Field Guide Wilderness Med. 4E vs Dyop Controller
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Field Guide Wilderness Med. 4E
This medical guide provides fast-access solutions for wilderness emergencies, drawing from a renowned text. It offers detailed clinical information, identification aids for flora and fauna, and an intuitive interface with powerful search capabilities. All content is available offline.
- Wilderness emergency solutions
- Identification of plants, animals, and insects
- Fast-access format with signs/symptoms and treatment
- Offline content access
- Powerful search with word suggestions
- Customizable text size
- Note and bookmark creation
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Field Guide to Wilderness Medicine - based on Dr. Auerbach’s critically acclaimed text Wilderness Medicine - offers fast-access solutions to all of the medical situations that can occur in non-traditional settings. This indispensable, compact survival guide is detailed enough to cover the clinical presentation and treatment of a full range of wilderness emergencies! Key Features: • Meet a full-range of emergency situations with the utmost effectiveness. Appendices address everything from environment-specific situations to lists of essential supplies, medicines, and many additional topics of care. • Compare what you are seeing with line drawings and color plates to quickly and accurately identify skin manifestations, plants, poisonous mushrooms, snakes, spiders, insects, etc. • Rapidly retrieve and comprehend wilderness survival information with the aid of an easily accessible format featuring "Signs and Symptoms" and "Treatment" sections in most chapters - combined with bulleted lists and text boxes. This app is very intuitive and easy to navigate, allowing you to browse the contents or search for topics. The powerful search tool gives you word suggestions that appear in the text as you type, so it is lightning fast and helps with spelling those long medical terms. The search tool also keeps a recent history of past search terms so you can go back to a previous search result very easily. You have the ability to create notes and bookmarks separately for text, images and tables to enhance your learning. You can also change the text size for easier reading. After the app has been downloaded, no internet connection is needed to retrieve the content of the app. All of the text and images are available to you on your device anytime, anywhere, and lightning fast. This app is also automatically optimized for whatever size device you are currently using, either phone or tablet. Check out https://usatinemedia.com to learn more and watch a video demo of this app. This interactive app contains the full content of Field Guide to Wilderness Medicine, 4th Edition by Elsevier. ISBN-13: 978-0323100458 ISBN-10: 0323100457 Editors: Paul S. Auerbach, MD, MS, FACEP, FAWM Redlich Family Professor of Surgery Division of Emergency Medicine Stanford University School of Medicine Stanford, California Benjamin B. Constance, MD Clinical Instructor Division of Emergency Medicine Stanford University School of Medicine Stanford, California Luanne Freer, MD, FACEP, FAWM Medical Director, Medcor Yellowstone National Park Founder and Director Everest Base Camp Medical Clinic Himalayan Rescue Association Bozeman, Montana Disclaimer: This app is intended for the education of healthcare professionals and not as a diagnostic and treatment reference for the general population. Developed by Usatine Media Richard P. Usatine, MD, Co-President, Professor of Family & Community Medicine, Professor of Dermatology and Cutaneous Surgery, University of Texas Health San Antonio Peter Erickson, Co-President, Lead Software Developer
Dyop Controller
This application acts as a remote control for a vision testing application on an iPad. It enables users to manage the entire vision test, including audio feedback, from a distance.
- Remote control for vision test
- Adjust audio feedback
- Control full test remotely
- Connects to iPad app
- Distance control
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This app is a remote control for the Dyop Vision Test iPad app. It allows a home user or a doctor to easily control the test, adjust the audio feedback and control the full test while being at a distance from the iPad Dyop Test Start the iPad Dyop Vision Test first and then on your iPhone simply press connect on the iPad that is running the Dyop Vision Test You will then be able to control every aspect of the Dyop Vision Test
Screenshots
Verdict
The clearest difference is price: Dyop Controller at Free against Field Guide Wilderness Med. 4E's $39.99. Field Guide Wilderness Med. 4E's advantage is iOS requirement (10.0 vs 13.0). On rating, ratings volume, update cadence and ads 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
Dyop Controller is free to download; Field Guide Wilderness Med. 4E costs $39.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Field Guide Wilderness Med. 4E against 5.0 for Dyop Controller. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
Field Guide Wilderness Med. 4E ships an update every 17 months, Dyop Controller every 16 months. The most recent releases landed on October 19, 2026 and October 20, 2026 respectively.
| Parameter | Field Guide Wilderness Med. 4E | Dyop Controller |
|---|---|---|
| Price | $39.99 | Free — better |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 17 months | Every 16 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 10.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 286 MB | 2 MB |
| Age rating | 17+ | 4+ |
| Developer | Usatine & Erickson Media LLC | Shemesh Health Solutions PTY Ltd |
Customer experience
Field Guide Wilderness Med. 4E
Dyop Controller
In-app purchases
Field Guide Wilderness Med. 4E
No in-app purchases
Dyop Controller
No in-app purchases
Questions
Is Field Guide Wilderness Med. 4E free?
Is Dyop Controller free?
Which has better reviews, Field Guide Wilderness Med. 4E or Dyop Controller?
Do Field Guide Wilderness Med. 4E or Dyop Controller have ads?
Which is updated more often, Field Guide Wilderness Med. 4E or Dyop Controller?
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