What is the best cloud storage app for iPhone?

Dropbox: Cloud Storage Backup, S tier, ranked #1 of 31, rated 4.8 by 919,885 people.

Which cloud storage apps are free?

31 of 31 are free to download: Dropbox: Cloud Storage Backup (S), Microsoft OneDrive (S), Google Drive (S), Google Photos: Backup & Edit (S) and more. 14 of them sell in-app purchases. 7 report no in-app purchases.

Which cloud storage app has the best App Store rating?

iMemories at 4.9 from 8,969 ratings.

AppTierList › All lists › Cloud Storage

Best Cloud Storage Apps for iPhone (2026)

31 apps ranked S through F · Updated 2026-10-19 · Ranked by AppTierList, computed, never sold · JSON

Dropbox: Cloud Storage Backup is the top-ranked of 31 cloud storage apps on iPhone, at S tier with 4.8/5 from 919,885 ratings.

1
Dropbox: Cloud Storage BackupS
Free + IAP · ★ 4.8 · 919,885 ratings · score 99
2
Microsoft OneDriveS
Free + IAP · ★ 4.7 · 487,868 ratings · score 98
3
Google DriveS
Free + IAP · ★ 4.8 · 7,869,820 ratings · score 98
4
Google Photos: Backup & EditS
Free + IAP · ★ 4.8 · 1,621,184 ratings · score 97
5
MEGA: Encrypted Cloud StorageS
Free download · ★ 4.6 · 107,939 ratings · score 96

What belongs in this list

Store my files, photos and videos online so I can reach them from any device and free up phone space.

Not here: automatic backup alone; local file management alone; file sharing alone; a password-protected vault on the device alone; storage cleaning alone

More lists: Best Cloud Backup Apps · Best Photo Backup Apps

How we pick

For this list we ask the App Store the same searches a person would, in several countries, and keep every app it returns. A model reads each app's listing and rejects the ones that only mention the use case. Every app that stays is scored out of 100 from four parts, each 0 to 100 and averaged with no weights: its App Store rating, how many people rated it, where the App Store itself ranks it for this list's searches, and how recently its current version shipped. An app showing Apple's Editors' Choice badge gets a fifth part of 100, which can only lift its score. Tiers follow fixed score bands: S from 90, A from 80, B from 70, C from 60, D from 50, F below. The list's leader is S if it scores 80 or more. On a list of 20 or more ranked apps, a tier from S to D takes in new apps only up to a quarter of the top 40: an app pushed out of a full tier falls to the next tier with room, and F takes the rest. An app already in a tier keeps its place while the tier is at most 2 apps over a quarter; past that, only the apps over that margin go down, lowest score first. Equal scores share a tier, and no app has a better tier than an app ranked above it. An app keeps its tier until its score passes the band edge by more than 1 point, or a full tier or the order above moves it. Only the top 40 of a list get a tier. Read the full method →

