The Instagram scheduler that plans, writes and posts for your clients.

How scheduling works through the official Instagram API

Instagram lets approved apps publish directly to business and creator accounts through its content publishing API. That means the post goes live on its own at the scheduled time. There is no push notification to open the app and no phone to hold. Personal accounts cannot be auto-posted by any tool, which is why some schedulers fall back to reminders.

You can connect an account two ways. Instagram login needs only the Instagram professional account. Facebook login works through the Facebook Page the Instagram account is linked to, so that route needs a Page. Both use the same official API and publish the same formats. SocialScheduler never asks for a password and never automates a browser.

What an agency workflow looks like

Each client has a brief: voice, offers, topics to avoid, links. On Sunday the AI plans the client's week across every network they use and writes each Instagram caption in the client's voice. It designs the images and carousels and makes the Reels.

Then someone says yes. Your team can approve in the app, or the client gets an email link to the week and approves, comments or asks for a change without a login. Clients you trust can run on autopilot. On Monday each client gets a report under your agency's name.

• Sunday: the week is planned and drafted
• Review: your team or the client approves from a link
• During the week: posts go out at each client's best hours
• Monday: a report under your agency's name

Reels and carousels

Reels are vertical short videos. The AI writes the script, adds captions on screen and a voiceover, and posts the result as a Reel. Instagram accepts Reels up to 3 minutes in the app, and anything over 3 minutes is not recommended to people who don't already follow the account, so short is the safer default.

Carousels are the saves-and-shares format. Instagram raised the in-app limit to 20 slides in August 2024, but the publishing API still allows 10, so every scheduling tool that auto-posts works within 10. SocialScheduler designs carousels of 2 to 10 slides in the client's colors and fonts, and you can also build one yourself in the composer.

The best time to post on Instagram

Large studies agree on the shape, not the exact hour. Sprout Social's March 2026 report (nearly 2 billion engagements, local time) puts the peaks on Tuesday and Wednesday afternoons. Buffer's September 2026 study of 9.6 million posts names Thursday 9 a.m., Wednesday noon and Wednesday 6 p.m. as the top slots. Both find weekends weakest.

Averages are a starting point. A bakery's followers and a B2B consultant's followers are online at different hours. SocialScheduler looks at when each client's audience is online and at how past posts did, and schedules each post for that client's best hour. You can move any post.

Captions and hashtags in 2026

An Instagram caption can run to 2,200 characters, but only the first line or two show before "more". The AI puts the hook there and keeps the rest readable. Since December 2025 Instagram caps every post and Reel at 5 hashtags and says a few specific tags beat many generic ones. Hashtags help search more than reach, so they go at the end of the caption.

Is there a free Instagram scheduler?

Yes. Instagram and Meta Business Suite can schedule posts for one account, which is fine for a single brand. SocialScheduler's free plan covers one client with up to 3 connected accounts and 20 AI credits a month, and publishing never costs credits. A planned week costs 10 credits. When you add clients, Business is $49 a month for 5 clients and Agency is $149 a month for 15, with 20% off yearly.