Preflight vs PostOnce

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

Preflight compared with PostOnce
Detail	Preflight	PostOnce
What it does	Social media scheduler that checks every post against each network's rules before publishing to twelve networks	Write once, publish to eight social platforms from one workspace
Stage	Not given	Startup
Founded	Not given	2025
Based in	CZ	IE
Pricing model	Freemium	Paid
Pricing	Free: $0, includes 3 channels, 20 publishes a month, 3 GB media sent, 1 workspace, 1 seat, files up to 200 MB, figures kept 30 days. Starter: $13/month ($130/year), 8 channels, 150 publishes a month, 25 GB media, unlimited workspaces, 1 seat, 1 GB files, 90 days figures. Pro: $24/month ($240/year),	Solo: €15/month or €144/year (€12/month billed yearly). Pro: €30/month or €300/year (€25/month billed yearly). No per-channel fees.
Key features	Per-platform rule checks before publishing Phone preview in each network's layout Scheduling, queue and calendar Resumable large video uploads Per-platform analytics Edit or delete published posts remotely Client approval links without account REST API and webhooks MCP server for AI agents Support for twelve social networks	Schedule posts to 8 social platforms Per-platform media optimization Recurring posts Multi-workspace support REST API for developers Basic post analytics Media library with Canva, Drive, and Dropbox integration Link shortener and hashtag groups Calendar and queue for scheduling
What makes it different	Checks posts against platform rules before publishing, not after failure Client approvals through shareable links with no login required Publish to twelve networks from one caption AI agents can publish through MCP server and REST API Phone preview shows how each post looks on each network	Flat euro pricing with no per-channel fees Supports Bluesky and Threads in the same plan as other networks Clear failure status when a post fails to publish No per-channel fees, unlike Buffer or Later Built for individual operators and small teams, not enterprise
Community votes	0	0
DR (Domain Rating by Ahrefs)	23 −1 (down) since last check	28 no change since last check
Trust Flow (Majestic)	6	5
Citation Flow (Majestic)	24	25
Referring domains (Majestic)	18	25

6 details filled in for both companies.

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