What's a good replacement for the reminders app?

Question

Hello everyone, thanks for your input.
I've been on the phone with Apple support about this for some time and it seems that this was a core change made in Yosemite and since I "upgraded" to icloud drive, I can't just back to Mavericks and still having things sync via icloud.
The reminders app no longer supports grouping of completed tasks by the day they were completed, and instead just shows a big list of every reminder ever completed in that list. I have to note what proofs and designs  I make on a time sheet at the end of each pay period and to do that I need to know what task was completed what day. Reminders was a very slick way to keep track of both the things that still need doing as well as see what was completed when. Now that I've installed Yosemite the only way to see completed reminders organized by day is to log into the icloud web interface on an OSX or windows computer and I'm concerned that that's not going to be an option for much longer since iOS 8 and Yosemite have both removed it.   It's a small change but its absolutely core to what I do. It's one of those little workflow things that seems inconsequential but has the potential to accumulate and just totally screw up your my Sundays and delay my pay checks if not done right.  All the solutions I'm coming up with, from tally them in an excel sheet to noting them in the calendar app instead of reminders, to just writing them down on postits are all kind of a clumsy, error-prone steps backward to the point that rolling back to Mavericks is looking like the best option (a painful option but at least it's just a 1-time pain)
Before I start the mess of going in and rolling back to Mavericks and all that that entails I just wanted to see what other options are out there? Surely there's a 3'rd party app that does what reminders used to do.
Ideally I just want it to do 3 things
     1. let me add simple reminders from OSX, ipad or iphone
     2. sync them to all the devices.
     3. let me organize the completed reminders by what day they were completed.
Thanks!

Answer 1

Wunderlist
I would love to see reminders with better snchronization features... Not just between ios and OSX but also between ical-google cal etc...
A good alternative right now is Wunderlist from the Mac app store.
Pretty much does the same thing..
It has Notification and widget snchronization with Yosemite.
It also syncs between Ical Google Calendar, android and ios....
Reminders needs a lot of work in my opinion.
Wunderlist does what Reminders should be doing.
It definitely addresses 1, 2
3 is also done... You will have to check it out to see if it does it the way you want....
If its for bussiness I would suggest you use the pro paid version for added functionality.
Free version is however great also.