What is Sauce for Strava?
Sauce for Strava is a browser extension that rewrites Strava's own pages in place. Install it and the activity page you already look at gains peak-effort tables, extra fields, export buttons and a physics calculator — no second website, no sync wait, nothing to open.
It's the work of one person: Justin Mayfield has written all but a handful of the commits in the public repo, which is MIT-licensed and still being pushed to. Everything essential is free; a Patreon at $2 a month unlocks a small set of bonus features.
Key Features
Peak tables for more than power
Strava shows you peak power. Sauce adds peak tables for normalized power, xPower, pace including grade-adjusted pace, heart rate, cadence and VAM, and if it knows your weight it estimates running power too. Each row expands into the effort behind it.
The analysis page, unlocked
Sauce adds fields to Strava's analysis page and exposes the raw data values underneath it. For runs and swims it un-hides that page entirely, so you can do the same interval-level digging on a swim that Strava normally reserves for rides.
Live segment files for Garmin, from any activity
The unusual one. Sauce will build a Garmin live segment file from any activity by any athlete — including downhill segments, which Strava's own live segments won't do.
Perf Predictor
A full physics model of a cycling effort. Take any segment or slice of an activity and ask what power and what body weight produced that speed — then ask what happens if you add 20 watts or drop 2 kg. It works on time trials, climbs and descents.
Export anything
TCX, GPX or FIT export on any activity, not only your own.
Comments and settable FTP
Sauce puts the activity's comments inline on the page, where Strava leaves dead space. It also lets you set FTP and weight by hand, which turns on watts-per-kilo stats for activities where Strava doesn't have those numbers.
Who It's For
- People who read every activity page anyway and would rather the numbers were already there than open a second site
- Cyclists with power meters, who get NP, xPower and the peak tables Strava keeps to itself
- Runners, for grade-adjusted pace and an analysis page that isn't hidden
- Anyone chasing a specific segment, thanks to the Garmin live segment files and Perf Predictor
- Swimmers, who get the analysis page at all
Why It Works
Every other Strava analytics tool asks you to go somewhere else, wait for a sync, and learn a second interface. Sauce edits the page you were already looking at. The catch is the flip side of that: it's a browser extension living inside someone else's site, so when Strava changes its markup, Sauce breaks until it's patched. That has happened, and it gets fixed quickly, but it's the deal you're making.
