Comparison

ECG Challenge vs AB Blood

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ECG Challenge

This app offers over 150 real-world ECG strips for medical professionals and students to practice and improve their interpretation skills. It provides detailed rationales and personalized study options to build confidence and enhance patient care.

Highlights
  • 150+ real-world ECG strips
  • Detailed rationales
  • Personalized study options
  • Progress tracking
  • Clinically obtained ECGs
Features
Currently charting
Read full description

Sharpen Your ECG Interpretation Skills – Anytime, Anywhere Master the art of ECG interpretation with ECG Challenge, the go-to app for paramedics, nurses, medical students, and physicians. Created by Dawn Altman, a highly respected nurse, paramedic, and the ECG Guru, this app features over 150 real-world, clinically obtained ECGs to help you build confidence, improve accuracy, and enhance patient care. Why Choose ECG Challenge? Real-World Practice – Work with authentic ECG strips based on actual clinical cases. Smart Learning Tools – Gain deeper understanding with detailed rationales and helpful hints. Personalized Study Experience – Choose between random review or structured challenges to match your learning style. Track Your Progress – The “Mastered It” feature allows you to focus on areas that need more attention. Built with Limmer Education’s trusted review technology, ECG Challenge delivers a dynamic, effective, and engaging way to refine your ECG interpretation skills—so you can make confident, accurate decisions in real-world scenarios. Download today and take your ECG skills to the next level.

About

AB Blood

Features
Read full description

Discover a unique program for studying blood group compatibility! With the help of our program, you will: • Learn which blood groups are compatible with each other, and which group can be replaced in emergency situations. • Understand what will happen to the body when incompatible blood is transfused. • Get acquainted with lists of products that help thin or thicken the blood. Why is this important? Each person's blood group is innate and unchanged throughout life. The main blood classification systems: • The ABO system (four blood groups) • The Rh factor (positive or negative) Maintaining compatibility according to these systems is critically important for safe blood transfusion. • People with blood group I are universal donors. • People with blood group IV are universal recipients. Remember: according to modern standards, blood can only be transfused from a donor with an identical group. Don't miss the opportunity to understand the basics of vital information!

Screenshots

ECG Challenge4 screens
AB Blood4 screens

Verdict

The call

The clearest difference is update cadence: AB Blood at every 3 months against ECG Challenge's every 11 months. AB Blood also leads on price ($2.99 vs $5.99). ECG Challenge's advantage is chart position (#85 vs unranked). On ads, in-app purchases, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

ECG Challenge costs $5.99 and AB Blood $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

ECG Challenge ships an update every 11 months, AB Blood every 3 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

Scorecard3 real differences · 8 level
ECG Challenge versus AB Blood: the parameters behind the verdict, then further details
ParameterECG ChallengeAB Blood
Price$5.99$2.99 — better
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 11 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
Best chart rank#85 — better—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.616.6 — better
Further details — not scored
Size51 MB5 MB
Age rating17+4+
DeveloperLimmer CreativeAlexander Berkovich

In-app purchases

None

ECG Challenge

No in-app purchases

None

AB Blood

No in-app purchases

Questions

Is ECG Challenge free?
ECG Challenge costs $5.99, with no in-app purchases.
Is AB Blood free?
AB Blood costs $2.99, with no in-app purchases.
Do ECG Challenge or AB Blood have ads?
Neither ECG Challenge nor AB Blood shows ads.
Which is updated more often, ECG Challenge or AB Blood?
ECG Challenge ships an update every 11 months, and AB Blood every 3 months. Most recently, ECG Challenge was updated on November 6, 2026 and AB Blood on November 3, 2026.

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