The game is now PAID (0.99), no ADS, no bullshit
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Working on android now.
Ha! got in under the wire!
Stunning artwork and a really interesting puzzle. I liked it much better when I realized I could tap one at a time. You might think of some way of emphasizing that for us slow learners.

Have you thought of monetizing Hints with consumable IAP? Also, maybe you could have an Unwind consumable IAP. So if you realize you have painted yourself in a corner you could "unwind" your steps back a few.
Stunning artwork. Left you a review.
-Jason