And in france it was many times in the news about a group of friends who were arrested for using Signal.
Citation needed. Your third- or fourth-hand account is so vague that I wonder if the devil has been lost along with the details.
It piqued my curiosity. The only references I could find were the Telegram CEO being arrested earlier this year (widely reported on) and a group arrested in 2023 for associating with a Kurdish militant faction (YPG). That incident had some misdirected media attention towards the encryption tools used.
Please forgive if this is a stupid question, but what is the difference between the play store version and this? Assuming it is not altered by a bad actor.