ASK HN: Price for an inifiing slideshow remote control

Hi, I made an useless iOS app that control speakerdeck slideshow and slidshare. This seems an useless app. I wanted to play around firebase and iOS. Now, I put more than 3 weeks into this app and going to publish it. Not really sure if anyone buy/want it though. But if you want to buy, is $1.99 is a nice price for this kind of app? Thanks.