EchoRef vs Cardiotox
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EchoRef
This educational reference app provides comprehensive information on point-of-care ultrasound (POCUS), echocardiography, and cardiac measurements. It includes lessons on interventional procedures and hemodynamic calculations for medical professionals.
- Point-of-care ultrasound (POCUS)
- Transthoracic echocardiography (TTE)
- Transesophageal echocardiography (TEE)
- Cardiac dimensions and valve measurements
- Hemodynamic and ultrasound calculations
- Interventional procedure lessons
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EchoRef is a free iOS ultrasonography educational reference covering point-of-care ultrasound (POCUS), transthoracic echocardiography (TTE), and transesophageal echocardiography (TEE). Additionally, it contains cardiac dimensions, native/prosthetic valve measurements, hemodynamic/ultrasound calculations, and lessons ranging from interventional procedures to mechanical circulatory support. This app is intended for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you may have regarding a medical condition, and never disregard or delay seeking professional advice because of information provided by this app. About Rishi Kumar, MD, FACC ("RK.MD") I'm an adult cardiothoracic anesthesiologist and cardiovascular ICU intensivist practicing in academic medicine. I'm passionate about teaching with free, open-access medical education. Learn more on my site: https://rk.md
Cardiotox
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Cardiotox® : The drug-induced/iatrogenic cardiotoxicity website & App The companion website and App Pneumotox ® addresses drug- and chemical-induced/iatrogenic pneumotoxicity. By Philippe Camus MD Professor (emeritus) (board-certified pulmonary medicine, cardiology) - Université Bourgone-Europe, Dijon, France. Cardiotox is an aid to the diagnosis and management of cardiotoxicity and cardiac reactions suspected of being induced by drugs, herbals, chemicals, radiation therapy and/or of iatrogenic origin.. Causality assessment and exact diagnosis are the full responsibility of the user. Cardiotox is designed to provide regularly-updated information on drugs causing cardiac toxicity (> 530), resulting patterns of involvement (> 400) and bibliography (3,950 references as of August 2026) within a few minutes. That may be the real crux in emergency situations, and enabling prompt withdrawal. Yet, double-checking in and from other sources is indicated. Cardiotox rests on a bibliographic repository of drug-induced pneumo- and cardiotoxicity built since 1978, that amounts to > 50,000 references as of August, 2026. The vast majority of these is indexed in PubMed. All references were and are still being carefully reviewed for reliability and causality by the founder, then indexed under the umbrella of the corresponding drug or agent. One can access Cardiotox by both causative drugs, chemicals, herbals, substances of abuse, inhalants, gases, radiation therapy and/or patterns of involvement. Drug names are generic (International Nonproprietary Names (INN), alphabetical), not brand. It may be appropriate to check the exact composition of any proprietary drug, as any other added substance or excipient can be toxic.Matching generic and brand names is country - dependent. Patterns are grouped by families according to the main anatomic site of involvement. If a drug or drug reaction is listed in Cardiotox, this does not equate the patient is demonstrating actual toxicity. A “Diagnosing DICD” window in Cardiotox can help fortify the diagnosis. Lack of case in the literature or in Cardiotox does not exclude a diagnosis of drug cardiotoxicity as there may be unpublished cases, you may be seeing the first case ever, or we may have overlooked some information. In such situations, Cardiotox or Pneumotox cannot be held responsible. At any rate, the founder of Cardiotox can be contacted by mail 7/7. A search for exposure to drugs, substances of abuse, and/or chemicals must be done exhaustively with the patient, family, health professionals, pharmacy and/or law enforcement personel. This can be life-saving, enabling appropriate drug withdrawal. Caution: Drug therapy withdrawal can cause flare of the background disease. Deliberate rechallenge of patient with the drug can be hazardous and lead to fatal consequences. Early sampling of body fluids for drugs and/or metabolites is indicated as early as possible, particularly in the severely ill. Knowledge of toxidromes and antidotes to combat them is also precious. Where in doubt, consider double-checking PubMed, your affiliated Safety for Medicines Department/Agency and the Pharmacovigilance Department of drug companies. They may host more and/or undisclosed information. Patients should be reassured as such incidents are rare. If needed, they are invited to consult with their treating physicians or via Cardiotox. You may contact Cardiotox through the contact window. ALL RIGHTS RESERVED The current version of Cardiotox website and App were developed by Akyos Communication, Dijon, France Pneumotox received a generous Grant from the ERS in 2019
Screenshots
Verdict
The clearest difference is update cadence: EchoRef at every 2 months against Cardiotox's every 35 months. Cardiotox's advantage is iOS requirement (16.4 vs 26.0). On price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.
EchoRef ships an update every 2 months, Cardiotox every 35 months. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.
| Parameter | EchoRef | Cardiotox |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (1.4K ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1.4K — better | — |
| Update frequency | Every 2 months — better | Every 35 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 105 MB | 54 MB |
| Age rating | 17+ | 17+ |
| Developer | Rishi Kumar | Philippe Camus |
In-app purchases
EchoRef
No in-app purchases
Cardiotox
No in-app purchases
Questions
Is EchoRef free?
Is Cardiotox free?
Do EchoRef or Cardiotox have ads?
Which is updated more often, EchoRef or Cardiotox?
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