As a little weekend project I made a simple tweet scheduler with Airtable. It allows to post tweets once daily at a time you specify. You can set the number of times you want each tweet to post, or allow to repeat indefinitely. Turn on/off at any time. Available athttps://amazingairtable.gumroad.com/l/tweets
Let me know what you think! Just doing this for fun for now, but may start to build more complex stuff if I can generate any interest.