I like Hiki. Met some interesting people on there and it's nice to have a community of autistic folks. Personally I use the community aspect of the app more than the matching swiping part.
The developers listen to the community and add things we actually want and actively work on dealing with problematic users. Like any social apps sites, arseholes appear. It has actually surprised me how many bigoted autistic people there are, mostly male. So that's been enlightening. Thankfully the block button exists.
On the whole I like and have made friends.