Compare every app

1
Dropbox: Cloud Storage BackupS
Free + IAP · ★ 4.8 · 919,885 ratings · score 99 · best in class
2
Microsoft OneDriveS
Free + IAP · ★ 4.7 · 487,868 ratings · score 98 · best in class
3
Google DriveS
Free + IAP · ★ 4.8 · 7,869,820 ratings · score 98 · best in class
4
Google Photos: Backup & EditS
Free + IAP · ★ 4.8 · 1,621,184 ratings · score 97 · best in class
5
MEGA: Encrypted Cloud StorageS
Free download · ★ 4.6 · 107,939 ratings · score 96 · best in class
6
Amazon Photos: Photo & VideoS
Free download · ★ 4.8 · 232,176 ratings · score 94 · best in class
7
Box: The power of Content + AIA
Free + IAP · ★ 4.8 · 190,576 ratings · score 94 · excellent
8
pCloud - Cloud StorageA
Free + IAP · ★ 4.7 · 8,229 ratings · score 93 · excellent
9
GMX - Mail & CloudA
Free + IAP · ★ 4.7 · 17,204 ratings · score 91 · excellent
10
Yandex Disk secure storageA
Free download · ★ 4.7 · 5,866 ratings · score 91 · excellent
11
Cloud Storage: Cloud Drive AppA
Free + IAP · ★ 4.5 · 1,668 ratings · score 91 · excellent
12
NextcloudA
Free · ★ 4.7 · 10,381 ratings · score 91 · excellent
13
Google OneA
Free + IAP · ★ 4.7 · 22,936 ratings · score 89 · excellent
14
TeraBox: 1TB Cloud & AI SpaceA
Free + IAP · ★ 4.3 · 18,924 ratings · score 89 · excellent
15
My Cloud OS 5A
Free · ★ 4.8 · 16,211 ratings · score 89 · excellent
16
My Cloud HomeB
Free · ★ 4.8 · 14,405 ratings · score 88 · good
17
Faves - cloud video storageB
Free + IAP · ★ 4.5 · 17,437 ratings · score 84 · good
18
Verizon CloudB
Free download · ★ 4.6 · 142,823 ratings · score 84 · good
19
IDrive Online BackupB
Free + IAP · ★ 4.3 · 4,960 ratings · score 79 · good
20
SmugMug - Store & Share PhotosC
Free + IAP · ★ 4.8 · 47,770 ratings · score 71 · situational · provisional
21
EgnyteC
Free download · ★ 4.8 · 11,636 ratings · score 69 · situational · provisional
22
Asurion PhotosC
Free · ★ 4.8 · 6,304 ratings · score 68 · situational · provisional
23
myPhotoVaultC
Free download · ★ 4.7 · 6,935 ratings · score 68 · situational · provisional
24
Synology DriveC
Free download · ★ 4.5 · 4,350 ratings · score 66 · situational · provisional
25
AT&T Personal CloudC
Free · ★ 4.6 · 2,540 ratings · score 66 · situational · provisional
26
Degoo: Online Cloud StorageC
Free download · ★ 4.5 · 9,459 ratings · score 64 · situational
27
Cloud Storage Backup & DriveC
Free download · ★ 1.0 · 1 ratings · score 63 · situational · provisional
28
iMemoriesC
Free + IAP · ★ 4.9 · 8,969 ratings · score 63 · situational · provisional
29
SecureSafe Password ManagerD
Free · ★ 4.8 · 19,665 ratings · score 62 · weak
30
Straight Talk CloudF
Free download · ★ 4.7 · 2,662 ratings · score 42 · avoid · provisional
31
TM FilemanagerF
Free · ★ 5.0 · 2 ratings · score 36 · avoid · provisional

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Questions people ask

What is the best cloud storage app for iPhone?: Dropbox: Cloud Storage Backup, S tier, ranked #1 of 31, rated 4.8 by 919,885 people.
Which cloud storage apps are free?: 31 of 31 are free to download: Dropbox: Cloud Storage Backup (S), Microsoft OneDrive (S), Google Drive (S), Google Photos: Backup & Edit (S) and more. 14 of them sell in-app purchases. 7 report no in-app purchases.
Which cloud storage app has the best App Store rating?: iMemories at 4.9 from 8,969 ratings.
How many cloud storage apps reach S or A tier?: 15 of 31. Tiers follow fixed score bands: S from 90, A from 80, B from 70, C from 60, D from 50, F below. The list's leader is S if it scores 80 or more. On a list of 20 or more ranked apps, a tier from S to D takes in new apps only up to a quarter of the top 40: an app pushed out of a full tier falls to the next tier with room, and F takes the rest. An app already in a tier keeps its place while the tier is at most 2 apps over a quarter; past that, only the apps over that margin go down, lowest score first. Equal scores share a tier, and no app has a better tier than an app ranked above it. An app keeps its tier until its score passes the band edge by more than 1 point, or a full tier or the order above moves it. Only the top 40 of a list get a tier.