This comparison uses official Apple and Google documentation checked on 13 October 2026. It covers library choices and preservation, rather than ranking editing tools we have not tested.
Compare the space your whole account uses
Apple includes 5 GB of free iCloud storage, shared with other iCloud data such as files and device backups. Google accounts include up to 15 GB, shared by Photos, Drive and Gmail. The larger free allowance helps only when enough of it remains available for your pictures.
A large Gmail account can leave little room for Google Photos. An iPhone backup can do the same to iCloud. Check used storage before treating either allowance as a photo budget. Moving a collection while retaining the original also means keeping capacity in both accounts.
For a US account, Apple’s monthly iCloud+ prices are $0.99 for 50 GB, $2.99 for 200 GB and $9.99 for 2 TB, before applicable taxes. Google’s public plan page localizes its offers and currency; use the quote shown for your Google account to compare available capacity and recurring price. The plan’s storage is the account total, not an extra allowance reserved for Photos.
If iCloud is simply full, start with our iCloud storage cleanup guide. Removing an obsolete backup may solve that problem without moving a library you already like.
Keep original quality when detail matters
Google Photos offers Original quality and Storage saver. Original quality retains the resolution and quality at which pictures and videos were taken. Storage saver compresses content, reduces photos larger than 16 megapixels to 16 MP and reduces video above 1080p to 1080p. New uploads in either setting count towards account storage.
Choose Original quality if you intend to crop high-resolution pictures, make large prints or preserve 4K video. Storage saver trades detail for space; it does not provide unlimited new uploads. Review the setting before uploading, while the full-quality files are still available elsewhere.
iCloud Photos keeps full-resolution originals in their original formats, including Live Photos. Optimize Storage changes device copies while keeping originals in iCloud. It helps a small-capacity phone use the library; it does not make the cloud account’s original files smaller.
Choose the library you will use across devices
On an Apple-only setup, keeping the main collection in Apple Photos avoids maintaining another app’s upload settings. Google Photos can make more sense when household members use both iPhone and Android: its backup and library access give those devices a common destination.
Windows does not automatically rule out iCloud. Apple provides iCloud for Windows and photo access on a PC. The useful question is whether that workflow fits your computer and household, rather than whether every device carries the same logo.
For privacy, Advanced Data Protection can extend end-to-end encryption to iCloud Photos. It is an optional setting with supported-device and recovery requirements, not the default protection of every photo library. Establish a recovery method you can retain; with this protection enabled, Apple cannot supply the keys needed to recover the encrypted data for you.
Using both needs a clear rule for removing photos
You can keep an iCloud library and upload the same pictures to Google Photos. Treat that as two maintained services: check the selected Google account, upload quality and backup status. A thumbnail can also represent a local picture, so its appearance alone does not prove a cloud copy exists in the other account.
Deleting through Google Photos can remove backed-up items from Google and from devices with backup enabled. Free up space on this device is a separate operation: Google’s iPhone instructions remove local copies that have been backed up to Google.
When iCloud Photos is also active, removing the Apple Photos copy can carry that deletion into iCloud. That follows Apple’s synchronized-deletion rule. If your aim is to keep the iCloud library and reduce the iPhone’s footprint, use Optimize Storage. A button intended to preserve the Google copy does not necessarily preserve the iCloud copy.
Before a large cleanup, open the destination library in a browser under the intended account and check the pictures and videos you care about. Keep a separate export of irreplaceable files as well. Running two apps does not by itself make every deletion harmless.
A transfer copies a collection, not the whole Apple library
Apple offers a transfer of an iCloud Photos copy to Google Photos. It leaves the iCloud collection in place and generally takes three to seven days, with some requests taking up to 30 days. The destination needs enough free space, and Apple says the transfer cannot run while Advanced Data Protection is enabled.
The copy has boundaries: Apple lists shared albums, smart albums, Live Photos and some metadata among content that does not fully transfer. Only the latest edit of a photo is sent, rather than both the edit and its original. Videos may arrive outside their albums. Retain the Apple library or a suitable separate export if these features matter.
Google’s transfer guidance confirms that pictures added to iCloud afterwards do not automatically synchronize to Google Photos. After a move, choose which app will upload new photographs. Otherwise a successful transfer can leave your newer collection quietly growing somewhere else.
Keep iCloud Photos as the main library when native Apple formats, Apple Photos organization and optimized device storage are your priorities. Choose Google Photos when maintaining an iPhone-and-Android collection matters more. Compare available space and upload quality, then preserve the pieces a transfer leaves behind before retiring the old library.
