The difference between Hush and Tinder is the same difference as between hearing someone laugh and seeing a photo of them not laughing.
The Tinder model, in one sentence
The deck of photos shows up first. You swipe based on appearance, then on bio, then on a one-line opener. The conversation, if it happens, is downstream of that initial decision.
The Hush model, in one sentence
You pick how you feel. You meet someone whose feeling meets yours. The first thing you hear is their voice. There is no decision to undo, no swipe to repent.
Which to pick
Tinder is honest about what it is: a fast way to filter people by their appearance and arrive at a date. Hush is honest about what it is too: a slow way to meet people without that filter. If you know which one you actually want, the choice is easy. Most people use one of them while wishing they had the other.