Supported Networks
You can use Post Planner to schedule posts to the top 8 social networks:
Facebook: pages and groups (that you manage)
Instagram: business accounts (that are linked to your FB pages)
Google Business Profile: any account
LinkedIn: profiles and pages
Pinterest: any account
Twitter: any account
TikTok: personal accounts
YouTube: channels
You can connect these networks in Settings > Social Networks.
Facebook personal profiles?
Reminder about the difference between personal profiles and pages on FB:
Facebook profile: has friends who "friend" the profile
Facebook page: has fans who "like" the page
Unfortunately, you cannot use apps like Post Planner to automatically schedule and publish posts to your personal Facebook profile, like you can to your pages and groups.
Facebook discontinued the ability for 3rd party apps to schedule content to a personal Facebook profile in August 2018.