PostOnce vs Buffer: Which Social Media Scheduler Is Better Value in 2026?

If you're looking for a social media scheduler, chances are you've come across Buffer. It's been around for years and it's a solid tool. But is it still the best value for your money in 2026?

We've put PostOnce and Buffer side by side so you can make an informed decision. No fluff — just an honest look at what each tool offers and what it'll cost you.

Pricing: per-channel vs flat-rate

This is where the biggest difference lies.

Buffer charges per channel. Their Essentials plan starts at $5–6 per month per social channel. That sounds cheap until you connect a few accounts. If you're posting to Instagram, TikTok, YouTube, Facebook, LinkedIn, and Pinterest, you're looking at $30–36 per month just for their basic plan.

PostOnce takes a different approach. The Solo plan gives you 10 social accounts for €12 per month (early bird pricing). That's one flat fee, no matter how many platforms you connect.

Platform support

PostOnce supports 8 platforms out of the box: Instagram, TikTok, YouTube, Facebook, Pinterest, LinkedIn, Bluesky, and X (Twitter).

Buffer supports a similar set of platforms, including Bluesky. However, PostOnce's flat-rate pricing means you get all 8 platforms without per-channel costs adding up.

Features compared

Auto media optimisation

One thing that sets PostOnce apart is automatic media optimisation. When you upload a video or image, PostOnce automatically resizes and reformats it for each platform at publish time. Instagram gets a square crop, YouTube gets 1080p, TikTok gets vertical — all handled for you.

Buffer doesn't do this. You'll need to resize and format your media yourself before uploading, or use a separate tool.

Recurring posts

If you've got evergreen content that you want to reshare regularly — say, a popular Reel every Tuesday and Friday — PostOnce has built-in recurring posts. Pick your days, set the time, and it'll keep posting automatically until you tell it to stop.

Buffer doesn't currently offer recurring/looping posts in their standard plans.

Who's Buffer better for?

Buffer does have some features PostOnce doesn't. Their AI assistant can help write captions, and they have a landing page builder (Start Page) that's handy if you need a quick link-in-bio solution.

If you're only posting to one or two channels, Buffer's per-channel pricing can work out cheaper too. Looking at other Buffer alternatives? See our full Buffer alternatives guide.

Who's PostOnce better for?

If you're a creator or small business posting to 3 or more platforms, PostOnce almost certainly saves you money. The flat-rate pricing means you're not punished for being on more platforms — which is the whole point of a scheduler.

The auto media optimisation alone can save you 20–30 minutes per post if you're currently resizing videos manually. PostOnce also supports Bluesky scheduling with the same one-upload-everywhere workflow.

For a complete overview of all scheduling tools, see our best social media schedulers guide.