@stpaultim I have used this quite a bit. Works v v nicely. The only thing is that its compose function is not great - you can't just copy paste images in (I think) and also does not predict hashtags like other mastodon clients do (you have to type them all out, but upgrading to premium stores hashtags).
Phone apps, as @chpietsch indicated, also allow #scheduling v well - e.g. @apps @megalodon
But @bufferapp remains the best desktop solution to scheduling on #Mastodon , personally. #FediTips