FitKeep Guides

Plain explanations of the numbers in your training data, written from the code that calculates them. If you already use FitKeep and want step-by-step instructions, the Help Center has those.

Your best efforts, free: why we built FitKeep

Your fastest times at ten standard distances, across every activity you have, at no cost. How they are found and why we think they should be free.

Why your best effort times disagree

The same run can give two different 5K times. Device distance and GPS distance, and which way each error pushes your time.

Why your elevation gain is different in every app

Barometers, GPS altitude and server-side corrections, why adding up small climbs inflates the total, and which number FitKeep shows.

Why your running cadence shows half what it should

FIT files store running cadence per foot. What that looks like in the file and how FitKeep converts it to steps per minute.

Ask an AI assistant about your own training

Connect Claude or another MCP client to your FitKeep data, read-only, and revoke it whenever you like. What it can see and what it cannot.