We've featured a bunch of apps and games from Ajani InfoTech since BlackBerry 10 hit the market and as a special treat and as a way for them to say thanks they have made the paid version of Vibrate On Call Connect 10 free - forever.
Now you may be thinking "why do I need this" and the answer is you don't, but it does have some big benefits. There's constantly research being done as to whether holding a cell phone up to your ear will have any long term effect on the brain, so with the app installed you can make the call, place the device down and wait for it to vibrate so you know the other person has answered. It's not rocket science but I like it.
In addition, you can alter the LED color, the theme from light to dark and it even has a pretty neat Active Frame which shows your battery percentage.
Available for all BlackBerry 10 devices there isn't a reason to give this one a go. It's headless too so you don't need the Active Frame open if you don't want to.