My WHOOP has no screen. My Kindle had no job. So I put them together
I run a lot, so every morning I check my recovery and decide whether to run or take a rest day. I wanted an always-on screen that would let me see everything at a glance. Then I remembered the old Kindle collecting dust in the corner. So I built this: WHOOP API → a server on my Mac mini → grayscale PNG → Kindle screensaver. It’s now open source, including the full setup guide.
In plain words
Kindle for WHOOP transforms an old Kindle e-reader into a low-power health dashboard for WHOOP fitness trackers. The open-source project pulls data from the WHOOP API, processes it on a Mac mini, and displays recovery metrics as a grayscale image on the Kindle's e-ink screen. It's designed for runners and athletes who want to check their daily recovery status at a glance without reaching for their phone, breathing new life into unused devices.
written from the facts on this page · September 2026
From the sources
Turn a spare Kindle into a low-power WHOOP dashboard. - kaibuildsai/kindle-for-whoop
My WHOOP has no screen. My old Kindle had no job. So I put them together. A personal experiment that gives an old Kindle a second life as a low-power, glanceable WHOOP health display. I wanted a simple way to glance at my WHOOP data without checking my phone. The result is an always-visible e-ink dashboard that wakes briefly to refresh, then leaves the latest image on screen without keeping the Kindle fully powered. Missing or still-processing measurements appear as labels or dashes rather than misleading zeros. Training Load is calculated by this project; it is not a field returned by the WHOOP API. See Dashboard content strategy for the complete field definitions and current limitations.…from github.com
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