Australian Patience is Klondike's harder cousin. Seven tableau piles of four face-up cards each, a stock to draw from one card at a time, and four foundations to build up in suit from ace to king — but the tableau builds down in suit rather than alternating colours, and only single cards move.
Those two restrictions change everything. There's no shuffling a black queen onto a red king to buy time, and no moving a run as a unit, so every card has exactly one place it can go.
Everything is dealt face up, the tableau builds down in suit rather than alternating colours, only one card moves at a time, and empty columns accept any card. There's also no redeal of the stock.
Yes, considerably — building in suit and moving single cards removes most of the flexibility Klondike gives you.
Yes — tap a card then its destination. Nothing to install.