Jetpack is the fastest way to manage and copy hashtags for Instagram. It allows Instagrammers to copy a perfectly formatted set of hashtags to their clipboard with one tap instead of fiddling with iOS' clumsy tap-hold-select-drag-copy gestures. Jetpack aims to replace the scrappy Notes nearly every Instagrammer today uses to manage their hashtags.
TAG by TripScout is a tool to discover the best travel hashtags for wherever you're vacationing.
Hashtag Hound is an app that finds relevant hashtags and feature accounts based on location, date, category and language.