PostNitro

PostNitro, from PostNitro Inc., builds carousel posts from a prompt, a description or a link and then schedules and publishes them. The vendor's own line — "From an idea to a published post in under a minute" — describes the whole arc rather than just generation, and that is a real change from the carousel generator the tool was first catalogued as.

There are four plans — Free at $0, Starter at $15 a month, Team at $50, and Creator, whose price the vendor prints two ways. Two separate meters run across them. Downloads go 5, then 30 a month, then unlimited on both Creator and Team. AI-generated slides per carousel go 5, 8, 15 and 20. The free plan carries a watermark and Starter removes it.

Of those two meters, the slide cap is the one that constrains the work rather than the volume. Eight slides is a short carousel; fifteen is a long one. If the format you have in mind runs to a dozen slides, Starter cannot produce it however many downloads you have left, and the decision jumps straight to Creator. Downloads are the easier judgement: 30 a month is roughly one a day, and anything busier than that is already in unlimited territory.

Beside the plan prices sit two further terms. Billing runs monthly or yearly — the vendor offers both and describes the annual saving as two months free, though it prints no yearly figure to check that against, so the number to commit to has to come from checkout rather than from the plans page. And a plan is not a ceiling: the documentation prices each extra unit by the month, at $3 for a workspace, a team member, a branding slot or a custom template and $1 for an AI generated image, a colour preset or an AI preset. Programmatic access through the MCP server, CLI and REST API is sold the same way, at $10 a month with 250 credits included. Three rules go with all of them: an add-on follows the primary subscription's billing cycle, changes prorate immediately, and a discount on the subscription does not carry to the add-on.

One figure does not agree with itself. The plans page prices Creator at $25 a month, on the plan card and again in its own comparison table. The vendor's documentation prices the same plan at $20. Both are official surfaces and both are current enough to be published; this page therefore reproduces both and asserts neither, because picking the lower would flatter the product and picking the higher would flatter the caution. If Creator is the plan you want, confirm what you will actually be charged at checkout before you commit.

At the top of the ladder, generated imagery is metered too: a hundred AI images a month sit alongside the twenty-slide ceiling. The trial on all three paid plans is three days, which is short enough that it is worth having the posts you want to build ready before you start it, rather than deciding what to test once the clock is running.