The first image used is from a video created by the team at TruScibe.com for a TEDx conference and was not created with Sparkol's app. There didn't seem to be a credit for using the image.
Sparkol's app is great for DIY scribe videos. The end result is an animation rather than an actual hand-drawn video, which I think loses a lot of what makes this type of video interesting and authentic. But it's a he'll of a lot cheaper than having professional creatives design the right images for your message.
@EricOakland Eric, you're right. While it may not be live video of a hand drawing like the one done by TrueScribe, you can still make it a little more authentic by creating and uploading your own drawings if you prefer. Definitely the more affordable option.