The problem with Mac cleanup apps
Open any Mac cleanup app and the first thing you see is a big red number. "47.3 GB of JUNK found!" It's designed to make you panic. Some of them even show a sad Mac face.
We've been working on Smartly, and the hardest part isn't finding files to clean. It's being honest about what's actually worth deleting.
Most of that "junk" is fine where it is
System caches exist for a reason. They make your apps faster. Delete them and macOS rebuilds them within hours. You saved disk space for about twenty minutes.
Browser caches? Same thing. Your Mac is smarter than most cleanup apps give it credit for.
What actually wastes space
After months of research and testing on our own machines, we found that the real space wasters are boring:
- Old Xcode derived data if you're a developer. This one can be 10-50GB easily.
- Duplicate photos from importing the same camera roll twice.
- Forgotten downloads sitting in ~/Downloads from 2019.
- App leftovers from apps you deleted months ago but their support files stayed behind.
None of these need a scare screen. They just need a clear list and an explanation of what each thing is.
The design principle
Smartly won't show you a panic number. It shows you categories, sizes, and what will happen if you delete each one. No urgency, no upsell. If there's nothing worth cleaning, it tells you that too.
We'd rather have people open the app once a month and trust it, than open it every day out of anxiety.