Smart CPR Check

Can you perform CPR just like you learned in training? Still remember the rhythm? Refresh your skills right on your wrist.
This app is designed for individuals who have previously completed CPR (Cardiopulmonary Resuscitation) training and wish to maintain or refresh their skills over time.
It is an Apple Watch–only app, intended for use directly on your watch (not available on iPhone alone).
■ Preparation
Before starting, please prepare a cushion, sponge, or a CPR training manikin for safe chest compression practice.
■ How to Use
The app provides audio and vibration cues at an optimal compression tempo (100–120 bpm, adjustable in settings).
Follow the beat and practice compressing the cushion with your hands stacked, using the heel of your palm, just as in real chest compressions.
■ Tempo Detection & Feedback
The app uses the Apple Watch’s built-in accelerometer to detect your chest compression tempo.
The detected tempo is updated every 10 seconds and displayed on-screen:
Green: Optimal range (100–120 bpm)
Blue: Below 100 bpm
Red: Above 120 bpm
You can adjust detection sensitivity in the settings to match your preference.
■ Notification Features
Time-based alerts: Set a duration (e.g., 180 seconds) to receive a notification when the time is up.
Repetition alerts: Set a number of compressions (e.g., 30 reps) and get notified when you reach it.
Disclaimer & Caution
This app is for training and review purposes only. It is not intended for real-life emergency use.
In a real emergency, always follow certified CPR procedures.
This app estimates chest compression tempo using the accelerometer.
It does not measure the force or depth of compressions directly. Therefore, it cannot evaluate the quality or depth of chest compressions.
Apple Watch is required. This app does not function independently on iPhone. Please ensure your device and watchOS version are supported.
The developer is not responsible for any injury, malfunction, or misuse resulting from the use of this app.
Use in a safe, open area with adequate space and be mindful of your surroundings.