# spacerecover > spacerecover is a Mac and iPhone app that shows what is filling your storage, explains each item in plain words, and clears only what you approve. Scanning is free; processing runs on your own devices. - [Home](https://spacerecover.com): What spacerecover does and how it works - [Pricing](https://spacerecover.com/pricing): Free scan, then a Single (one Mac) or Family plan to clean - [Downloads](https://spacerecover.com/downloads): Mac app and iPhone companion - [Contact](https://spacerecover.com/contact): Get help, ask about billing or send feedback - [spacerecover for Content creators](https://spacerecover.com/for/creators): spacerecover helps creators on Mac and iPhone make smaller video copies, shortlist similar shots and review editing caches, all on your own devices. - [spacerecover for Developers](https://spacerecover.com/for/developers): spacerecover finds Xcode DerivedData, archives, simulators, Homebrew, npm, Gradle, CocoaPods, pip, Docker and local AI model storage on your Mac, and explains what rebuilds. - [spacerecover for Families](https://spacerecover.com/for/families): spacerecover helps families keep the moments that matter: review repeated photos, make smaller copies of long videos and keep originals safely on the family Mac. - [spacerecover for Professionals](https://spacerecover.com/for/professionals): spacerecover helps busy professionals clear meeting recordings, old attachments, installers and app caches from their Mac, with every item explained and nothing removed without approval. - [spacerecover for Students](https://spacerecover.com/for/students): Running out of space on a 256 GB MacBook? spacerecover shows students what is filling their Mac, from old installers to lecture recordings, and clears only what they approve. ## Mac guides - [How to speed up a slow Mac: 12 fixes that actually work](https://spacerecover.com/guides/speed-up-a-slow-mac): A practical checklist to make a slow Mac faster using built-in tools: find what is using memory and CPU, stop login items, free up disk space, update macOS and more. - [How to stop apps opening at startup on a Mac](https://spacerecover.com/guides/stop-apps-opening-at-startup-on-mac): Too many apps launching when you log in make a Mac slow to start. Here is how to remove login items and background items, and stop windows reopening. - [How to use Activity Monitor to find what is slowing down your Mac](https://spacerecover.com/guides/use-activity-monitor-to-find-slow-apps): A plain-English guide to Activity Monitor: what the CPU, Memory, Energy and Disk tabs tell you, what common processes like kernel_task and WindowServer are, and when to quit something. - [How to fix “Your system has run out of application memory” on a Mac](https://spacerecover.com/guides/fix-mac-out-of-application-memory): What the Mac out of application memory warning means, why low disk space makes it worse, and how to fix it with Activity Monitor and a few settings changes. - [How to speed up Safari and Chrome on a Mac](https://spacerecover.com/guides/speed-up-safari-and-chrome-on-mac): A slow browser makes the whole Mac feel slow. Here is how to find heavy tabs, remove extensions, clear website data, and use Chrome Memory Saver and Safari settings. - [How to free up storage space on a Mac](https://spacerecover.com/guides/free-up-storage-on-mac): Your Mac says your disk is almost full? Here is how to see what is using space and safely clear it with built-in macOS tools, from Downloads and Trash to backups, caches and apps. - [What is System Data on a Mac, and how do you reduce it?](https://spacerecover.com/guides/what-is-system-data-on-mac): System Data in Mac storage can grow to tens of gigabytes. Here is what it contains, why it changes, and the safe ways to reduce it without deleting files macOS needs. - [How to clear the cache on a Mac safely](https://spacerecover.com/guides/clear-cache-on-mac): How to clear app, browser and user caches on a Mac without breaking anything, what caches are, when clearing them helps, and which folders you should leave alone. - [How to find large files on a Mac](https://spacerecover.com/guides/find-large-files-on-mac): Three built-in ways to find the biggest files and folders on your Mac: Storage settings, a Finder size search, and a read-only Terminal command. - [How to uninstall apps completely on a Mac, including leftovers](https://spacerecover.com/guides/uninstall-apps-completely-on-mac): Dragging an app to the Trash can leave caches, settings and support files behind. Here is how to uninstall Mac apps properly and safely find what they left behind. - [How to find and delete old iPhone backups on a Mac](https://spacerecover.com/guides/delete-old-iphone-backups-on-mac): Old iPhone and iPad backups can take tens of gigabytes on your Mac. Here is how to find them, decide which to keep, and delete or move the rest safely. - [How