Simplex is the only private chat, all others are fake. 

nostr:nevent1qqs8lv476ggexl5mtuvhwyar5ejdn0msaruscd342zr45n559cjg9lcpzpmhxue69uhkummnw3ezumt0d5hsygqpmhhz3xc696ggwn9rg2985s28vjnv45dtl25ctsspu74d59kn3spsgqqqqqqswfudnx 

 Are you sure. Thats what allllllll the devs here said about telegram and now look at them hahahahaha i believe not even simplex is private