iCloud vs OneDrive——どっちが優秀？
iCloudを選ぶべき人: Apple全投入なら考えずに使えるバックアップとSyncが欲しいAppleユーザー
OneDriveを選ぶべき人: Word・Excel・Outlookとシームレスに動くクラウドストレージが欲しいMicrosoft 365ユーザー
私たちの見解: iCloud for simplicity, OneDrive for power users.
| iCloud | OneDrive | |
|---|---|---|
| 料金 | Free 5GB with any Apple ID | iCloud+ 50GB $0.99/mo | 5 GB free | Microsoft 365 Basic $1.99/mo (100 GB) |
| 機能 | Seamless sync across iPhone, iPad, and Mac, iCloud Drive with Finder and Files app integration, Private Relay for anonymous web browsing (paid), Hide My Email for disposable addresses, Shared family storage with up to 5 members | Deep Microsoft 365 integration, Personal Vault for sensitive files, Real-time co-authoring in Office apps, Ransomware detection and recovery, Photo management and memories |
| こんな人に最適 | Apple users who want effortless backup and sync without thinking about it — it just works if you are all-in on Apple | Microsoft 365 users who want cloud storage that works seamlessly with Word, Excel, and Outlook |
| 学習コスト | 簡単 | 簡単 |
本当の違い
Both offer free tiers, so the real question is what you get when you start paying.
iCloud stands out with Seamless sync across iPhone, iPad, and Mac and iCloud Drive with Finder and Files app integration. OneDrive counters with Deep Microsoft 365 integration and Personal Vault for sensitive files.
iCloud's Achilles heel: terrible experience on windows and android — and 5gb free in 2026 is embarrassingly stingy. OneDrive's: sync client can be flaky — conflict files and mysterious sync failures still plague power users. Pick whichever weakness you can live with.
結論
If you value seamless sync across iphone, ipad, and mac and apple全投入なら考えずに使えるバックアップとsyncが欲しいappleユーザー, go with iCloud. If word・excel・outlookとシームレスに動くクラウドストレージが欲しいmicrosoft 365ユーザー matters more, OneDrive is your pick. Neither is a bad choice — but one will fit your workflow better.