http://secushare.psyciumunsqarzsehz5xlgsi2mg4dkvntwf5bwj5kwbcbazwiuhna2ad.onion/comparison
Unfortunately, even this reproduction includes non-free binaries that cannot be reproduced, so there is still room for a backdoor or change of behavior to be placed deeper in the architecture. Swiss-made Wire App, a VC-funded company by a former Skype co-founder , is suffering from the same problem . As it stands we won't be seeing neither Signal nor Wire on F-Droid.