Mac/iOS Apps to Make Your Life Easier

Mac Apps

Omi Screen Recorder

Best Free Screen Recorder & Camera Recorder on Mac

VidHub - Video Player

Organize and Play Your Videos with VidHub

OmniPlayer

Best Free MKV Player for Mac, Media Player for Mac, Video Player for Mac

OmniConverter

Mac Best Free Audio and Video Converter, Video to Audio Converter

Oka Unarchiver

Mac Best Free Unarchiver, Unzip files on Mac, WinRAR for Mac

uPaste

Mac Best Free Clipboard Manager

Omi NTFS Disk Pro

Best Free Mac NTFS Disk Manager, write files to NTFS Disk on Mac

Oka To Do for Mac

Best Free Task Manager and Reminder on Mac

F-Vault: Hide your secret files

Hide Your Mac Secret Files, Video, Photos

WindoWizard

Mac Best Free Window Manager, Split Screen App, Window Magnet

Oka Mirror for Roku

Free Mirror to Roku TV, Roku Stick, Roku Express on Mac

Oka Mirror for Samsung TV

Free Mac Mirror to TV, LG TV, Samsung TV, Sony TV

Oka Mirror for Chromecast

Free Mac Mirror to Chromecast

Oka Mirror for any device

watch Mac screen on any device with no latency using web browser

Color Folder Master

One-click to change folder color on Mac

WiFi Speed Test

Mac Best Free WiFi Speed Test App

File Zip and Encryptor

Free Mac file encryption and decryption tool

X-Disk

Mac USB and External Disk Monitor

xBrowser - chrome download helper

Open any URL in Chrome browser

iOS Apps

Ping AI

Chat with AI

Hottest Articles

How to enable Omi NTFS Disk on Mac App Store?

How to install/uninstall Omi Screen Recorder Audio Driver?

How to Install / Uninstall the Mirror Audio Driver

The FAQ of the recording screen on the Mac with audio using Omi Screen Recorder

VidHub User Guide：How to Mount Major Cloud Drives for Effortless Resource Management?

How to Mount Cloud Drives with Alist for Beginners? A Comprehensive Guide!

Why Oka mirror doesn’t find the device that I want to cast to?

How to setup network to cast my Mac to TV wirelessly?

How to read and write files in NTFS disks and manage NTFS disks on Mac with Apple Silicon M1

