Algorithm Check
A post made mainly to test whether an account is still reaching viewers or being recommended normally.
“Algorithm check—comment an emoji if this showed up on your feed.”
Creators use the phrase when views suddenly fall, often asking followers to like, comment, or confirm that the post appeared.
The phrase developed as creators became increasingly aware of recommendation systems and worried about sudden changes in reach.
algo check
A shortened version of algorithm check.
reach check
A test of how widely a post is being distributed.
shadowban check
A post testing whether visibility has been restricted.
Does an algorithm check prove a shadowban?
No. Low engagement can have many causes and a single post cannot diagnose platform enforcement.
Why ask people to comment?
Comments both confirm visibility and may increase engagement signals.