At Evinex we use Sprout Social to schedule our posts and check the performance. What we like about Sprout Social is that they define ROI and give us comprehensive analytics reports. For example, knowing which hashtag works is difficult without analytics tools. Sprout Social shows what the most used hashtags you used are and what the most engaged hashtags are. You can see the gap of your hashtag strategy and easily put it into practice. I find this feature very handy.