CODE BLUE

Read the moving strip.
Then act.

An ECG drill for nurses and nursing students. Practice reading moving strips at real speed, drawn by the same engine as NCLS Monitor, the simulator used in resuscitation training.

Download on theApp Store

iPhone and iPad. Five free questions a day. Full version is a one-time purchase, no subscription.

Reading is only the start

Not just naming the rhythm: judge by pulse and blood pressure, then decide what to do next.

01Read a moving stripScrolls over the grid at 25 mm/s. Pause it, slow it down, look again. 48 rhythms.
02Cases, down to cause and actionRead the history, drugs and procedures, look at the strip and vitals, then answer the cause, the action and the expected treatment. 42 cases.
03Read the strip that changesSinus into VF. A PVC on the T wave into VF. The rhythm check the moment compressions stop. 18 strips only a moving trace can ask.

Screens

Ten questions a day, five minutes. Missed rhythms come back tomorrow.

Home: Today's 10, mastery, badges
Cases: situation → read → cause → act
Explanation: P, QRS, T highlighted; how to recognize; what to do

Pricing

Start free. Buy once if you keep going. No subscription.

FreeFull version
Questions per day5Unlimited
Rhythms12 basic48
Cases and changing strips—42 cases, 18 strips
Review, mistakes list, badges—✓
¥0
Try it first
¥980
One-time in-app purchase. Everything

NCLS course participants receive a code for the full version. Contact us for institutional licensing.

FAQ

Can I use it to study for an ECG certification?

It focuses on reading and responding to single-lead monitor strips. 12-lead interpretation is planned for a future version.

What are the sources?

JRC Resuscitation Guidelines 2025, 2025 AHA Guidelines for CPR and ECC, JCS/JHRS 2020 arrhythmia guidelines, ILCOR CoSTR and the NCLS textbook, all linked from the app's Sources screen.

Is there an Android version?

Currently iPhone and iPad only.

Is any data collected?

No. Progress is stored only on the device, and no account is needed.

Once you can read it, practice acting on it

Code Blue MonitorTurn an iPad into the patient monitor. The same strips, on a device-style layout, for instructors. NCLS courseA resuscitation course for nurses: watch the monitor, act, debrief.