Ask HN: Recent “Personal Tracker” App?

Recently an application on the HN homepage caught my eye. It had the following properties:

* It was a personal tracker for arbitrary data. For example, you could record that you had a certain number of steps today, but you could also record that you read a book and what it was.

* It seemed to be primarily an iPhone app. I don't think there was an Android app, though there might have been.

* It was not a habit tracker like Loop.

* It hit the front page of HN sometime in the last month, but not in the last few days.

Unfortunately I put my phone down to play with my kiddos and forgot what it was, and perusing my history going back a few weeks along with Google searches hasn't turned up anything.