Ninjagram is one of the most consistent Instagram bots you will find. It's been used by thousands for several years, and had some really good updates along the way. We particularly like the scrape/gather feature as it works much faster than other bots we've tested.
Ninjagram comes packed with some fantastic features including:
The bot will automatically scrape users and/or photos based on your search term
Auto-Follow / Auto-UnFollow
Ninjagram will automatically follow other users of Instagram, based on your setting. In turn users will then follow back and engage with you - the bot can then unfollow as required.
Automatically like targeted content to increase your footprint
Automatically comment on targeted content to increase your reach