Your crew reports on WhatsApp. Mustr turns it into the RIDDOR and CHAS paperwork.

Flat monthly price per company from £39, not per user or per site. 14-day free trial, no card needed.

Get started Coming soon: a free “Is it RIDDOR-reportable?” checker on WhatsApp

Why Mustr

  • No app to install

    Your crew already use WhatsApp. They message Mustr like they message anyone else.

  • UK law built in

    RIDDOR, CDM, COSHH and Work at Height are built in. Reporting deadlines are tracked from the first message, with the F2508 and F10 ready to check.

  • CHAS/SSIP evidence pack in one click

    Export the safety evidence your clients ask for, straight from the records you have already logged. On the Crew and Enterprise plans.

How it works

  1. Step 1

    Message

    Someone on site sends a WhatsApp message saying what happened, in plain English.

  2. Step 2

    Mustr classifies

    Mustr checks it against RIDDOR 2013 and records whether it looks reportable and when it is due. It flags COSHH and Work at Height points to check. If something is unclear, it asks on WhatsApp.

  3. Step 3

    Report ready

    The paperwork is drafted for you to check. You review it and submit.

Pricing

One flat price per company. Not per user, not per site. 14-day trial, no card needed. Crew limits are fair use and never stop anyone reporting an incident.

Individual

£39 / month

For sole traders and small firms getting their paperwork in order.

  • Up to 10 crew on WhatsApp
  • WhatsApp incident and near-miss reporting
  • RIDDOR checks and F2508 drafts
  • COSHH and Work at Height checks
  • Toolbox talks and document sign-offs
  • Compliance dashboard
  • One dashboard login, for the owner

Crew

£79 / month

Everything in Individual plus the CHAS/SSIP evidence pack export.

  • Everything in Individual
  • Up to 30 crew on WhatsApp
  • Dashboard logins for site managers
  • CHAS/SSIP evidence pack export

Enterprise

£149 / month

Everything in Crew plus a set-up call, help loading your documents and priority support.

  • Everything in Crew
  • Up to 75 crew on WhatsApp
  • Set-up call and help loading your documents
  • Priority support

Get started

Questions

What does Mustr cover?
Incident and near-miss reporting under RIDDOR 2013, COSHH and Work at Height checks on every report, CDM 2015 records and F10 details, toolbox talks, RAMS and policy sign-offs on WhatsApp, accreditation renewal reminders, and the CHAS/SSIP evidence pack.
How does Mustr decide if something is reportable?
Mustr uses AI (Anthropic's Claude) to read each report against RIDDOR 2013 and CDM 2015, and flags anything that touches COSHH or the Work at Height Regulations with the points to check. If it is not sure, it asks follow-up questions on WhatsApp. It can still get things wrong, so you check every draft before anything goes to the HSE.
Does Mustr submit to HSE for me?
No. Mustr drafts the report and tells you when it is due, but you check it and submit it to HSE yourself.
Is my data safe?
Each company only ever sees its own records: the database enforces this for every account, and we never share your records with other customers. To run the service we use a small number of processors for hosting, WhatsApp messaging (Twilio) and AI classification (Anthropic).
Do I need a card to try it?
No. The 14-day trial needs no card and includes everything in Crew, for up to 30 crew. Pick a plan on Billing whenever you are ready.
What happens if my trial or subscription ends?
The dashboard asks you to pick a plan, but Mustr keeps accepting incident reports on WhatsApp, so no safety record is lost.