01
Blocks
Circuit of 4. Three rounds. One tap.
Group intervals into named Blocks that repeat as a unit — a work/rest pair, a five-move circuit, whatever the regimen calls for. Stop rebuilding the same four intervals three times over.
Precision. Not Wellness.
HIIT Helper builds and runs custom interval workouts — configurable intensity, repeatable Blocks, and heart-rate gated timing with a watch companion that starts the session from your wrist.
02
Intensity
Engineer effective results.
Every interval carries an intensity value. Hit your limits with precision — not by feel, by design.
03
Wearable Integration
Start it from your watch.
Browse regimens and start a workout from an Apple Watch or Wear OS companion. The phone runs the engine; the watch shows the countdown, the queue, and the haptics.
04
Heart-Rate Gated Intervals
Let your heart decide, not the clock.
Pair a watch and an interval can end on a heart-rate threshold or zone instead of a fixed duration. Heart rate is read live to advance the workout and never stored, synced, or logged.
05
Offline-First
Works without a connection.
Regimens sync to the cloud the moment you have one, and keep working without it.