Both apps carry a “free up space” button. Both are published by Google. Both live on the same phone. And they clean two completely different things. Files by Google removes junk, duplicates and old media from on-device storage. Google One manages the 15 GB (or paid tier) of storage attached to your Google account, spread across Drive, Gmail and Photos. Emptying one does not empty the other. Confusing them is the reason people pay for Google One and still see a “Storage almost full” notification on the lock screen.
For the wider Clean flow inside Files by Google, see our Files by Google review and clean guide. This article is the disambiguation piece: what each app cleans, where they overlap, and how to decide which one to open when.
The one-line difference
- Files by Google = on-device Android storage. What your phone shows in Settings, Storage.
- Google One = Google account storage in the cloud. What Google shows at one.google.com/storage.
If your phone says “Storage almost full” in the notification shade, that is Files by Google’s job. If Google emails you “You are running out of storage”, or Gmail refuses to send because your quota is full, that is Google One’s job. Neither app touches the other’s territory.
Quick comparison
| Aspect | Files by Google | Google One |
|---|---|---|
| What it manages | On-device Android storage | Google account cloud storage (Drive + Gmail + Photos) |
| Free plan | Fully free, no ads, no cap | 15 GB pooled across Drive, Gmail, Photos |
| Paid plan | None (there is no paid tier) | Basic 100 GB, Standard 200 GB, Premium 2 TB and above |
| Cleaning feature | Review and clean (junk, duplicates, large files, backed-up media) | Storage manager (large Gmail attachments, unsupported Drive files, blurry Photos, discarded items) |
| Works offline | Yes, entirely offline | No, requires connectivity |
| Where it lives | Phone home screen | Google One app or one.google.com in a browser |
| Aptoide | Files by Google page | Google One page |
| Google Play package | com.google.android.apps.nbu.files | com.google.android.apps.subscriptions.red |
What Files by Google cleans (and Google One does not)
Files by Google works entirely on your phone. It cannot see or touch anything in your Google account. Its Clean tab surfaces:
- Junk files that visible file-system cache directories are holding
- Downloads folder contents, grouped by the app that put them there
- Large files above a size threshold (usually 10 MB)
- Byte-identical duplicate files
- Old screenshots and memes past the age cutoff
- Locally-stored photos whose backed-up copy Google Photos has confirmed
Nothing on that list touches Drive, Gmail or your Google Photos cloud library. If you delete a photo through Files by Google’s backed-up-media card, the phone’s local copy goes; the cloud copy in Photos stays. That is the whole point of the workflow: free the phone without losing the memory.
What Google One cleans (and Files by Google does not)
Google One’s Storage manager is a web-first tool with an Android front-end. Open the Google One app, tap Storage, then tap Manage storage. It surfaces:
- Large Gmail attachments and emails in Spam or Trash
- Files in Drive that are broken, discarded, or in file formats the cloud can no longer preview
- Photos and videos marked blurry or over-exposed by the Photos AI
- Emptied Trash items past their 30-day window (these are already gone; the app confirms the reclaim)
The delete happens in the cloud. On a phone that is set to Free up space in Google Photos, the local copy is also removed once the cloud copy is deleted. But that is a Photos-app behaviour, not a Google One behaviour: the cloud is the source of truth.
Where they overlap: Photos
The one place the two apps share ground is Google Photos.
- Files by Google removes the local phone copy of a photo that Google Photos has already backed up.
- Google One removes the cloud copy in your Google Photos library.
Delete a photo through Files by Google’s backed-up-media card: it is gone from the phone, still in the cloud. Delete it through Google One’s blurry/discarded-photos suggestion: it is gone from the cloud, and if your phone was set to Free up space in the Photos app, the local copy is already gone too. Deleting through the Google Photos app itself removes the item from both places (unless you Archive first, which hides it without deleting).
This is where the “I deleted it but it is still there” confusion comes from. The photo has two homes and you have to delete both to fully lose it.
When to open which
| Signal | Open |
|---|---|
| Phone notification: “Storage almost full” | Files by Google |
| System Settings shows internal storage at 90%+ | Files by Google |
| Google email: “Your Google storage is almost full” | Google One |
| Gmail refuses to send because you are over quota | Google One |
| You want to see what is filling your phone by folder | Files by Google, Browse tab, Internal storage |
| You want to see what is filling your Google account by service | Google One, Storage, Manage storage |
| You uninstalled an app but the storage bar barely moved | Files by Google (leftover data), plus a deeper tool from our Clean Master alternatives list |
| You are paying for 100 GB and Photos still says quota full | Google One |
Do you actually need Google One?
Not until you cross the 15 GB free-tier cap. Photos in Storage saver quality on the pixel-shipped tier fits about 5 to 8 years of casual smartphone photography inside 15 GB, longer if you skip video. Gmail typically holds well under a gigabyte for a personal address that has been active a decade. Drive is where the number climbs, mostly through big attachments people forgot they added.
Before subscribing, open Google One in a browser, run the Storage manager, and delete the low-hanging fruit (Spam Gmail, discarded Photos). Most first-time users recover 20 to 40 percent of their quota that way and postpone the subscription for another year or two.
If the number is unrecoverable, the current tiers are Basic 100 GB, Standard 200 GB, and Premium 2 TB. Prices vary by region; check the Google One app for your local number.
What you should not do
- Do not clear Google Photos cache in Files by Google to free cloud space. Cache is not cloud. Clearing it does nothing to your Google account quota.
- Do not “uninstall Drive to save space”. Drive on Android is a viewer; the cloud copy is not stored on the phone. Uninstalling frees a hundred megs of app binary, nothing else.
- Do not delete photos from the phone before confirming Google Photos backup is complete. If backup is paused or Wi-Fi-only and you are on cellular, the “backed up” label may be stale. Files by Google’s Clean card cross-checks this, but only if you have granted Photos and Files by Google the same account access.
FAQ
What is the difference between Files by Google and Google One?
Files by Google manages on-device Android storage: junk files, duplicates, downloads, large local media. Google One manages cloud storage attached to your Google account: Drive, Gmail attachments, and the Photos library. Deleting through one does not free space in the other.
Does Google One clean my phone?
No. Google One only touches items stored in your Google account. It has no scan of your phone’s on-device storage. If your phone’s Settings say Storage is full, you need Files by Google or your OEM cleaner, not Google One.
Does Files by Google delete photos from Google Photos?
Only the local phone copy, and only when the “Delete backed-up media” card is presented and you confirm. The cloud copy in Google Photos stays. To remove the cloud copy, delete inside the Google Photos app or via Google One.
Do I need both apps?
Yes if you use Google Photos or Drive. Files by Google keeps the phone tidy; Google One keeps the account tidy. They solve different problems.
Is Files by Google free?
Yes. Files by Google has no paid tier, no ads, and no in-app purchases. Google One is a subscription: 15 GB free, paid tiers from Basic upward.
