Free planBuffer
Schedules, publishes and analyses posts across 12 social networks from one calendar, with a free plan for three channels
Social media schedulers and creator tools for planning posts, writing scripts and collecting testimonials. Compare the networks each supports, how many channels the free plan allows, and the price per channel or seat.
Free planSchedules, publishes and analyses posts across 12 social networks from one calendar, with a free plan for three channels

Social media scheduler for 30+ networks that AI agents can drive through MCP, a CLI and an API; open source to self-host
Free planSocial media API for posting, scheduling, analytics, messages and ads across 16 networks, priced per connected account
Free planAI research, scripts, thumbnails and video editing for YouTube channels, with an MCP server for Claude and ChatGPT
Buffer schedules, publishes and analyses posts across 12 networks, including Bluesky, Mastodon, Threads and Google Business Profile. It scores 4.5 on Capterra from 1,492 reviews, 4.3 on G2 from 1,038, 4.7 on the UK App Store from 9,532 ratings, 4.1 on Google Play from 57,687 and 3.8 on Trustpilot from 126. Reviewers on several sites describe its analytics as basic.
Postiz supports more than 30 networks, including Reddit, Discord, Telegram and WordPress, and AI agents can drive it through an MCP server, a CLI and an API. It scores 4.8 on G2 from 51 reviews, 4.2 on Product Hunt from 10 and 3.6 on Trustpilot from 11, where reviewers report LinkedIn connection failures and slow support. The contracting company is in Hong Kong.
Buffer's free plan allows 10 scheduled posts per channel at a time, 100 ideas and one user, and includes Insights and the community inbox. Postiz has no free hosted plan, only a 7-day trial, but its open-source edition is free to self-host under AGPL-3.0 with no features held back. Self-hosting needs your own developer apps on each network, which can take weeks to approve.
Buffer charges per channel, while Postiz sells bundles: - Buffer Essentials: $6 a channel a month, or $5 billed yearly, for one user - Buffer Team: $12 a channel a month, or $10 billed yearly, with unlimited users and approvals - Postiz Standard: $29 a month, or $23 billed yearly, for 5 channels and no team members - Postiz Team: $39 a month, or $31 billed yearly, for 10 channels and unlimited team members - Postiz Pro: $49 a month, or $39 billed yearly, for 30 channels - Postiz Ultimate: $99 a month, or $79 billed yearly, for 100 channels
Two channels on Buffer Essentials cost $10 a month billed yearly. Ten channels on Buffer Team cost $120 a month billed monthly, against $39 on Postiz Team.
Zernio has no plan tiers: every feature is on every account. Accounts 3 to 10 cost $6 each a month, 11 to 100 cost $3 each and every account past 100 costs $1, so 10 accounts come to $48 a month and 100 to $318. It scores 4.8 on Trustpilot from 207 reviews, though some reviewers report pricing changes without notice. It is built for developers and has no point-and-click scheduler.
Subscribr's scripts follow a voice profile set for each channel, which Trustpilot reviewers often praise; it scores 4.7 there from 82 reviews. The free plan covers one channel, three idea batches a month and 10 research searches, with no time limit. Generated scripts, thumbnails and videos need Growth at $99 a month, or $83 billed yearly. Subscribr gives no refunds on any purchase, including annual plans.
Yearly billing saves two months on Buffer and about 20% on Postiz. Buffer's 14-day trial needs no card and drops to the free plan afterwards, and Postiz refunds a paid month in full if you didn't use it. Buffer is the only one of the four to state its VAT treatment: UK consumers pay VAT at the standard rate, and businesses can add a VAT number for reverse charge. All four price in US dollars.
Yes. Buffer covers 12 networks, including Bluesky, Mastodon, Threads and Google Business Profile.
Postiz's open-source edition can be self-hosted free under AGPL-3.0. It needs your own developer apps on each social network.
Buffer's free plan allows 10 scheduled posts per channel at a time, and its paid plans allow unlimited scheduled posts. Every Postiz plan includes unlimited posts, as do Zernio's free accounts.
Buffer has apps for iPhone and Android, rated 4.7 on the UK App Store. Postiz, Zernio and Subscribr are web tools with an API.
Postiz includes an AI copilot on every plan, with 100 AI images a month on Team and 30 AI videos a month on Pro. Subscribr's paid plans include minutes of video generation and editing.