Pippen san,
Thank you for your interest in "A Master of Go"!
Pippen wrote:
1. Does Master of Go give you several choices (with % and playouts and colors for good (green) and not so good (red)) of moves like Lizzie?
Study mode on the app is quite similar to Lizzie. I implemented Lizzie-like UI by permission of Lizzie author.
Pippen wrote:
2. Does Master of Go give u the chance to let AI play against itself, especially after loading a game to play for example AI vs. AI from move 15 on?
You can "paste" an SGF string for game and can let AIs continue to play.
Pippen wrote:
3. Is the AI stronger than Leela 20x256 (which I use right now)?
A14 iPad Air runs Leela Zero 40b weight at more than 140 nps, so maybe it runs 20b at more than 280 nps.
It runs KataGo 40b weight, which is optional item, at more than 120 nps.
But if your iPad/iPhone is older than A14 processor, it runs them at less than 70 nps.
If your iPad/iPhone is older than A12 processor, it runs them quite slowly.
Pippen wrote:
4. Are there any main differences between Lizzie/LZ (which I use now) and Master of Go?
The app was strongly inspired by Lizzie.
You may gat some comments from participants of this thread.
Pippen wrote:
5. The payment is 13 $, is it a one time payment and such one that you get all features at once?
It is one time payment but KataGo engine is optional.
You need $9.99 to unlock KataGo engine. It is also one time payment.
If you are interested in scoring/estimating score, you need to buy virtual coins.
I hope that these information will help you.