Postcron is super simple to use, and has fully Instagram support: I can schedule Stories, with questions, sliders, polls, locations, mentions, hashtags, etc.
Also I can design my own images or videos for free to publish on Instagram with Artstudio.
I tried the Chrome extension and seems to be un updated, Twitter login does not work, and there are many new features that was not implemented yet. Also the mobile version, is not the best
If you want to schedule and manage your social networks, Postcron will be a great option. And if you want to use Instagram, it will be the best, with the new features to post Stories with reach content, you will love it.
Saving time scheduling and designing post for social media