Instagram: how to post multiple accounts

Hey guys.

So I think that Instagram might be an excellent source of traffic.

And I am planning to launch 100+ accounts on it in different niches.
I already got Best Insta Bot and I can use it to generate followers.

But I still can't get the idea, how people manage multiple accounts.
I know that Instagram API does not allow to post pictures, so you have to use their native app to post.
Meanwhile it seems to me utterly ineffective to manually logout-login each and every account on your device and post it all manually.
Are there any workarounds for this issue?

Use igerslike mate 5 slots + mass upload

this guy has 100+ accounts... why would he pay $3 per account plus $40 monthly with Igerslike... Just get a desktop bot bro, FollowLiker is public and it mass uploads pics

Thank you for the links.
I was about to start working on my own bot which supports uploading functionality, but apparently I can use FollowLiker.
Got unlimited version, gonna play around with it.

Follow Liker approved. Nice shit.