Also saves you from the "How do I know you won't run off with the money?" and "What happens if Kik goes out of business?" questions. The value of a blockchain is that your digital tokens exist independently of the sponsoring organization, so the sponsoring organization cannot just alter or shutdown their database to make your funds go poof.
Granted, if Kik went bust tomorrow those tokens would most likely have no value, since their use is tied to Kik's messenger app. But in theory you would still own the tokens and could transfer them to anyone who would accept them.
That's only true in the case where the underlying cyptocurrency is actually accepted outside the platform. In theory, if your app is transacting money, it keeps the equivalent cash in an insured bank account which is exactly how PayPal and similar work. If it's not widely accepted, it's basically the same as in-game tokens/currency. Speaking of in-game tokens, people have used them for the same purpose of cryptocurrency e.g. capital flight and money laundering.