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PostOnce vs Zup

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

PostOnce compared with Zup
DetailPostOnce logo PostOnce Zup
What it doesAuto post your videos everywhere through official platform APIs Turn your photos into captions in your voice for social media
StageNot given Startup
Founded2023 2026
Based inCA Not given
Pricing modelFree trial Free
PricingCreator: $261/year ($0.72/day) or $29/month; Pro: $621/year ($1.70/day) or $2.27/month; Agency: $1791/year ($4.91/day) or $6.54/month. All plans include 7-day free trial, no credit card required. Free to download and use. Optional one-time tips support development.
Key features
  • Automatic crossposting to 9 platforms
  • Post scheduling
  • Existing content distribution
  • Image repurposing
  • Developer API
  • 17+ integrations
  • Workflow creation and management
  • Human support
  • AI-generated captions in six tones
  • Photo editing with cropping and filters
  • Platform-specific post previews
  • Support for 5 social platforms
  • Post scheduling for X and LinkedIn
  • Editable captions before sharing
  • User permission required to publish
  • Schedule posts 10 minutes to 30 days ahead
What makes it different
  • Post once and publish automatically to all connected platforms
  • No reach loss compared to manual posting
  • Founder-led support with real people
  • Post using official platform APIs only
  • Maintain your natural posting workflow
  • Write in your own voice with adjustable tones and editable AI captions
  • Preview posts on each platform before sharing
  • Complete photo editing within the app while keeping original safe
  • One moment shared across five platforms with tailored previews
  • Completely free with no subscriptions or paywalls
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)61 no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)104
Citation Flow (Majestic)3911
Referring domains (Majestic)6781

6 details filled in for both companies.

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