Wonderful! Better than the original Spirograph.
Received Spirograph as a birthday present for my son, but he got frustrated immediately because it was too hard to keep the outer ring in place, the pens would bleed or run out of ink, it was too hard to control the inner gears and keep them interlocked with the teeth of the inner ring, etc. About to give it away to Goodwill but figured I’d try an app replacement first. Glad I did! This is better than perfect! Lots of options for gear size and colors, pen thickness, paper color, and more. Really couldn’t have asked for anything better. And for free?! Paid for the full version ($1.99), but the app developer deserves at least $20 (what the manual version costs). I hope the 1-star reviewers try it again with the latest iOS and give it the 5-star rating it clearly merits.