Google Drive, Dropbox, and OneDrive all do the same basic job — store your files in the cloud — but picking between them usually comes down to which company already has your email, your office suite, or your phone's operating system. Here's how the three actually compare for personal backup, and what to do once you realize the honest answer is "it depends" or, more often, "more than one of them."
Google Drive vs OneDrive vs Dropbox at a glance
| Google Drive | OneDrive | Dropbox | |
|---|---|---|---|
| Free storage | 15 GB, shared with Gmail and Google Photos | 5 GB | 2 GB |
| Best fit | Gmail and Google Docs users | Windows and Microsoft 365 users | People who want to stay out of both ecosystems |
| Works on | iPhone, Android, Mac, Windows | iPhone, Android, Mac, Windows | iPhone, Android, Mac, Windows |
| In Sync | ✓ | ✓ | ✓ |
All three work with Sync, so you can back up to whichever one fits each job. Free storage checked October 2026 on each provider's plan page.
Google Drive: best if you live in Gmail and Google Docs
Google Drive's biggest edge isn't storage, it's integration — if you already use Gmail, Google Photos, or Google Docs, Drive is where those files already live, and backup is mostly a matter of pointing your phone's camera roll at it. It works the same on iPhone, Android, Mac, and Windows, so it doesn't lock you into one device maker. The downside is the usual one for any big-ecosystem product: your storage is shared across Gmail attachments, Google Photos, and Drive itself, so a full inbox can quietly eat into backup space you thought you had.
Dropbox: the most platform-neutral option
Dropbox doesn't push a photos app, an office suite, or an operating system at you — it's just a folder that syncs, which is exactly why it's stayed popular with people who don't want to commit to Google or Microsoft's ecosystem for anything else. Its desktop sync client is genuinely smooth, and cross-platform support has always been a first-class feature rather than an afterthought. The tradeoff is free storage: Dropbox's no-cost tier has historically been the smallest of the three, so a real phone backup tends to mean a paid plan sooner than with Drive or OneDrive.
OneDrive: the obvious pick on Windows
If you're on Windows and already pay for Microsoft 365, OneDrive is baked in deeply enough that skipping it barely saves you anything — you're already paying for the storage as part of the Office subscription. It backs up Windows desktop folders automatically and works fine on iPhone and Android too. Off Windows, though, it feels like a guest in someone else's house: usable, but clearly built with one platform in mind first.
Where all three fall short
None of them talk to each other. If your photos are on Google Drive, your work documents are on OneDrive because your job requires it, and an old Dropbox account still has five years of files you've never migrated, each provider expects you to live entirely inside its own app to see any of it. There's no built-in way to browse all three from one screen, move a folder from one to another without a manual download-then-upload dance, or back up the same phone to more than one of them without installing three separate apps and repeating the same setup three times.
You don't have to pick just one
This is the part most comparisons skip: you don't actually have to choose. Sync by Miciniti connects to Google Drive, Dropbox, OneDrive, Box, and Amazon S3 — plus local and USB storage — from a single app on iPhone and iPad, Android, Mac, and Windows. Add whichever of the three you already use — or all three, if that's genuinely your situation — and back up to each with its own task: photos to Google Drive, work documents to OneDrive, an archive to Dropbox. Our guide to syncing files to Google Drive, Dropbox & more walks through setting up your first task step by step.
Moving files between Dropbox and Google Drive
If you're moving from one provider to another, most often Dropbox to Google Drive, Sync does it in two steps: a Restore task brings the files down to your device, then a Backup task sends them up to Google Drive. There's no direct cloud-to-cloud copy, so the files pass through your device; the full walkthrough is in How to Move Files From Dropbox to Google Drive (and Back).
What it costs
Sync is free to start: connect any one of Google Drive, Dropbox, or OneDrive at no cost, ad-supported, and try backing up a folder before deciding anything. Connecting more than one drive at once, plus USB/external drive support and the built-in Wi-Fi web server, unlocks with a Sync subscription or a one-time lifetime purchase — no per-drive unlocks, just one upgrade that opens everything.
Get Sync
Download Sync for iPhone and iPad, Android, Mac, or Windows — and if you're backing up to more than one drive, our complete guide to file synchronization covers how Backup, Backup Sync, Restore, Restore Sync, and Full Sync each behave.
