The Best Free Social Media Scheduler Depends on One Question You Have Not Asked

"Best free social media scheduler" gets answered badly because the answers rank tools rather than limits. Every free tier in this category is generous somewhere and brutal somewhere else, and which trade suits you is not a matter of tool quality.

Here are the actual published limits, pulled from vendor pricing pages on 16 September 2026. Free tiers change more often than paid ones — verify.

What each free tier actually gives

The two shapes of "free"

Look at Buffer and Metricool side by side and you can see the two philosophies:

• Buffer restricts breadth, not depth in an obvious way. Three channels, but ten scheduled posts per channel that refill as they publish. If you post daily, the queue never really empties — 30 slots across three channels is more than a week of buffer.
• Metricool restricts depth, not breadth of function. One brand, but you get the analytics and competitor tracking that is the product's actual strength. 20 posts a month is under one a day.

Buffer's free tier is a scheduler you can genuinely run. Metricool's free tier is a dashboard with a scheduler attached. They are not competing for the same user.

The question that decides it

Are you constrained by account count or by output volume?

• Three or fewer accounts, posting often → Buffer. The refilling queue is the single most useful free mechanic in this list.
• One brand, posting a few times a week, wanting to understand performance → Metricool. 20 posts covers it and the analytics are the point.
• More than three accounts → no free tier here fits, and you should stop looking for one. The category prices by account, so free tiers are capped by account by definition.
• Technical, willing to host → self-hosted Postiz is the only genuinely unbounded free option, and it is free in the way a puppy is free.

The self-hosted footnote, with its real cost

Postiz is open source and you can run it yourself with no licence fee. That is the only route in this category to unlimited channels at zero software cost.

What replaces the subscription is platform app approvals — you need your own approved application with each network you publish to. Postiz's own FAQ addresses this directly, offering approvals as an optional paid service because "Facebook, Instagram, Threads and YouTube are more complicated"; earlier wording on that page put the typical wait at over a month.

So the honest accounting is: free software, plus your server, plus credential work, plus potentially a month of waiting per difficult platform. For a team with an engineer, that can be a good trade. For a solo operator, it usually is not.

A free constraint nobody lists

Buffer's free tier publishes something most competitors do not: an API quota. Free gets 1 API key, 100 requests per 15 minutes, 250 per 24 hours, 3,000 per 30 days.

The interesting part is the comparison up the ladder. Essentials gets 3 keys and 7,500 requests per 30 days; Team gets 5 keys and 15,000. But the 15-minute window is 100 on all three tiers.

Which means: paying more buys you more total, not faster. If you were planning to upgrade because an automation felt slow, that upgrade will not help. This is a surprisingly common way to waste money — and the opposite of how some other categories price (some antidetect browsers tier the requests-per-minute directly).

The limit none of these free tiers can lift

Worth ending on, because it saves people a lot of tool-hopping: the ceiling on how much you can publish to a platform belongs to your account, not to your scheduler.

TikTok's Content Posting API limits each user access token to 6 requests per minute and allows at most 5 pending shares in any 24-hour period. Instagram's content-publishing documentation states a 24-hour cap (it currently states two different figures on the same page — 100 in one section, 50 in a carousel section, so plan against the conservative one). None of these numbers change when you switch tools, because they are attached to you.

So if your free tier feels slow at publishing, check whether you are hitting the tool's limit or the platform's. They require completely different responses.

Three ways free tiers end, ranked by how annoying they are

Having compared a lot of these, the ways a free tier stops being useful fall into three shapes — and they are not equally bad.

1. A queue depth (least annoying). Buffer's ten-per-channel is a rolling buffer, refilling as posts publish. It limits planning horizon, not total output. You can post daily forever on it.
2. A monthly quota (moderately annoying). Metricool's 20 posts per month is a hard ceiling that resets. Predictable, but it decides your cadence for you.
3. A one-time allowance dressed as an ongoing one (most annoying). This one deserves naming because it is the least visible. Outside the scheduler category, we found an antidetect browser whose free tier advertises five profiles but whose bundled proxy traffic and mobile minutes are labelled one-time while the paid tiers say monthly. The tier does not degrade — it simply stops, on whatever day you exhaust it.

When reading any free tier, read the word after each number separately from the number. "Per month," "per channel," and "one-time" are three completely different promises wearing the same typography.

When free is the wrong question entirely

If you are running several accounts on the same platform, free-tier hunting is solving the wrong problem. Three free channels will not help, because your difficulty is not scheduling capacity — it is producing enough distinct content that the accounts do not read as copies of each other, and keeping them separated well enough that they do not read as one operator.

That is a different product category. NoobClaw works on that shape: local execution with a separate fingerprint browser and IP per account, and content generated per account from its own niche and persona. There is no free tier equivalent to Buffer's here — and if three channels and a refilling queue is genuinely all you need, Buffer free is the better answer and costs nothing.

FAQ

Does Buffer's free plan expire?

It is described as a permanent free plan rather than a trial, with paid tiers offering a 14-day trial on top. As always, the tier that exists today is not a promise about next year — but nothing on the page as of 16 September 2026 indicated a time limit.

What is the catch with "10 scheduled posts per channel"?

It is a queue depth, not a monthly quota. The page says "refill anytime," meaning slots free up as posts publish. So it limits how far ahead you can plan, not how much you can publish over time — a much friendlier constraint than a monthly cap, and the reason Buffer's free tier is usable for daily posting where Metricool's 20-per-month is not.

Are there free schedulers that support more than three accounts?

Not sustainably, in the hosted category — accounts are the unit these businesses sell, so giving many away for free contradicts the model. The genuine exception is self-hosting, where your limit is your own infrastructure and your patience with app approvals. See the cheapest scheduler measured by price ÷ accounts for the paid version of this analysis.