If I HAD to use one, which one would be better? While Whatsapp is owned by Facebook, they have end to end encryption for the messages, while the metadata is not. However, on Telegram, nothing is end to end encrypted unless you use a secret chat which most regular people are most likely not going to use. I have a feeling Whatsapp would be better but I wanted to hear your thoughts.
In terms of Tech and Ops, definitely Telegram.
In terms of prevalence (user and market share), WhatsApp.
I find for these kinds of apps user prevalence and market share are a lot less relevant. You’re generally going to use it to talk to people you know personally, so it’s really a question of whether your friends are willing to use a particular app or not.