The app is called 30 Hands.
It's essentially a simplified PowerPoint. To use it, you'll upload photos from your camera roll or take them directly in the app. When you're done, it'll look like this.
(Images from the 30Hands website)
Then, click on each photo. You can draw on the photos, or you can even draw your own slide. (I had students make illustrations, then upload those.) Nexg, students record their voices onto each slide. Rather than typing, your students can speak about the slide. When you're done, you can play it or export the video. We have limited tech in my school, so his was the first time my first graders used it for a presentation, and they LOVED it!
Do you have any other kid-friendly presentation apps you'd suggest?
Have a great weekend!