Zero cold start

I built Apex Run for one reason: running deserves a dedicated tool. Not a general fitness tracker that also handles cycling and swimming — something built entirely around gathering and analyzing running data, for runners who actually care about the numbers.

Most running apps make you start fresh. You download something new, and it greets you with an empty screen. Your entire running history — years of early mornings, long runs, race days — sits in Apple Health, and the app just ignores it.

The very first thing I wanted from Apex Run was for it to feel immediately useful. Not a blank slate waiting to be filled — a picture of who you already are as a runner, starting to take shape the moment you open it.

How syncing works

When you open Apex Run for the first time, it begins syncing your Apple Health history right away — starting from your most recent runs and working backward through time. Recent data arrives first, so you’re not staring at an empty screen while the app catches up.

If you have years of history, the full sync may take a while to complete in the background. That’s fine — you can start exploring your recent data immediately. And if you ever need to continue sync, there’s a manual trigger in Settings that picks up where it left off.

Every run you’ve ever recorded through Apple Watch or a third-party app that writes to Apple Health is included:

• All workout routes and GPS tracks
• Heart rate, pace, cadence, and power data
• Personal bests at standard distances (1K through marathon), calculated using a sliding window over your full history
• Cumulative stats: total distance, total time, longest run

Why it matters

A running app that only knows about the last few weeks of your training is missing the point. The most meaningful numbers — your VO2 Max trend over six months, your long-run progression, whether your fitness is actually improving — only become visible over time.

Zero Cold Start means Apex Run earns your trust on day one by respecting the history you’ve already built.