Quick answer: PostNitro has a free plan and paid tiers starting at $15 a month. The detail that changes the buying decision is that Free and Starter include no scheduling and connect no social accounts, and the free output is watermarked. Scheduling only starts on the Creator tier at roughly $25–30 a month.

The ladder, plan by plan

  • Free ($0): no card, 5 downloads a month, up to 5 slides per carousel, 1 brand kit, no scheduling, watermarked output.
  • Starter ($15/month): 30 downloads, up to 8 slides per carousel, 2 brand kits, still no scheduling.
  • Creator (about $25–30/month): the first tier that connects social accounts and adds scheduling and publishing.
  • Team (about $42/month): multiple brands and collaborators for agencies.

A programmatic API for agents and developers is a separate add-on rather than part of the base ladder.

Where the limits bite

  1. Five downloads is a test budget. A single eight-slide carousel already exceeds the free slide cap, so a real calendar cannot live on Free.
  2. Starter still cannot publish. It raises the download and slide limits but connects zero accounts, so you design and then export manually.
  3. The watermark is removed only on paid plans. Client-facing work cannot ship from the free tier.
  4. Brand kits are capped. Free holds one; Starter two. Multi-brand teams need Team.

How the value maps to use cases

  • Solo testing: Free is enough to learn the editor and judge the output quality.
  • Regular designer who exports manually: Starter covers up to eight slides and more downloads, but only if you do not need auto-publishing.
  • Publishing on a schedule: you must reach Creator, which is the real cost of the hands-off workflow.
  • Agency with several clients: Team is the first tier that fits the brand count.

The honest comparison with a one-prompt editor

If the goal is clean, editable slides rather than a publishing pipeline, an editor that generates from a brief and exports without a watermark avoids paying for scheduling you may not use. Neatico's free tier exports social assets without a watermark and keeps every slide editable, though it does not schedule posts either. The PostNitro alternatives hub groups the options by the job.

What to check before you subscribe

  1. Count the carousels you publish a month and compare against the download cap.
  2. Decide whether you need native scheduling; if not, do not pay for Creator.
  3. Confirm the slide count you need, since Free stops at five.
  4. Check whether the watermark is acceptable for the intended channel.

The bottom line

PostNitro's headline is "free to start," but the free plan is a capped, watermarked trial, and the headline $15 Starter still cannot publish. Treat Creator, around $25–30 a month, as the true cost of the full design-and-schedule workflow, and compare it against editors that charge only for the design and export clean files.