Why the tool and the platform have different daily limits

Short answer: there are two limits, and they are unrelated. The platform limits what may be published through its API. The tool limits what may be published through the tool. The second is usually stricter than the first — and it is almost always the one you hit.

What the tool says

Publer states plainly that it sets the daily publishing limits itself, explaining this as protection against spam and an even distribution of resources:

Publer's limits, checked 2026-07-28.

For Instagram the difference is fourfold: the tool lets through a quarter of what the platform allows.

What the platforms say

The claim that "most networks do not limit the daily number of posts" was checked against the platforms themselves and did not hold everywhere:

• Instagram — no more than 100 posts through the API over a rolling 24 hours; current usage can be requested from a separate endpoint (documentation);
• Threads — 250 posts per 24 hours per profile, with a carousel post counting as one (documentation);
• YouTube — by default 100 video uploads, 100 search calls and 10,000 quota units per day (documentation);
• X — there is no daily limit at all: the limits are set in fifteen-minute windows for each endpoint (documentation);
• Pinterest — the unit of counting changes with the access tier: on the trial tier calls are counted per day, on the standard tier per minute (documentation).

Why it is worth knowing in advance

First. When you hit a limit, you have almost certainly hit the tool's limit, not the platform's. Changing plan will lift it; changing platform will not.

Second. Limits are counted in different units. YouTube's "100 uploads" and "10,000 units" are different quantities, and neither follows from the other. You cannot compare platforms by a single number.

Third. Tools handle expansion differently:

• Later on its entry-level plan does not sell extra bundles of profiles and users at all — only an upgrade to the next plan;
• SocialPilot does sell them: 4 USD per account, 5 USD per user per month.

The difference between "pay four dollars extra" and "move to a plan that costs twice as much" decides the choice entirely — and the line "from 18 dollars" does not show it.

What to do

1. Count your daily load — how many posts, across how many profiles. That is the only number you can take to a pricing table with.
2. Compare it against the tool's limit first, not the platform's: it is lower.
3. Check whether add-ons are sold individually. If not, your next profile costs a whole plan.
4. Do not carry a number from one platform to another. X has no daily limit; on Pinterest the unit of counting depends on the access tier.

More on how plans are built on the page what you are charged for. On the restrictions that no tool can get around — platform restrictions.