Short answer: the best app to clean up screenshots on iPhone is the one that isolates screenshots clearly, makes stale clutter easy to review in groups, and does not turn a low-risk cleanup job into a long manual audit.
Screenshot cleanup is one of the easiest iPhone cleanup jobs because most screenshots have lower emotional value than camera photos. The problem is not figuring out whether they are clutter. The problem is finishing the review fast enough that the clutter actually gets cleared instead of postponed again.
What the best screenshot cleanup app should do
Separate screenshots from the rest of the library immediately.
Help you move through old references, receipts, maps, and chat captures quickly.
Keep review visible so you can still spot screenshots worth saving.
Make screenshot cleanup feel like a short pass, not another full photo-library project.
When manual cleanup is enough
Manual cleanup is enough when screenshots are only a small pile and the category is still easy to scan inside Photos. If the backlog is small, you probably do not need a dedicated app workflow.
When an app is faster
An app becomes useful when the screenshot backlog stretches across months, mixes with saved chat images, or keeps blocking the rest of your library cleanup. That is where Cleanor for iPhone becomes a better fit: screenshot review is grouped into a simpler pass instead of being buried inside the full camera roll.
Why screenshots are often the best first win
They are usually lower-risk than personal photos.
They can create quick visible progress in one sitting.
They reduce visual noise before you move into harder cleanup jobs.
They often reveal whether the broader storage problem is screenshots or something heavier like large videos.
If screenshots are your main clutter category, continue to Screenshots cleanup. If the phone still feels full afterwards, move into How to free up iPhone space.
The best screenshot cleanup app is the one that makes screenshot deletion feel finishable in one calm pass.