Thanks for taking a look. I've just added a 24 hour option (enabled by default depending in your locale, otherwise can be toggled by tapping the settings cog on the top right).

Sorry about that, if you give it a try now it should hopefully be working. Had to make a few tweaks for older browser versions.

Give it a try now, made some changes that I think should sort out the issues you were seeing

Yeah, definitely some improvement I can make here. I'll add proper 24 hour support and pull it from the locale + make it user selectable. Thanks for the feedback!

It'll probably need some tweaks on my side to get it working with iOS 14, but I'll see what I can do. Leave it with me!

Thanks! Sure, I'll add it to my feature list

That's a good shout! You're right, it's currently working on a rough average of 15 mins to fall asleep, so I'll make that clear and look at making it a setting so different folks can adjust as necessary.

It's not in the app store (yet!), but you can add it to your home screen next to your Clock/Alarm, just like an App Store app.

Open the site in Safari on your iPhone (sleepy.im), then hit your share button on Safari's menu (aka the square with an upwards arrow). You should then have an option to "Add to Home Screen". You can make the name shorter if you like, then tap to Add the icon to your home screen and move it around like any other app.

Hope that helps!

Hey folks!

I put together this minimal sleep calculator app after the one I was using (sleepyti.me) was bought out and turned into a giant ad.

If you've never used a sleep (cycle) calculator before, the idea is that sleep is cyclical, with the body going through lighter and deeper phases in roughly 90 minute cycles. This app suggests times to go to bed or to set your alarm, aiming to wake you up in a lighter sleep phase.

It's not quite an exact science, but I find it helpful (as someone who is more of a night owl than a morning person).

Appreciate any feedback and hopefully some of you find it useful!

Update (22/03): Thanks for all the feedback all! As per requests, the site now has a 24 hour mode for those of you who prefer it (toggle between 12/24 in the settings menu, cog icon on the top right). Also resolved some issues a few people were seeing on older browsers.