The best alternatives to Pointnuts are Covfefe, Chirr App, and Little Card Editor. If these 3 options don't work for you, we've listed a few more alternatives below.
Introducing Covfefe. Edit any of your old tweets by clicking Edit. 🚨 Note: You will lose any favorites and retweets if you replace it with your edit! 🚨 Covfefe also delays your tweets for 15 seconds allowing you to undo and edit them before they're seen. To get started, connect your Twitter account by clicking Covfefe in your toolbar.