[NeillAlexander]

It has a reminder, but it's not random. You tell it how many minutes you want to spend meditating each day, and then configure a reminder time. At that time a notification appears in the tool bar if you haven't met your target. You can configure the notification message to make it something that motivates you.

You can also configure what time your day starts. If you often meditate just before bed, and don't go to bed until after midnight, you can offset the start of day. I have mine set to 2am, for example.

Last but not least, it has a simple widget that displays the length of the current chain (the number of consecutive days you have met your target), your longest ever chain, and a representation of the proportion of the target you've met today. When you miss a day, the current chain resets to zero.

All this combined works well for me. I recently broke a chain of 369 days because I was really ill. It wasn't a decision I took lightly. I'm on a run of 31 days now - less than a year to go to beat my record!

Edit: it's also free

[ypcx]

Awesome! You might consider putting a paid version up, even with the same functionality, for people who want to express gratitude for your work.