Social API comparison

Postmixr vs Zernio (formerly Late)

Zernio caps one account per platform per profile. Postmixr allows duplicate platforms in one workspace.

Postmixr vs Zernio: pricing screenshots and platform comparison
Side-by-side comparison: Postmixr vs Zernio (2026-06)

Postmixr vs Zernio at a glance

Zernio

Zernio: Social APIs for developers and AI agents. Two Instagrams means two billed profiles on many tiers.

Best for: Best if you need a posting API inside your own product and your team will build the UI.

Postmixr

Postmixr is a team scheduling app with a visual calendar, approvals, bulk CSV, REST API, and MCP for AI tools. Free for up to 3 connected accounts. Team is $29/month for 10 accounts. Business is $99/month with unlimited accounts.

Best for: Best if you want flat workspace pricing, a calendar the whole team can use, and optional API or MCP without a developer-only workflow.

The main difference

Unlimited same-platform accounts. Connect every client Instagram without doubling API profile fees.

Pricing checked . View Zernio official pricing

Product overview

postmixr

Recommended

Postmixr

Free online social media scheduler for creators and teams: calendar, approvals, bulk CSV, and MCP.

  • Instagram
  • TikTok
  • YouTube
  • X (Twitter)
  • Facebook
  • Threads
  • Pinterest
  • LinkedIn
Zernio logo

Compared tool

Zernio

Social APIs for developers and AI agents

  • Instagram
  • TikTok
  • YouTube
  • X (Twitter)
  • Facebook
  • Threads
  • Pinterest
  • LinkedIn

Where teams feel the difference

Zernio limitation

One account per platform per profile

Two Instagrams means two billed profiles on many tiers.

With Postmixr

Unlimited same-platform accounts

Connect every client Instagram without doubling API profile fees.

Cost at scale

Zernio uses per account pricing. Postmixr uses flat workspace tiers. Compare typical scenarios below (list prices, 2026-06).

Cost comparison between Zernio and Postmixr at different account scales
ScenarioZernioPostmixrYou save
10 accounts$48/mo$29/mo$19/mo
50 accounts$168/mo$99/mo$69/mo

Feature comparison

Honest checklist. Partial means limited or beta on that side.

Features compared: Postmixr vs Zernio
FeaturePostmixrZernio
Free tierYesPartial
REST APIPostmixr API requires a paid planYesYes
MCP for AI assistantsYesNo
Visual calendar UIYesPartial

Platform support

Postmixr supports publishing on 8 networks in this table today. Zernio lists 8 in their product materials. "Partial" means connect-only or beta.

Social platforms supported by Postmixr and Zernio
PlatformPostmixrZernio
FacebookYesYes
InstagramYesYes
LinkedInYesYes
PinterestYesYes
ThreadsYesYes
TikTokYesYes
X (Twitter)YesYes
YouTubeYesYes

Pricing comparison

List prices from official pages, verified .

Postmixr plans

  • Free$0/mo

    Solo creators shipping their first calendar.

  • Team$29/mo

    Creators and agencies posting every week.

  • Business$99/mo

    Brands managing content at scale.

Zernio plans

  • Free$0

    2 accounts

    2 accounts

  • 10 accounts$48/mo

    10 accounts

    10 accounts

  • 50 accounts$168/mo

    50 accounts

    50 accounts

Source: Zernio website

Zernio pricing page

Screenshot from the official pricing page (2026-06). Compare with the plan cards above.

Zernio pricing page screenshot for comparison with Postmixr
Captured for reference; confirm current prices on Zernio's site before purchasing.

Key differences

Choose Postmixr if you need:

  • You want flat team pricing with approvals and bulk CSV
  • You schedule daily from one calendar and use MCP in Cursor or Claude

Choose Zernio if you need:

  • You need Zernio's strongest native features for your primary use case
  • Your workflow already depends on Zernio's ecosystem and integrations

Frequently asked questions

How does Postmixr compare to Zernio?
Unlimited same-platform accounts. Connect every client Instagram without doubling API profile fees. Best if you want flat workspace pricing, a calendar the whole team can use, and optional API or MCP without a developer-only workflow.
How much does Zernio cost compared to Postmixr?
See the pricing table below (verified 2026-06-01 from Zernio's official site). Postmixr Team is $29/month for up to ten accounts.

Sources and methodology

Prices and plan limits come from official vendor pages only. Feature rows are based on public documentation and product positioning. We update when vendors ship major changes.

Internal review notes: Confirm Zernio branding vs getlate.dev pricing

More comparisons

Building with AI? See Postmixr MCP setup for REST and Model Context Protocol access.

Ready to try Postmixr?

Start free with up to three connected accounts. Upgrade when your team needs approvals, bulk CSV, or unlimited accounts.