Built for race day and everyday training

Keep pacing, training, and peace of mind in one app.

PaceMaster is an iPhone companion for runners who want fast pace-to-time conversion, race prediction, training-zone planning, and optional live location sharing with family or teammates.

Available for iPhone. Downloads and subscriptions are handled by Apple.

Pace and finish-time planning Work from target pace to finish time, or reverse the flow in seconds.

Race prediction Estimate likely results from 5K through the marathon from recent tests.

Training zones and plans Turn current fitness and heart-rate inputs into structured guidance.

Live sharing Share a Runner ID so family can follow your current session in the app.

PaceMaster

A running toolkit for disciplined training, and a little reassurance for the people following along.

Pacing Quick race-day references

Training Zones Guide workout intensity

Prediction See realistic race targets

Live Sharing Only after you start a session

Core Features

One focused workflow for training decisions, race prep, and live sharing.

Race Day

Two-way pace and finish-time conversion

Start with a target pace to preview finish-time references, or start with a goal finish time to back into average pace and useful splits.

Prediction

Race performance prediction

Use recent test performances to estimate likely outcomes from the 5K to the marathon and choose more grounded race goals.

Training

Training zones and training plans

Translate current fitness, weekly mileage, and heart-rate inputs into easier-to-follow pacing and workout guidance.

Live Sharing

Location sharing for family and teammates

Once you actively start a session, PaceMaster syncs locations with a battery-friendly cadence so followers can check your current progress in the app.

Trust and Privacy

We try to keep the data story simple: local when possible, clearly disclosed when cloud services are involved.

Privacy First

Live sharing is opt-in

Your location is only synced after you explicitly start a sharing session.

Apple Stack

StoreKit, CloudKit, and maps

Subscriptions are handled by Apple App Store, while live sharing uses Apple iCloud / CloudKit and map capabilities.

Real Use

Built for training and race scenarios

The app is designed around practical running decisions, but results still need your own judgment and context.