We are currently using v100.2.1 and want to add clustering to our native iOS mobile map.
We stumbled across this in GitHub but it's apparently out-dated -
Hi there.
There is no clustering capability in the Runtime yet.
We have discussed Clustering and it's on a list of future enhancements, but not scheduled for any release yet (I can pretty confidently say it won't be included in 2019).
And unfortunately I haven't had time to update that repo to Runtime 100. I've had a couple of requests, but it's quite a bit of reworking to get it done and I just haven't had the time yet. I could help point you in the right direction if you wanted to take it on - I've had some thoughts about how it should be updated.
Cheers,
Nick