Train by feel.
Stay in the zone.

RateGuard is a watch-first workout app that keeps your heart rate front and center with large glanceable visuals and haptic alerts when you drift outside your target zone.

No digging through metrics. No tiny charts. No constant wrist checking.

Coming soon to the App Store See how it works

RateGuard on Apple Watch showing 128 BPM in the green zone with workout metrics

Your heart rate becomes impossible to miss

A full-screen color-coded display turns your watch into a live training signal. The current BPM stays large and readable even mid-stride.

In zone — BPM 128 on a green background — In zone

Approaching threshold — BPM 147 on a yellow background — Approaching threshold

Above target — BPM 158 on a red background — Outside target

Approaching high BPM with yellow zone shading

Haptic alerts that let you stop checking your watch

RateGuard taps your wrist when you’re drifting too high or too low.

Fewer distractions. More consistent training. You run — the watch keeps you honest.

One soft tap when you approach a threshold
Three taps when you cross out of the zone
Two taps when you’re safely back in

RateGuard setup screen showing workout type and HR zone

Built for real workouts

RateGuard records workouts directly on Apple Watch using Apple Health integration.

Running
Walking
Cycling
HIIT
Strength training

Outdoor workouts can include route tracking and distance.

Workout summary showing avg HR, max HR, distance, calories, time in zone

The metrics you need.
Nothing you don’t.

Heart rate is always the focus. Secondary metrics stay visible but out of the way.

Distance
Pace
Elapsed time
Calories

No overloaded dashboards. No tiny unreadable complications.

Why RateGuard exists

Most fitness apps treat heart rate like a secondary statistic buried under layers of data.

But for endurance training, recovery work, fat-burning runs, aerobic base building, and threshold control, heart rate is the workout.

RateGuard was built around that idea.

Stay in the zone without constantly staring at your watch.

Everything you need.
Nothing in the way.

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Live zone monitoring

Continuous heart-rate tracking during workouts with immediate visual feedback.

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Wrist haptics

Get alerted the instant you approach or cross your target zone.

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Workout recording

Workouts save directly into Apple Health and Fitness.

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Outdoor tracking

Capture route and distance for outdoor workouts.

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Fast start

Open the app, choose your workout, and go.

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Minimal interface

Designed for motion, sweat, glare, and quick glances.

For every kind of run

Set the zone that matches your goal and let the watch handle the rest.

Base training

Stay aerobic without creeping into threshold effort.

Tempo runs

Hold target intensity without overcooking the workout.

Recovery days

Prevent easy runs from turning into hard runs.

HIIT sessions

Manage intervals and recovery windows by heart rate.

Zone 2 training

Keep effort controlled without obsessively checking metrics.

One glance tells you everything

Bold typography and full-screen color states so you instantly know where you stand. Green means go. Yellow means back off. Red means you’ve crossed the line.