Why is this even called secret sms

This app is really not secure. I sent someone a very private message and their friend was using the phone. Their friend forwarded it to themselves and then decrypted it on their phone!! Then they also changed their name/number in the app preferences and replied as if they were me!!

Im really not satisfied because the app does not secure my messages which is what its meant to. Furthermore, it tells people looking at my phone which messages are worth reading. I was going to give 2 stars because it is a good idea/intent aside from this huge security flaw but according to the review below mine, this is just a rip-off of another app!

lagans54 about Secret SMS - Protect your private messages!