Yrydys:
The game is "kind of" free (if you want to play unranked). But at one point you need Coins to play a Face-a-Face, and with time you know that if you don't buy better Equipment you will not Rank up.
COINS = GAMEPLAY TIME (Only good for Face-a-Face and some Rent)
CREDITS = BYING POWER FOR EVERYTHING
So, you are not missing anything. Coins a Restricted, Credits are Not.
Kind of , yes , but coins are needed to upgrade apparel , which some would say is a valuable asset. Coins also used is H2h coin room matches which for turf wars may be Importent to a club who wants to be competitive in clashes, as super passes can be won.
Credits on the other hand , like you say are used for buying new equipment , and balls , passes , and other things in pro shop. On a mobile device you can watch 75 videos per day , to earn 150 free credits. Or you can buy credits with real money. Whilst 150 credits per day doesn’t sound much , if you get into the habit of watching them whilst you are doing something else , each day they soon mount up. Also surveys and offers are available if you are lucky, these also earn free credits.
Finally , if you are good enough you can earn credits by winning certain WGT tournaments