I tried Buffer. It says you can schedule posts to be done at later dates and/or times. I did the trial to find out it does not. It only posts immediately when you hit submit after selecting multiple days and times you desire it to be posted again. There were a lot of other things Buffer was supposed to do. I contacted customer service that said all those claims on the website were false.
Following, I contacted Social Pilot. I was hesitant after the Buffer experience. However, when I was supposed to meet online with "Jay" he said my end was not on audio or video. Here I am watching myself in video on the screen and hear me talking to myself. I look on where I should see him, and it shows his audio and video button have a slash through it. As you know that means it is off. He cannot work a computer or something everyone knows like skype. I am sure his app must be a piece of crap as it takes more skill to develop an app than talk on skype. In the end, I am still searching for one and recommend staying away from Social Pilot as well.