Single words are often used when they don't really have much to do with the underlying product (Apple, Amazon, Mint, etc.) because it can be "branded" for that market.
But with Wise, for example there is already a MoneyWise, BudgetWise, etc., so "Wise" by itself may have issues with those other existing businesses.
But with Wise, for example there is already a MoneyWise, BudgetWise, etc., so "Wise" by itself may have issues with those other existing businesses.