Identify if an iOS In-App Purchase is a consumable or non-consumable? I need a small help to know if what I propose in my iOS app is a consumable currency or not.
From the Apple Developer In-App Purchase webpage:

Consumable
Users can purchase different types of consumables, such as lives or gems in a game, to further their progress through an app. Consumable in-app purchases are used once, are depleted, and can be purchased again.

Users can buy a currency that has a name, such as &quot;bucks&quot;, for example: 100 bucks can be bought for $1.
User can receive or send this currency to another user. When desired, he can convert this virtual currency to money = for example: $1 for 95 bucks.
This currency is like a cryptocurrency and my app is not a game.
So is this currency a consumable or non-consumable? I need help with understanding to prevent my app from getting rejected.
If an item can be used once and then is not available again, it is a consumable.

If an item can be reused over and over, it's a non-consumable.

This is explained in the developer Apple's IAP overview you referenced:


  Consumable
  
  Users can purchase different types of consumables, such as lives or gems in a game, to further their progress through an app. Consumable in-app purchases are used once, are depleted, and can be purchased again.
  
  Non-Consumable
  
  Users can purchase non-consumable, premium features within an app. Non-consumables are purchased once and do not expire, such as additional filters in a photo app. Apple can host content associated with your non-consumable in-app purchases.


Based on your comments, I would say you have a Consumable IAP.  You app could be reject for other reasons, though, so this is no guarantee that it will pass App Review.