dodecahedron

I don't know who needs to know about this, but:

I just discovered the Android app "Periodically". It's described as an "event logger". It's for keeping track of when a recurring thing has happened, and figuring out what the average time is between occurrences. You just keep it updated each time the event happens, and it will do the math for you to figure out the frequency, and even give you a notification when it predicts the event is likely to happen again. If you're tracking more than one thing, it will try to suss out correlations for you.

I mention because twenty five years ago or so, I needed exactly this functionality and could not find any application that would do what I needed, so I wrote a thing for myself, and since then a lot of people I've mentioned it to have wondered where they can get one like it. Mine was Mac/Palm Pilot, so not of much use to most people, especially these days.
Lo, somebody seems to have realized the need for this functionality, and brought it to the market. So I thought I'd mention.

Now, in this day and age, a lot of people, especially in the US, are concerned with security. Especially if they're tracking something to do with their health. This app is not specific to health, so nothing about it immediately reveals that it is storing health information on casual inspection; you could use some sort of other term for whatever health condition it is you are actually tracking. So, for instance, If you were tracking how often your migraines happened, you could call that "new box of cereal".

This app defaults to local-only data storage on your Android device, and the developer claims that it only collects "app activity" for analytics, and shares nothing with third parties. It outputs CSV and has an option to back up to Google Drive.

I haven't tried it myself, but it has a rating of 4.6 stars out of five on the Play Store.

Reviewers on the Play Store note that tracker apps that are specific to the kind of event – such as health- specific loggers – often have needless complexity, and often some weird ideas about graphic design. They praise this app for its clean, elegant look and simple, effective functionality.

In addition to its obvious applicability to episodic health conditions, it strikes me as potentially extremely useful in one of the trickier parts of prepping: figuring out one's burn rate of resources. I think I might trial it to help me figure out how often I should expect to have to buy a fresh bale of toilet paper and how long the big bottle of ibuprofen will last me.