HALO: EM
Offline emergency procedures
Free · Designed for iPad. Not verified for macOS.
HALO: EM is a bedside reference for rare, time-critical emergencies — the procedures you perform rarely and cannot afford to get wrong. It works fully offline.
AROUND 150 PROCEDURE CARDS
• Airway
• Resuscitation
• Obstetric emergencies
• Access and decompression
• Core emergency department procedures
• Toxicology
• Critical care
• Pediatric and neonatal emergencies
Each card is step-by-step, written to be read while you are doing the procedure, not an hour before it.
DECISION ALGORITHMS
Around 35 guided algorithms that ask one question at a time and take you to the decision, instead of handing you a flowchart to decode under pressure.
IMMOBILIZATION REFERENCE
Casting and splinting guidance for injuries across five body regions.
BUILT FOR THE BEDSIDE
• Resuscitation mode — large type, with a timer
• Weight-based dose calculator that flags dose ceilings
• Search that tolerates typos and abbreviations
• Local notes on any card, so your department's protocol lives with the card
• Dark mode and adjustable text size
FULLY OFFLINE, NO DATA COLLECTED
HALO: EM makes no network requests and collects no data. It works in a resus bay with no signal, on a retrieval, or anywhere else the network does not reach.
WHO IT IS FOR
Qualified healthcare professionals and trainees: emergency physicians, residents, rural and remote generalists, paramedics, emergency nurses and critical care clinicians.
HALO: EM is a reference aid. It is not a substitute for clinical judgment, local protocols or specialist advice. Verify all doses against your institutional guidance before administration.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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User interface improvements
The developer, Arjan Dhoot, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Arjan Dhoot
- Size
- 8.9 MB
- Category
- Medical
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
16+
- 16+
- Frequent
Medical Treatment information
- Copyright
- © 2026 Preceptor. All rights reserved.