Best Magnet mac free alternatives

Latest Articles

Mac System Data Exceeding 200GB? Here’s How to Actually Clear It — A Deep Dive with Heavy Keynote Usage and Time Machine as Examples I. Problem Overview After long-term use, some macOS users discover that “System Data” in Storage Settings grows abnormally large. Common symptoms include: System Data occupying 200GB or more https://cdn.okaapps.com/resource/图2.webp No corresponding files can be located in Finder Deleting caches or log files has little effect Third-party cleaning tools are ineffective Uninstalling and reinstalling apps (such as Keynote) does not help Even after reinstalling macOS, the issue reappears after some time This problem is especially common among heavy productivity users, such as those working extensively with Keynote, Final Cut Pro, or design tools. II. Commonly Tried but Ineffective Solutions Users typically attempt the following methods, most of which fail to solve the problem at its root: Manually deleting directories such as ~/Library/Caches and ~/Library/Logs Using third-party cleaning tools like CleanMyMac or similar utilities Uninstalling and reinstalling Keynote Reinstalling macOS via “Reinstall macOS” These approaches are limited because they do not address the real sources behind System Data inflation. III. What Exactly Is “System Data”? It is important to understand that: System Data is not a real folder, but rather a collection of data that macOS cannot accurately categorize. System Data may include, but is not limited to: macOS system temporary files Application and system caches Portions of the user Library (~/Library) Files Spotlight cannot classify Large resource files inside application packages Local caches from cloud services (such as iCloud or OneDrive) iPhone / iPad backup files Residual data from deleted user accounts Time Machine local snapshots As a result, System Data cannot be reliably inspected or reduced through simple cache deletion or Finder-based browsing. IV. Key Cause #1: Time Machine Local Snapshots Consuming Disk Space How Local Snapshots Work Even when no external drive or NAS is connected, macOS will: https://cdn.okaapps.com/resource/图3.webp Create a Time Machine local snapshot every hour Retain snapshots from the last 24 hours by default If the backup destination remains disconnected, keep local snapshots associated with the most recent full backup These snapshots: Are based on the APFS file system Do not appear as regular files Are entirely counted under System Data In some cases, local snapshots can consume tens or even hundreds of gigabytes. https://cdn.okaapps.com/resource/图4.webp Why They Sometimes Cannot Be Deleted When Time Machine uses a NAS or network storage device as its backup destination, the following situations may occur: The NAS was previously disconnected The network path or IP address changed The backup was not re-“claimed” by the system As a result, macOS may treat these snapshots as belonging to an unreachable backup destination, leading to: tmutil deletion failures Errors such as Stale NFS file handle Snapshots that cannot be reclaimed, causing persistent disk usage V. Key Cause #2: How Keynote and Similar Apps Amplify System Data Keynote itself is not malfunctioning, but its design inherently amplifies System Data usage: Keynote files are actually packages containing large numbers of resources These may include: High-resolution images Embedded videos Fonts Animation and transition assets Spotlight sometimes fails to correctly classify these resources, causing them to be grouped under System Data. For users who frequently create large, media-heavy presentations, steady growth in System Data over time is expected. VI. Effective Solutions (Prioritized) Solution 1: Verify and Restore Time Machine Backup Status (Recommended) Open Disk Utility From the menu bar, select Show APFS Snapshots Select the system Data volume Check whether a large number of Time Machine local snapshots exist If using a NAS as the backup destination: Reconnect the NAS Select the original backup in Time Machine settings Follow the prompts to claim the existing backup Once the backup relationship is properly restored, macOS can automatically manage and reclaim snapshot space. Solution 2: Use Disk Analysis Tools to Identify Real Space Usage It is recommended to use tools that analyze disk usage without automatically deleting files, such as: GrandPerspective EtreCheck The goal is to identify: Which files or directories consume the most space Whether disk usage is abnormally concentrated in specific areas Avoid relying on “one-click cleanup” tools. Solution 3: Check for Residual Data from Old User Accounts If the device previously: Had multiple user accounts Removed accounts without deleting their home folders Then old home directories may still exist and be counted as System Data. Solution 4: Rebuild the System Environment Completely (Last Resort) When System Data usage becomes severely unmanageable and no clear source can be identified, the only definitive solution is: Fully back up all current data Erase the disk and reinstall macOS During setup: Migrate only the user account Do not migrate system settings, applications, or Library data This approach completely removes legacy data structure issues. VII. Long-Term Prevention Tips (for Keynote and Content Creators) Archive older Keynote projects to an external drive or NAS Avoid storing large volumes of presentation files locally for long periods Keep the Time Machine backup destination consistently available Avoid third-party tools that perform automated “system-level cleaning” Periodically monitor disk usage with analysis tools VIII. Conclusion Abnormally large macOS System Data usage is rarely caused by a single cache or log issue. Instead, it is typically the result of Time Machine local snapshots, application package resources, and inherited historical data structures working together. Only by understanding what System Data actually contains—and addressing the root causes—can disk space issues be resolved effectively and long-term.

Macbook 系统数据超过200G，教你怎么清空

How to sync VIP between Android & iOS

Wi‑Fi Not Working Well at Home? Use Your iPhone or iPad to Visualize and Fix It

OmniConverter: The Ultimate Video & Audio Conversion Tool for Everyone in 2025

Cloud Direct-Play • Format Freedom • 4K Excellence: How VidHub Redefines Media Playback

Best Mac Screen Recorders: In-Depth Review of Omi, Record It, Filmage Screen & TapRecord

Best Screen Recording Tools for Creators in 2025: Why You Should Try Omi

How to get Android App Crash Logs

Real-Debrid User Guide