I could do this in PowerPoint – Grafio Lite 3 - Diagrams & Ideas Review

This program is useful for drawing basic shapes. The bad news is that these shapes are hard to edit, the rotation feature takes 30 seconds of dragging and tapping to word. I'd pay $10 for an app that I can create diagrams in, not just draw neat circles.
Review by MDD45 on Grafio Lite 3 - Diagrams & Ideas.