online demo.

Book a Musterd demoDownload the Musterd brochure(PDF, 5.2 MB)

12
key features: 3 m
location precision, with what3words: 24/7
live on iOS and Android

Musterd in pictures

01 / 07

The app
Who is safe, and where the rest are
The live list and the site map, side by side, during an evacuation.
01
Real-time data
On site, off site, missing
Counts that change as badges are scanned and people are marked safe.
02
In the product
The people list
Everyone on site, their last reader and the time, filtered by building, team or role.
03
Multi-site
Every site, one command view
Muster point teams per site, and the whole estate on a map.
04
In the product
Zones on the map
Cleared zones in green, unsafe zones flagged, and the sweep in progress.
05
Devices
Works in the dark, on any device
High-contrast mode, what3words locations and rugged handhelds at the muster point.
06
In the field
In the marshals’ hands
The same roll call on every device, kept in sync in real time.
07

Built for real emergencies

12 features, 3 chapters

Live data, any number of sites, and devices that keep working in the dark. Every feature is included, and each chapter has its own page.

Live information during an evacuation

Real-Time Data

Modern evacuation management depends on live information. Musterd’s real-time data engine shows, at every moment, who is on site, who is off site and who is missing.

Who is on site
Who is off site
Who is missing

Learn more about Real-Time Data

From a single site to a global enterprise

Flexible, Multi-Site Scalability

Built to scale from a single site to a global enterprise: run evacuations across sites, give each muster point its own team, and keep oversight of everything on a map.

Multi-site evacuation
Different muster point teams
Map-based oversight

Learn more about Flexible, Multi-Site Scalability

Designed for real-world emergencies

Device-Ready Technology and What3words

Musterd’s technology is designed for real-world emergencies. It uses what3words location technology, and works reliably on smartphones, tablets and specialist devices.

Smartphones
Tablets
Specialist devices

Learn more about Device-Ready Technology and What3words

Every key feature

Cloud-based, real-time data display on all modern iOS and Android devices
Instantly shows who is UNSAFE, with their last known location
Visualises UNSAFE zones on interactive site maps
Designed to be simple to use with minimal training
Fully scalable across large, complex, multi-building or multi-site environments
Allows safety teams to text unsafe individuals to confirm status and location
Tracks the real-time location of Fire Marshals and responders
Highlights any disabled personnel needing additional support
Keeps Incident Managers and H&S Directors informed remotely, in real time
Operates reliably in poor visibility (darkness, bad weather, etc.)
Supports post-event reporting to prove the efficiency and legal compliance of drills and emergency procedures
Helps organisations demonstrate preparedness with Martyn’s Law through real-time accountability, documented procedures, and clear audit trails

Benefits and features

Access control-based risk and evacuation management

Musterd is our advanced, access control-based roll call and risk management solution, purpose-built to support complex evacuations, high-occupancy sites, and multi-building or multi-site organisations.

Designed to go far beyond traditional roll call tools, Musterd helps organisations protect their people, manage risk in real time, and demonstrate full compliance with UK health and safety legislation, including obligations under the Health and Safety at Work Act 1974.

During any emergency, from fires and evacuations to security incidents or system failures, Musterd uses real-time access control data to answer the most critical question: who is on site, and are they safe?

Whether it is a routine drill or a real emergency, Musterd helps organisations reduce confusion, speed up response times, and maintain a clear, accountable record of their evacuation process.

Martyn’s Law

In line with the Terrorism (Protection of Premises) Act 2025, known as Martyn’s Law, Musterd supports organisations in strengthening their preparedness and response. Its real-time tracking, accountability features and detailed reporting help duty holders demonstrate that effective public protection procedures are in place: an important step towards the new legal requirements for venues and events to plan, train and act in the event of a major incident.

Integrates seamlessly with

Access control systems for real-time personnel tracking
RotaOne our cloud-based time and attendance system
HR and visitor management systems or other personnel databases

Why Musterd matters

From paper lists to a real-time, risk-aware evacuation

In the UK, employers are legally required to provide safe working environments, ensure swift evacuations and maintain accurate headcounts during emergencies. Musterd provides the digital tools to manage these responsibilities effectively, helping you move from paper-based systems to a real-time, risk-aware evacuation process.

Minimise human error
Respond with clarity during chaos
Strengthen your health and safety culture
Demonstrate preparedness under Martyn’s Law
And most importantly, keep your people safe

What does Musterd look like?

The Musterd roll call and sweep system has a safe, simple user interface. Its intuitive design helps fire marshals and key personnel manage roll calls and zone sweeping operations throughout your sites and buildings.

Two phones running Musterd: the live people list and the site map

Need a simpler roll call solution?

Compare our roll call solutions

For companies and organisations with a small team, or that just need a simple roll call system, RotaOne comes with an integrated roll call report. See the RotaOne roll call report.

Capability	RotaOne Roll Call Report	Musterd Roll Call
Roll call snapshot
Real-time roll call
Track disabled personnel
Sweep a site’s critical zones
Manage roll calls for multiple sites
Keep safety managers informed anywhere
Track fire marshal safety
Easy to use in the dark or rain
Report on fire drill frequency and performance
Prices from	Included with RotaOneSee the report	Ask us for a quoteAsk us for a quote

Integrations

Musterd can be integrated with a range of systems that hold employee data. That removes the need to enter staff into the roll call system by hand, and keeps it up to date as people join and leave.

What customers say

Musterd, in their own words

All testimonials

“The Musterd Roll Call app has been a great success and we have tested it a number of times.”
Stephen HamiltonMeiyume
Read the full testimonial

Customer success stories

Time and attendance case studies

How hotels, care providers and one of the UK’s largest arts centres run their workforce with Thinking Software.

View all case studies

Entertainment & Leisure
Southbank Centre
Southbank Centre is a world-famous, multi-venue arts centre in London, with a dynamic year-round festivals programme and an inclusive ethos.
Hosts
200+
Shifts a year
30,000
Reduced admin workload and enhanced accuracy of staff timekeeping and attendance data
Health and Social Care
Somerset Care
The Somerset Care Group are one of the major care providers in Southern England and one of the largest not-for-profit care companies in the UK.
Employees
4,500
Staff at each site
70-80
Payroll processing reduced from several hours to less than 2 hours weekly
Hospitality & Events
Malmaison & Hotel du Vin
Whether it’s for their prime locations, their unique style or their memorable individuality, the Malmaison & Hotel du Vin brands are well-known.
Staff across both brands
3,000
Hotels
29
“Huge increase in payroll efficiency, from breaks right through to managing start and end times”