Update
This service was shut down, use https://www.npmjs.com/package/google-play-scraper
Use the WhereDat API:
http://api.wheredatapp.com/search?q=term
result:
{
apps: [
{
category: "Tools",
rating: 4.409321308135986,
updated: 1431698203,
created: 1431082225,
icon_url: "https://lh4.ggpht.com/2jbUS9Hz8nWQEZKQR17xpxEnXhlW3tisxmhi-NNrMaA6TQT2RtewoHAezDXCbEPJxg=w300",
title: "Terminal Emulator for Android",
download_url: "https://play.google.com/store/apps/details?id=jackpal.androidterm",
package: "jackpal.androidterm",
ratings_count: 81873,
short_description: "Access your Android's built-in Linux command line shell. Unleash your inner geek!This is a new version of the popular "Android Terminal Emulator" applica..."
}
]}