Public Speaking with Andrew Johnson is smart, very affordable way to boost your public speaking prowess and deal any level of phobia of public speaking. Check it out on the App Store. I am a bit of a fan of Scotsman Andrew Johnson, he has a suite of insomnia/relaxation apps that are pretty damn effective. (I dare you to try his Relax App!)
This is wonderful for people who struggle with public speaking because it allows people to work on shifting that negative mindset that can be mighty hard to shift. I do work with people at all levels with a real loathing for public speaking and it's great to watch them work through this phobia and make that speech. I will be prescribing this not just for people who dread speaking but for anyone who wants to really set their mind in the right place before a speech.