Instagram requires a mobile device in order to post, auto-posting is technically not allowed. That's why you won't get it out of the "normal" white tools.
What you can do is open Instagram on a desktop computer, shrink the browser window or switch to mobile view to make it look like you're viewing from a mobile device. Refresh the browser window if it doesn't work instantly. Viola, Instagram in your browser with access to your PC file system - uploading photos / commenting is a breeze.
Next step you can automate it by either writing your own js script and running from the console, or use a chrome automation plugin to "record" and play it automatically.
I know there are some plugins on codecanyon as well, not sure if they work or not.
Good luck!