No-ads version of the app is included into the Gold Deal offer.
The Gold Deal is a one-time purchase(!) which also includes:
- 3 puzzle packs (Animals in the Wild, Paradise Dream, So Magical Sky)
- Ability to make puzzles from your own photos
Please note that the Gold Deal is not a subscription, it is an offer.
You won't have to renew it every time or pay again (as long as you use the same Apple ID).