RiteTag

Ritetag is an app that enables users to find hashtag suggestions in their browsers. It works both as a browser extension for Chrome and as an app for iOS and Android.

The tool generates hashtags instantly from your text and photos on any site (Facebook, Instagram, Pinterest, Buffer, Hootsuite, and everywhere).

Ritetag offers a free 7-day trial. Then costs $49 per year, which equates to $4 a month.