Practice mode

Build the muscle memory before you need it.

Five drills, sensor-driven and educational. Once a month installs the moves before you need them.

Scenario mode

Three branching scenarios that chain the drills together: collapse, choking, stroke. Practise the decisions, not just the moves.

110 BPM metronome. Phone listens for your tap on a hard surface and scores you against the 100-120 BPM AHA band.

Untrained bystanders default to ~80 BPM. Two minutes of practise installs the right tempo.

Five back blows, pause, five abdominal thrusts. Mic-tap drill that scores the rhythm AND the cycle structure.

Bystanders either keep doing back blows forever or skip the cycle entirely. This installs the alternation.

Shows the nearest AEDs to you from OpenStreetMap and walks the seven-step pad-placement, stand-clear, shock sequence.

AED + CPR within 3-5 minutes triples cardiac-arrest survival. Every minute without defib costs ~10%.

Six-step roll into the lateral recovery position. Keeps the airway open and lets fluid drain rather than pool.

Used after seizures, after fainting, anytime someone is unresponsive but breathing. Three protocols, one drill.

Eight flashcards. Spot face droop and arm drift. Per-card explanation at the end, scored at the finish.

Stroke treatment window is hours, not days. Visual recognition is the limiter; this is the educational drill alongside the sensor-driven ones.

What practice mode is and is not

Is: the muscle-memory layer above reading a protocol. Tempo, sequence, hand position. Things your fingers need to know without thinking.
Is not: a substitute for a real first-aid class. Practise the moves here; learn the depth, the breath ratio, the contraindications from a qualified instructor.
Privacy: drill history stays on this device (IndexedDB). Mic / location only run while you are inside a drill and are released the moment you stop.

If this is real:open emergency mode and dial your local emergency number first.