Is there an app that can track any habit, even a weird one?

A general routine tracker can log anything that repeats, because it does not need to know what the habit is. In EasyRoutine an activity is just a name, an optional photo and a color, so turning the compost, checking the tire pressure or practicing card tricks is logged the same way as a vitamin or a gym session.

Why dedicated apps do not fit odd habits

Most tracker apps are built around a category: water, workouts, sleep, medication. They ask for the things that category needs, such as glasses, sets, hours or doses, and they have no place for "descale the kettle" or "call grandma".

For many unusual habits you do not need a category at all. What you want to know is usually the same two things: did I do it, and when did I last do it. Any tracker that records a simple yes with a date and time can answer that for anything.

Examples people rarely find a tracker for

Home and garden: turning the compost, descaling the kettle, cleaning the hood filter, feeding the sourdough starter.
Things you keep forgetting when you last did: checking the tire pressure, testing the smoke alarm, flipping the mattress.
Small personal practices: a gratitude line, a daily Spanish lesson, five minutes of drawing, a cold shower.
Hobbies: juggling, chess puzzles, piano scales, a coin collection you sort on Sundays.
Things you want to do less: logging each time you order takeaway or check social media at night shows the real pattern.

If you can name it and you do it more than once, it can be tracked.

How to make an unusual habit trackable

Name the action, not the goal. "Turn compost" rather than "be greener". You can only log something you actually did.
Decide what counts as done. One page? Ten minutes? Write it in the name if it helps: "Spanish, 1 lesson".
Add a note when the detail matters. If you want to remember which chess opening you studied or how much starter you discarded, a short note on the log keeps it.
Group it with similar things. Odd jobs around the house fit in a Home routine; hobbies can share a Practice routine.

How EasyRoutine handles any habit

EasyRoutine does not have categories or templates you have to fit into. An activity is:

A name, up to 80 characters, whatever you like.
A photo, optional. Take one of the actual thing: your compost bin, the kettle, the chessboard. If you add a photo and leave the name empty, the app names the activity from the picture.
A color, from 16 preset swatches or any shade you pick on the color field, so it stands out on the calendar.

You log it with a tap on the day, or by taking a photo with the AI photo scan, which matches the picture to one of your activities that has a photo. The scan does not recognize objects in general; it picks between your own activities. All of this is free, with no limit on routines or activities.

EasyRoutine activity sheet for a Compost activity with a photo of a compost bin, a name field and a color choice — Any name, any photo, any color

Seeing it on the calendar

Once logged, an unusual habit sits on the calendar like any other. The week view shows which days you did it; the month view shows the rhythm over weeks. For things you do rarely, like the smoke alarm, the calendar answers "when did I last...?" by scrolling back to the last dot.

If the habit needs a nudge on certain days, Premium lets you schedule it on chosen weekdays or single dates with a reminder. Logging itself never needs a schedule. See scheduling.

EasyRoutine week view of an Odd jobs routine with logs for compost, Spanish, gratitude and tire pressure — Unusual habits, the same calendar

What it will not do

EasyRoutine records that and when something was done, plus an optional note and flag. It does not count quantities, show charts or measure anything. If your habit lives on numbers, like distances, weights or money, a specialized app or a spreadsheet will serve you better for that part.