Sep 29, 2025
Run Like Nobody’s Watching (Because with TunedRun, We're Not)
In the U.S., privacy is a right for a reason.
Truly, take a moment to think about it. Are you your true self when you know you’re being watched? Speaking for myself, whenever I can be certain that no one is watching, I dance 🕺🏽. Music or not, to quote one Young MC, I “bust a move.” It’s how I express the joy that comes with the freedom from being judged or measured against someone else’s standard.
That’s why we built Tuned Run with privacy at its core from the very start.
From the moment you open the app, we only offer “Sign in with Apple.” Not just because it’s convenient for an iOS-only app, but because it allows us to build on Apple’s hard-earned reputation for keeping user data private (see: the Apple-FBI encryption dispute).
It doesn't stop there, after tapping “Sign in with Apple,” we use Apple's App Attestation to verify that the app — and, by extension, the runner’s device — is the only party attempting to sign up and communicate with our servers. Because all our backend services are written in server-side Swift (Vapor) and run on a Mac, we also get the added bonus of access to Apple's Security Framework. This provides us with powerful tools like:
This method lets us recreate certificates from the x5c array of DER blobs in Apple’s attestation object, securely verifying signatures. It also spares us from inventing an entirely new system for validating new runners and their devices’ subsequent requests.
Privacy and Transparency Go Hand in Hand
We also believe privacy and transparency must work together if a service is to have any moral ground to stand on. With that in mind, we’ve sworn off spinners and generic progress bars. 🙅🏽♂️
We want our users to know not just that progress is happening, but what is happening behind the scenes. With our playlist generation screen, for example, we have a little fun with it — using phrases like “Lacing up your run” or “Curating the perfect vibe.” But behind the playfulness are two important principles:
The runner should know what’s happening on their device — a device that, for many of us, has become more personal and ever-present since the rise of the smartphone in the late aughts and early 2010s.
They should understand that progress is being made, and, in the case of playlist generation, have the option to leave the screen, get notified when it’s complete, and return at their convenience.
"Sign in with Apple" and Login Phases
Playlist Generation Phases
At Tuned Run, privacy isn’t a feature — it’s the foundation. Because when you run without being watched, you move differently. Freer. More authentically. Maybe even with a little dance in your stride. 😉