Whether people would be unwilling to listen content on their mobilephones?

I created a app "PlayText" on Android which lets you play content from websites as audio..(Articles on sites would be played as audio)

It has been one month since I launched it and the response has been lukewarm..

Whether it's good to put time and effort in developing this app further for all sites as it seems people are not interested in listening to the same content they browse..

In the era of texting whether this is really worthwhile?