# Zernio review (2026): is the free plan enough? > One API for posting, messaging and ads across social networks Checked Nov 13, 2026 ยท graded Nov 13, 2026 by ToolGPA. Zernio, formerly called Late, is a developer-focused API that lets an app or an AI agent post to, read from and message across many social networks through one integration. It also covers blog publishing, ad managers, and phone numbers for SMS, calls and WhatsApp. Billing is per connected social account, with every feature on every account. - **Category:** Social Media Schedulers - **Made by:** Zernio (since 2025) - **Website:** https://zernio.com - **Runs on:** Web - **Who should skip it:** Not for you if you want a scheduler with a content calendar, since it's an API. - **Facts last checked:** Nov 13, 2026 ## Pricing As of Nov 13, 2026, Zernio has a free plan, and paid plans start at $6 per connected account / month, after 2 free accounts. - **Pricing model:** Free plan - **Free plan:** The first 2 connected social accounts are free, with no credit card required. - **Free trial:** None listed. | Plan | Price | What you get | | --- | --- | --- | | Free (first 2 accounts) | $0 | The first 2 connected social accounts cost nothing and carry every feature. | | Build | $6 per connected account / month for accounts 3 to 10, usage-based | Accounts 11 to 100 are $3 each and 101 and up are $1 each. Card on file, cancel anytime. | | Enterprise | Custom | Offered past 2,000 accounts: custom rates, SAML SSO, SCIM, audit logs and a dedicated Slack channel. | Read from https://zernio.com/pricing on Nov 13, 2026. Prices change, so confirm with Zernio before buying. ## Key features - **Posting and scheduling API:** Unlimited posts, threads, first comments, queues and a calendar across its supported social networks. - **Comments, reviews and DMs:** Reply to comments, manage reviews and read and send direct messages through the same API; the first 10,000 messages a month are free. - **Analytics and webhooks:** Impressions, reach, engagement and follower tracking, plus real-time events for post status, messages and comments. - **Ads and blogs APIs:** Boost posts and create campaigns on several ad managers, and publish articles to WordPress, Shopify, Wix and Webflow. - **Phone numbers and messaging:** Buy numbers for SMS, calls and WhatsApp, itemized by usage, alongside the social inbox. - **MCP server and SDKs:** Offers an MCP server and client libraries so coding assistants and agents can call it. ## Good for - Developers adding social posting to their own app - AI agents and automation workflows that publish to many networks - Agencies building their own tools on a single integration ## Worth knowing - It is an API product: the pages are written for developers, not for people wanting a ready-made content calendar. - X (Twitter) API usage is passed through at X's rates and billed separately from the per-account price. - Prepaid balance does not expire and is not refundable, per its FAQ. - Phone numbers, calls, SMS, WhatsApp, ads and messages beyond 10,000 a month are metered on top. ## ToolGPA grades **GPA: 2.4 out of 4**, graded Nov 13, 2026. Zernio, formerly called Late, is one API for posting to, reading from and messaging across many social networks. The first 2 accounts are free with every feature, but it's written for developers, not people after a content calendar, and X usage is billed at X's rates on top. - **Value for money: B.** 2 accounts free, then $6 per account for accounts 3 to 10, so five accounts cost $18, near the $14 cheaper quarter, and it gets cheaper per account after 10. - **Free plan and trial: B.** The first 2 connected accounts are free with every feature and no card, enough for one person or a prototype. - **Features: C.** Posting and scheduling API, comments, DMs, analytics, webhooks, ads and phone numbers. The listing itself says it isn't a ready-made content calendar. - **Ease of use: D.** No store rating on record. It's an API: you build against it with SDKs, so it needs a developer. - **Platforms and integrations: B.** Web dashboard and an API with SDKs, an MCP server, WordPress and about a dozen networks. No desktop or phone app. These are ToolGPA's own grades. Graded from this listing, whose facts were read from Zernio's own pages on 13 November 2026. Not based on using the product, and shorter than our full reviews. ## Where it stands among social media schedulers - Zernio's GPA of 2.4 is higher than 65 of the 90 other social media schedulers we grade, and level with 16. - It stands best on free plan and trial (B, above 86 of 90) and worst on ease of use (D, above 0). - Its paid plans start at $6 a month, against a middle price of $24.46 for the category: 6 of the 79 others that charge start lower. - On features, ease of use and platforms it scores 2.0 out of 4. 5 tools score higher and cost less. The category's chart of price against score: https://toolgpa.com/charts/social-media ## Keep it, or make your own? **Keep it.** To replace Zernio you would be making the WhatsApp Business API, which Meta opens only through approved partners. That is not a weekend's work, with an AI app builder or without one. It is one of the better ones too: its GPA of 2.4 is higher than 65 of the 90 other social media schedulers we grade. It costs $72 a year. - You could make: Reports: an app builder makes this well. - You could not: The WhatsApp Business API, which Meta opens only through approved partners. - You could not: An AI agent, with the models and the safeguards behind it. - You could not: Texts from a business number, registered with the carriers. - You could not: It plugs into other products, Instagram, TikTok and LinkedIn among them, and has an API. A judgement by ToolGPA from this listing, by rules that are the same for every tool. Nothing was built to test it. ## Works with Instagram, TikTok, LinkedIn, Facebook, YouTube, Pinterest, Bluesky, WordPress **Tags:** Public API, Reports, WhatsApp messaging, Business texting, AI agents ## Alternatives - [Ayrshare](https://toolgpa.com/tools/ayrshare): Social media API for posting, analytics and comments in your product. [Compare](https://toolgpa.com/compare/ayrshare-vs-zernio) - [Post for Me](https://toolgpa.com/tools/post-for-me): Social media posting API for apps, priced by post volume. [Compare](https://toolgpa.com/compare/post-for-me-vs-zernio) - [Upload-Post](https://toolgpa.com/tools/upload-post): Posting API and scheduler for 22 social networks. [Compare](https://toolgpa.com/compare/upload-post-vs-zernio) - [Bundle Social](https://toolgpa.com/tools/bundle-social): Social media API with unlimited connected accounts. [Compare](https://toolgpa.com/compare/bundle-social-vs-zernio) - [Postiz](https://toolgpa.com/tools/postiz): Social scheduler with an API, MCP server and self-host option. [Compare](https://toolgpa.com/compare/postiz-vs-zernio) ## Sources The prices, plans, platforms and features above were read from these pages on Nov 13, 2026: - https://zernio.com/pricing - https://zernio.com/ - https://zernio.com/about - https://zernio.com/rebrand Page: https://toolgpa.com/tools/zernio Listed by ToolGPA (toolgpa.com).