Your session engine. Precise from the first set to the last.

ZON's workout player runs your training blocks, circuits, EMOM and intervals, with automatic progression, contextual timers and no unnecessary taps.

Free to download. Android beta: join the waitlist

ZON workout builder with a run segment and Hyrox stations
  • Native circuits and EMOM, automatic rotation with synchronized timers

  • Block focus mode, the active block full screen, zero distraction

  • Haptic auto-advance, a vibration and an audio cue when it's time for the next exercise

The problem it solves
Your fitness app can't handle a 4-exercise circuit with 30-second rests between each. You time everything manually. You lose focus at the most critical moment.

Structured training deserves a structured engine

The best programs are not exercise lists. They are architectures of effort: blocks with precise formats, calculated intervals, deliberate rest periods. If your app doesn't understand this logic, the intent of the program gets lost on every session.

ZON was built to run real programs, not flat lists.

What the workout player handles for you

Circuits and supersets

The player identifies each circuit block in your program and manages the rotation. Completed exercises collapse into compact rows, the current exercise expands into a full card, and upcoming exercises appear as subtle previews. No manual navigation required.

EMOM and interval blocks

For EMOM (every minute on the minute) or interval formats, ZON starts the timer at the top of the minute, advances the block and handles work and rest transitions with haptics and audio. You never look at your phone to know when to go.

Block focus mode

Switch any block to full screen. The interface reduces to the essentials: current exercise, timer, set log. Everything else disappears. Total concentration, minimal interaction.

Live Activities and Apple Watch

Rest timers and transitions follow you to your Lock Screen and your watch. Log a set from your wrist, advance a block or start a recovery timer without touching your phone.

Supported formats

FormatBehavior
Classic setWeight, reps and RPE logging, configurable rest timer
Superset / circuitAutomatic rotation, rest after the full round
EMOMTimer locked to the minute, auto-advance
Time intervalsWork, rest, repeat, with a time cap
Hybrid cardio (run)Seamless switch to the full-screen GPS tracker
Hyrox stationsRuns and stations chained in the same session

Program intent, preserved

A well-built program contains precise decisions about effort density, fatigue management and progression, whether you wrote it yourself, imported it or let the AI generate it. The workout player respects those decisions instead of flattening them into a basic list.


In the ZON app on iPhone. Android is in beta: join the waitlist at justzon.com/android-waitlist.

Your next session starts here.

Download ZON for free on the App Store. On Android? Join the beta waitlist.