ResusSim — back to overview
Beta · what is ResusSim?

Get ResusSim running in your room

ResusSim is in free beta: create an account and accept the beta terms, and the downloads unlock here straight away. One computer in the room hosts the simulation; every tablet, phone and laptop just joins it.

One computer hosts. Everything else joins.

You only install ResusSim on the host — a Mac or Windows PC. The bedside iPads, student phones, a wall TV and any laptops connect to it over your room’s Wi-Fi with nothing to install.

Host computerMac or Windows PC — install here
iPad (bedside) Student phones Wall TV Chromebook Any laptop

Join the beta free

Create a beta account, accepting the beta terms (confidentiality/NDA, no reverse engineering). Your account unlocks the downloads here and signs you in inside the app.

iPad, Chromebook, phone or laptop nothing to install

These devices don’t host — they join the Mac or PC that does. Just open a browser.

  • ✓On the host, start a session — it shows a room code and a QR code.
  • ✓Scan the QR with the device’s camera, or type the room’s web address into Safari or Chrome.
  • ✓The device lands on the right screen — bedside monitor, EMR, consult phone or CPR tool — and stays in sync over your Wi-Fi.

Planning to use live call audio, a phone as the CPR/BVM sensor, or the in-room recorder? Those need one extra one-time step per device — the Secure mode manual walks through it for iPhone/iPad, Mac, Windows and Chromebook.

Chromebooks can’t be the host — they have no way to run the installer — but they make excellent joining screens. Keep the host on a Mac or Windows PC, and let Chromebooks, iPads and phones connect to it.

System requirements

  • ✓Host — Mac: macOS 11 Big Sur or newer · Apple Silicon (M1–M4) or Intel.
  • ✓Host — Windows: Windows 10 or 11, 64-bit.
  • ✓Joining devices: anything with a current browser — Safari or Chrome from roughly the last three years. iPads, iPhones, Android, Chromebooks, laptops, smart-TV browsers.
  • ✓Bedside monitor & ventilator displays: the live waveforms want recent silicon — iPads from ~2020 on (A14/M-series) render them cleanly; older iPads (2018 and earlier) show visibly rough traces. Older tablets still work fine as the EMR, pumps or phone.
  • ✓Network: any Wi-Fi the host and devices share — room Wi-Fi, a dedicated router, or a phone’s hotspot. Internet is only needed to download the app and for AI scenario generation, never mid-session.

Version history

What changed in each release.

v0.1.0-beta.2current13 October 2026
  • The Windows app starts. Beta.1 installed on Windows but stopped with an error before it opened.
  • Updates install themselves. From this version on, a new version downloads in the background and installs the next time you quit ResusSim. Earlier versions can’t do this, so they need one reinstall from this page.
  • Windows: starting ResusSim again after closing its window brings the control room back, and the window fits smaller and scaled laptop screens.
  • The ResusSim icon in the Mac menu bar and the Windows tray shows. It was blank before.
  • Consult-call audio: if the host had to start on a different network port, the setup check says so. A phone that can’t use its microphone explains why and how to fix it on iPhone, iPad, Mac and other devices, with links to the certificate and the Secure mode manual.
  • Labetalol and esmolol: a 20 mg labetalol push is the full dose, 10 mg gives a partial effect, and repeat doses add up. Esmolol now goes up to 300 mcg/kg/min.
Earlier versions
v0.1.0-beta.19 October 2026
  • The Mac app is signed and notarised by Apple, so it opens with the ordinary first-launch check and asks for the microphone properly.
  • Beta accounts: sign in inside the app with the account you made on this page. It keeps working offline once the computer has been online in the last 7 days. AI features have a daily allowance per account.
  • Whole cases that branch: a scenario carries the history, the chart and timed stages, and can take a different course depending on what the team does and how quickly. You can change what happens next while the case runs.
  • Goals tab: what the case is testing, shown live with deadlines counting down. The AI can draft the goals for you.
  • Physiology: infusions take time to work, drugs change the labs (bicarbonate, insulin), untreated hyperkalaemia can progress to arrest and calcium only buys time, CPR shows on the monitor, and ventilator mechanics respond to the lungs and the patient’s own effort. Patients can arrive with a pacemaker.
  • About 100 drugs and a full lab catalogue, plus care orders: oxygen devices and positioning change the patient, and lines, catheters, splints and C-spine are charted with a time.
  • ECG: a 12-lead editor, describe an ECG in words and the AI sets it up, named patterns including Osborn J waves, and 12-leads filed in the chart.
  • Imaging: a library of real films (never AI-drawn), a viewer that scrolls CT stacks, adjusts the window, zooms and inverts, and a radiology report the learner writes.
  • Consult phone: a separate conversation with each specialist.
  • Setup and devices: give each tablet its role at setup, choose US, UK or SI units, and monitor sound that works on iPhone and iPad. Older iPads are supported, and a browser that’s too old says so instead of showing a black screen.
  • Debrief and feedback: search and filter the event log, and report a problem from inside the app.
  • Restarting the host keeps the whole patient, including the fluids given and the case’s goals.
v0.1.0-alpha.119 July 2026
  • First preview build for Mac and Windows: the control room, bedside monitor with defibrillator and pacer, ventilator, infusion pumps, EMR, consult phone, ultrasound and AI-built cases. The Mac app wasn’t signed by Apple yet.

Something not working?

The user guide covers choosing the Wi-Fi, pairing tablets, running a case and troubleshooting. If the app won’t install or open, or phones and tablets can’t connect to it, email resussim@resussummit.com. Say whether you’re on a Mac or a Windows PC and what you see. A screenshot helps.