Volt - Your treadmill runmate

Volt turns your iPhone (and Apple Watch) into a smart control panel for your Bluetooth treadmill. Connect once, then control speed and incline, watch your live stats, and let Volt automatically adjust your pace for you — all while every workout is saved straight to Apple Health.

Works with any treadmill that supports the Bluetooth FTMS (Fitness Machine Service) standard.

LIVE TREADMILL CONTROL

• Start, pause, resume, and stop your treadmill directly from your phone
• Adjust speed and incline in real time, no need to touch the console
• See live speed, distance, incline, elapsed time, and calories at a glance
• Safety-first pairing: nearby treadmills are ranked by signal strength, and Volt warns you if a machine looks like it's already in use before you connect

SMART WORKOUT MODES

• Free Run — full manual control, your pace, your rules
• Heart Rate Cruise Control — set a target heart rate and Volt automatically raises or lowers treadmill speed to keep you in your zone
• HIIT Intervals — automated sprint/walk intervals with treadmill speed changes handled for you, so you can focus on the effort

APPLE WATCH COMPANION

• Mirrors your live speed, distance, incline, and heart rate to your wrist
• Start and stop workouts from either device — they stay in sync
• Optional haptic feedback for pace changes and interval transitions
• Built for Always-On Display, so your stats stay sharp and readable without draining your battery

APPLE HEALTH INTEGRATION

• Every completed workout is saved to Health automatically — duration, distance, calories, and heart rate
• Works whether or not you're wearing your Apple Watch: Volt saves the workout from your phone if your watch isn't paired for the session
• Detailed per-second telemetry means your workout history shows real speed and heart-rate charts, not just a summary

DYNAMIC ISLAND & LIVE ACTIVITY

• Track your run from your iPhone's Lock Screen or the Dynamic Island without opening the app
• Live speed, distance, and elapsed time, updated as you move

WORKOUT HISTORY

• Every past workout in one place, with distance, duration, calories, and average pace
• Tap into any workout for a full speed, incline, and heart-rate breakdown over time

MADE FOR RUNNERS AND WALKERS

• Personalize calorie estimates with your own body weight
• Available in English and Hungarian
• A clean, distraction-free dashboard designed to be read at a glance, whether you're sprinting or walking the dog on your $200 basement treadmill

Volt doesn't try to be a full fitness platform — it does one thing well: make your Bluetooth treadmill smarter, safer to control, and fully connected to the Health app you already use.