Mike Johns

Cork

2026

As one of the many people who have to administer a medication via self-injection, keeping track of the places on your body you’ve recently used is actually pretty tough! And site rotation is actually really important to medication effectiveness.

I built this utility app so I could easily see which sites might be a little more fresh and which I should avoid. It has some nice features, like easily choosing to log against the previous date if you’re logging right after midnight. This is a huge help when traveling.

Cork runs on both macOS and iOS, and syncs injection history between devices using your iCloud account, so it’s completely private.

I hope to get this ready for wider distribution in the future, but for now, it’s certainly helping me a ton. If you’re interested, let me know! Email is my name @hey.com.

And the name, Cork? Well, sometimes you feel like a corkboard, just getting push pin after push pin shoved in. Seemed like a good fit!