SnakeBite911 vs MobilEM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SnakeBite911
This app provides emergency guidance for snakebite incidents, including immediate steps, identification of North American venomous snakes, and a tool to track venom spread. It offers offline functionality and quick access to emergency services.
- Emergency snakebite support
- Quick dial 911
- Actionable do's and don'ts
- Venom Tracker photo tool
- North American venomous snake identification
- Safety and avoidance tips
- Offline functionality
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*New app! This new SnakeBite911 consolidates an older suite of apps (SnakeBite911ER, SnakeBite911FR and SnakeBite911) into one tool. It features a refreshed design and a new emergency mode for quick access to core functionality.* This useful guide can help educate you about North American venomous pit viper snakes (including rattlesnakes, copperheads and cottonmouths), how to best avoid them, and what to do and what NOT to do should a snake strike happen! This app also works without signal. Features • Emergency support for snakebite emergencies • Quick dial 911 • List of actions you should/shouldn’t take in supporting the snakebite victim • Venom Tracker photo tool to log the spread of venom, which can help save diagnostic and treatment time when the victim gets to the ER • Learn about North American venomous snakes and how to identify them • Learn how to keep safe from snakes and avoid being bitten The new SnakeBite911 app comes from the manufacturers of CroFab® CrotalidaePolyvalent Immune Fab (Ovine), a sheep-derived antivenin indicated for the management of adult and pediatric patients with North American crotalid envenomation. The term crotalid is used to describe the Crotalinae subfamily (formerly known as Crotalidae) of venomous snakes which includes rattlesnakes, copperheads and cottonmouths/water moccasins. IMPORTANT SAFETY INFORMATION CONTRAINDICATIONS Do not administer CroFab® to patients with a known hypersensitivity to any of its components, or to papaya or papain unless the benefits outweigh the risks and appropriate management for anaphylactic reactions is readily available. WARNINGS AND PRECAUTIONS Coagulopathy: In clinical trials, recurrent coagulopathy (the return of a coagulation abnormality after it has been successfully treated with antivenin), characterized by decreased fibrinogen, decreased platelets, and elevated prothrombin time, occurred in approximately half of the patients studied; one patient required re-hospitalization and additional antivenin administration. Recurrent coagulopathy may persist for 1 to 2 weeks or more. Patients who experience coagulopathy due to snakebite should be monitored for recurrent coagulopathy for up to 1 week or longer. During this period, the physician should carefully assess the need for re-treatment with CroFab® and use of any type of anticoagulant or anti-platelet drug. Hypersensitivity Reactions: Severe hypersensitivity reactions may occur with CroFab®. In case of acute hypersensitivity reactions, including anaphylaxis and anaphylactoid reactions, discontinue infusion and institute appropriate emergency treatment. Patients allergic to papain, chymopapain, other papaya extracts, or the pineapple enzyme bromelain may also have an allergic reaction to CroFab®. Follow-up all patients for signs and symptoms of delayed allergic reactions or serum sickness (e.g., rash, fever, myalgia, arthralgia). ADVERSE REACTIONS The most common adverse reactions (incidence ≥ 5% of subjects) reported in the clinical studies were urticaria, rash, nausea, pruritus and back pain. Adverse reactions involving the skin and appendages (primarily rash, urticaria, and pruritus) were reported in 12 of the 42 patients. Two patients had a severe allergic reaction (severe hives and a severe rash and pruritus) following treatment and one patient discontinued CroFab® due to an allergic reaction. Recurrent coagulopathy due to envenomation and requiring additional treatment may occur. Find out more at www.CroFab.com, which includes the full Prescribing Information. To report suspected adverse reactions, contact 1-877-377-3784 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.
MobilEM
Provides fast, evidence-based clinical guidance for emergency medicine professionals. Access updated recommendations on a wide range of topics, including antibiotics, toxicology, and critical care. Offers free content, individual purchases, and an all-access subscription.
- Evidence-based recommendations
- Antibiotic and toxicology guidance
- EKG and orthopedic injury protocols
- Airway and pediatric emergency management
- Critical care medication information
- Fast navigation and universal search
- Bookmarking and note-taking
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One of our greatest privileges at EMRA is offering resources that can help make every clinical shift easier, through evidence-based guidance in your pocket. Get updated recommendations for antibiotics, toxicology, EKGs, orthopedic injuries, airway management, pediatric emergencies, splinting, critical care medications, and more. Enjoy free content, purchase our resources a la carte, or subscribe to our all-access pass (best value!) to take full advantage of these key features: • Fast, easy navigation • Powerful universal search • Bookmarking • Note-taking fields • Continual updates that require no action on your part We hope you find MobilEM to be useful; check back often, as we will be adding new content on a regular basis. Please note: EMRA is committed to your privacy. See our policy at https://www.emra.org/about-emra/privacy-policy/. Terms of Use: This and all other digital reference content, including all content offered under subscription is intended for a single user on devices belonging to that user. Use of this app running on a common device shared by an organization is disallowed. For further information on terms of use and EULA please see: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ This app is intended for the US healthcare market.
Screenshots
Verdict
The clearest difference is in-app purchases: SnakeBite911 at none against MobilEM's 12. SnakeBite911 also leads on iOS requirement (13.0 vs 15.0). MobilEM's advantage is review sentiment (45% vs 20%) and rating (3.6 vs 3.3). On price, 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
Both are free to download. MobilEM sells 12 in-app purchases, starting at $1.99 per year. SnakeBite911 asks for nothing beyond the download.
MobilEM holds the better App Store score, 3.6 against 3.3. Both are backed by a comparable volume of ratings — 18 and 39 respectively. Written reviews point the same way: 20% of SnakeBite911's written reviews are positive against 45% of MobilEM's.
SnakeBite911 ships an update every 3 months, MobilEM every 2 months. The most recent releases landed on September 26, 2026 and October 11, 2026 respectively.
| Parameter | SnakeBite911 | MobilEM |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (18 ratings) | 3.6 (39 ratings) — better |
| Positive reviews | 20.0% of reviews | 45.0% of reviews — better |
| Number of ratings | 18 | 39 — better |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Best chart rank | — | #58 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 159 MB | 205 MB |
| Age rating | 17+ | 17+ |
| Developer | BTG plc | Emergency Medicine Residents' Association |
Customer experience
SnakeBite911
MobilEM
In-app purchases
SnakeBite911
No in-app purchases
MobilEM
- Ventilator Mgmt. Subscription$1.991 Year
- Pediatric Qwic$1.991 Year
- MobilEm Airway Management$4.991 Year
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- Trauma Guide$4.991 Year
- Antibiotic Guide Subscription$9.991 Year
- MobilEm Ortho Guide$9.991 Year
- MobilEM Tox Guide$9.991 Year
- PressorDex$9.991 Year
- EKG Guide Subscription$9.991 Year
- Pain Management$9.991 Year
- PEM Fundamentals Subscription$9.991 Year
- MobilEm All Access Pass1 Month trial$39.991 Year









