Comparison

CPR Now App vs ECG Builder

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

Head to head
About

CPR Now App

This app provides a metronome to guide users through Hands-Only CPR chest compressions at the recommended rate of 100-120 bpm. It aims to empower individuals to perform effective CPR during cardiac arrest events, turning a smartphone into a potentially life-saving tool.

Highlights
  • Hands-Only CPR assistance
  • Metronome for compression rate
  • 100-120 bpm guidance
  • Supports medical personnel and everyday individuals
  • Turns smartphone into a life-saving tool
Features
Read full description

CPR Now is a free & simple CPR app to assist with Hands-Only CPR/chest compressions during a cardiac arrest event. Let our metronome guide you to the proper chest compression rate & rhythm (100-120bpm per American Heart Association). Our CPR app sets the pace. With CPR Now, medical personnel, first responders, and everyday individuals can perform the proper and effective rate of compressions during CPR with our app metronome. With your smartphone, anyone can achieve the perfect compression ratio. Turning your everyday device into a potentially lifesaving device. To give someone the best chance of survival in Cardiac Arrest is immediate CPR (Bystander CPR/Sidewalk CPR) and not wait for First Responders.

About

ECG Builder

Features
Read full description

Draw any 12-lead ECG in seconds. Describe it in plain words or build it tool by tool, then export it for your slide, handout or exam. DESCRIBE IT AND IT DRAWS "Inferior STEMI at 52 with reciprocal change." "Atrial fibrillation with RVR at 140." "LBBB with a paced rhythm." The sheet prints onto real millimetre paper, left to right, the way a recorder does. OR BUILD IT BY HAND Eleven tools, one question each: - Rhythm, Rate, Intervals - Conduction, Ischaemia, Repolarisation - Chambers, Ectopy, Pacing - Syndromes, Sequence NOT A LIBRARY OF PICTURES Every tracing comes out of a physiologic model, so the findings agree with each other. - Add inferior ST elevation and the reciprocal depression appears in aVL by itself - Drag the rate under 60 and sinus rhythm relabels itself sinus bradycardia - Pace the ventricle and the spike projects onto all twelve leads, with the right polarity in each WHAT IS IN IT - 26 rhythms, sinus arrhythmia through torsades to asystole - 21 named patterns in one tap: Wellens A and B, de Winter, Brugada 1 and 2, S1Q3T3, pericarditis, early repolarisation, hypothermia, digoxin, hyperkalaemia, LVH with strain, long QT and more - Sequence: the rhythm changes partway through the strip, with a shock where you want it - 5 layouts, including 3x4 with a rhythm strip and a stacked layout for the phone - 4 papers, thermal cream to defibrillator monitor - 25 or 50 mm/s, 10 mm/mV. Hold a ruler to the screen and the intervals measure correctly - Baseline drift, muscle tremor and mains hum, each on its own slider - A patient header the way a machine prints it: name, age, sex, rate, rhythm, date and time. All of it yours to set, all of it fictional TEACHING BOARD (IPAD) - Hide the tools and the sheet becomes a board - Draw on it with Apple Pencil. Marks stay on their beats at any zoom - The frontal axis wheel and the chest lead map sit beside it, each with room for the pen - Play runs all twelve leads live at the speed printed on the sheet - Record the screen while you teach and send the video to your students - Save the board as a Letter handout EXPORT - PNG for a slide - Vector PDF at true physical size, still measurable with a ruler once printed - Yours to use in slides, handouts, exams and question banks, including commercially FREE AND PRO Free builds a normal twelve-lead and will show you any other one. Ask for torsades de pointes and you get torsades de pointes, drawn in full, as a watermarked preview you can read but not edit or export. ECG Builder Pro is one purchase, not a subscription, and it covers Family Sharing. It unlocks every rhythm and every finding to edit, rolls a new patient with the same diagnosis, and lets the sheet leave the app clean. No account, no sign-in, no network. The app works in Airplane Mode and nothing you type leaves the device. EDUCATIONAL USE ONLY Every tracing is synthetic, generated. ECG Builder is not a medical device and must not be used for diagnosis, treatment, or any patient-care decision. ECG Builder is a CardioLens product.

Screenshots

CPR Now App4 screens
ECG Builder4 screens

Verdict

The call

The clearest difference is in-app purchases: CPR Now App at none against ECG Builder's 1. CPR Now App also leads on iOS requirement (15.0 vs 17.0). ECG Builder's advantage is update cadence (daily vs every 6 weeks). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ECG Builder sells 1 one-off in-app purchase. CPR Now App asks for nothing beyond the download.

UpkeepUpdate frequency

CPR Now App ships an update every 6 weeks, ECG Builder daily. The most recent releases landed on October 1, 2026 and September 29, 2026 respectively.

Scorecard3 real differences · 7 level
CPR Now App versus ECG Builder: the parameters behind the verdict, then further details
ParameterCPR Now AppECG Builder
PriceFreeFree
Rating4.6 (13 ratings) — better—
Positive reviews83.3% of reviews—
Number of ratings13 — better—
Update frequencyEvery 6 weeksDaily — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPod, Apple Watch — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size18 MB9 MB
Age rating4+17+
DeveloperKeegan SauerMark Daniel Figueroa

In-app purchases

None

CPR Now App

No in-app purchases

1 purchases

ECG Builder

One-time1
  • ECG Builder Pro$24.99

Questions

Is CPR Now App free?
CPR Now App is free to download, with no in-app purchases.
Is ECG Builder free?
ECG Builder is free to download, with in-app purchases available.
Do CPR Now App or ECG Builder have ads?
Neither CPR Now App nor ECG Builder shows ads.
Which is updated more often, CPR Now App or ECG Builder?
CPR Now App ships an update every 6 weeks, and ECG Builder daily. Most recently, CPR Now App was updated on October 1, 2026 and ECG Builder on September 29, 2026.

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