Sleep tracker apps similar to rise sleep?

Hi,
I'm seeking a less expensive alternative to rise sleep to track my sleep, sleep debt, afternoon peaks and dips, etc. I use rise sleep, been using it in trial mode. I got a free trial for a month, my problem is it's billed yearly, 69 dollars a year, especially around this time of year is a lot, all at once. There's no monthly option, this is why I'm looking for a similar equivalent. I don't have an apple watch or anything, so I'm looking for a good iPhone sleep-tracker app. I like rise because it tells me when my morning and afternoon peaks and dips approach. And it tells me how much sleep debt I have.
Thanks