I'm almost 21 and been signing for over 11 years. I dont really have many ppl in my life that sign and am always looking for new friends that sign/to help teach! I have Glide and Marco Polo for signing.
It also has the longest record time I've found so fr at 5 mins.
Its really really great for conversating back and forth. Unlike Sc, the messages dont delete which makes them great for learning to look back on previous videos. Both are amazing for signing.
Okay so the best way to explain them (normal apps)are like a mixture between snapchat and messenger.
It has the text set up the same as messenger but when you hit the record button you dont have to hold it down so both hands are free for signing.