to use iCloud to free up space on your Mac](https://spacerecover.com/guides/optimize-mac-storage-with-icloud): Store in iCloud and Optimize Mac Storage can free lots of space by keeping files and photos in iCloud. Here is how they work, how to turn them on, and the trade-offs. - [Not enough space to update macOS? How to make room](https://spacerecover.com/guides/free-up-space-for-macos-update): If your Mac says there is not enough storage to install a macOS update, here is how to find out how much you need and free it up quickly and safely. - [How to compress videos on a Mac without losing much quality](https://spacerecover.com/guides/compress-videos-on-mac): Make video files smaller on a Mac using built-in tools: Finder’s Encode Selected Video Files, QuickTime Player, Photos and iMovie, plus how to choose a resolution and codec. - [How to find and remove duplicate photos on a Mac](https://spacerecover.com/guides/find-duplicate-photos-on-mac): Use the Duplicates album in Photos for Mac to merge duplicate photos and videos, then clear Recently Deleted to actually free up the space. - [How to clear Xcode DerivedData, archives and simulators](https://spacerecover.com/guides/clear-xcode-derived-data-and-simulators): Xcode can use tens of gigabytes. Here is how to safely delete DerivedData, old archives, device support files and unused simulators and runtimes on your Mac. - [How to clear Homebrew, npm, pip, Gradle, CocoaPods and Docker caches on a Mac](https://spacerecover.com/guides/clear-developer-caches-on-mac): Package managers and dev tools keep large caches. Here are the official commands to clean Homebrew, npm, Yarn, pnpm, pip, uv, Gradle, CocoaPods, Dart, Cargo and Docker safely. - [How to find and remove local AI models on a Mac (Ollama, Hugging Face, LM Studio)](https://spacerecover.com/guides/remove-local-ai-models-on-mac): Local AI models can each be several gigabytes. Here is where Ollama, Hugging Face and LM Studio store them on a Mac and how to remove the ones you no longer use. ## iPhone guides - [How to speed up a slow iPhone: 10 fixes](https://spacerecover.com/guides/speed-up-a-slow-iphone): A practical checklist to make a slow iPhone faster: restart, update iOS, free up storage, check battery health, limit background activity and reduce motion. - [How to clear the Safari cache on iPhone](https://spacerecover.com/guides/clear-safari-cache-on-iphone): Clear Safari history, cache and cookies on iPhone, or clear only website data to keep your browsing history. Fixes slow or broken pages and frees a little storage. - [How to free up storage on your iPhone](https://spacerecover.com/guides/free-up-storage-on-iphone): iPhone storage full? Here is how to see what is using space and clear it with built-in iOS settings: offload apps, clear Recently Deleted, trim Messages, shrink videos and more. - [What is System Data on iPhone, and how do you reduce it?](https://spacerecover.com/guides/iphone-system-data-storage): System Data on iPhone can use many gigabytes. Here is what it includes, why it changes size, and safe ways to bring it down without erasing your phone. - [How to offload unused apps on iPhone (and how it differs from deleting)](https://spacerecover.com/guides/offload-unused-apps-on-iphone): Offloading removes an app but keeps its data, so you can free space without losing anything. Here is how to offload apps manually or automatically on iPhone. - [How to reduce Messages storage on iPhone](https://spacerecover.com/guides/reduce-messages-storage-on-iphone): Messages attachments can take many gigabytes on iPhone. Here is how to review large attachments, delete old conversations automatically, and keep the photos you care about. - [How to find and delete duplicate photos on iPhone](https://spacerecover.com/guides/delete-duplicate-photos-on-iphone): Use the built-in Duplicates album in the Photos app to merge duplicate photos and videos on iPhone, then empty Recently Deleted to free the space. - [Deleted photos but iPhone storage did not change? Empty Recently Deleted](https://spacerecover.com/guides/empty-recently-deleted-on-iphone): Deleted photos and videos stay on your iPhone for up to 30 days in Recently Deleted. Here is how to empty it to free the space, and what to know first. - [How to reduce video size on iPhone and record smaller videos](https://spacerecover.com/guides/reduce-video-size-on-iphone): Videos are the biggest use of storage on most iPhones. Here is how to record smaller videos with the right camera settings, trim clips, and make smaller copies of existing videos. - [iPhone storage full even with iCloud Photos? Here is why](https://spacerecover.com/guides/iphone-storage-full-with-icloud-photos): iCloud Photos does not automatically free space on your iPhone. Learn how Optimize iPhone Storage works, why deleting photos removes them everywhere, and how to free space safely.