if i buy spread coins, will they automatically be swapped into helium coin in august ? or what is the deal ? i don't get it...
Yes. When the snapshot will be taken, ypu will receive the same amount of HLM as SPR you have in your wallet or in Bittrex if they participate.
You will keep your SPR, HLM will be additional coin for you.
More info:
https://bitcointalk.org/index.php?topic=1809278.0