Comparison

Dropbox vs Sync with S3

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Dropbox

Securely store, sync, and share your files and photos across all your devices. Easily upload, access, and send documents, videos, and more from anywhere, even offline. Offers robust backup and recovery features for peace of mind.

Highlights
  • Automatic photo and video upload
  • Offline file access
  • Large file sharing via links
  • Document scanning to PDF
  • Version history and file recovery
  • Cross-device synchronization
Read full description

Dropbox lets you upload, save, and transfer photos and files to the cloud. Backup and sync your pictures, videos, documents, and other files to cloud storage and access them from any device, anywhere. With advanced sharing features, it’s easy to share and send photos or files to family, friends, and co-workers. Features: • Automatically upload videos and photos from your camera roll to cloud photo storage - all in the background - for easy video sharing and photo sharing. • Access any file in your account - even offline - and preview over 175 different file types with no special software required. • Easily send large files by copying and pasting a link you can give to anyone, even if they don’t have a Dropbox account. • Scan documents, receipts, IDs, photos, and more using your mobile device and transform them into high-quality PDFs, so you can view and send anywhere. • Sync folders on your PC or Mac to Dropbox with computer backup, and recover older versions or restore deleted files with version history and file recovery. Sign up now for your free Dropbox Plus trial. You’ll get 2 TB (2,000 GB) of storage space - that’s enough room to save files from all your linked devices. And with Dropbox Rewind, you can roll back any file, folder, or your entire account, up to 30 days. Before starting a trial or completing payment, you’ll see the plan price. This amount will be charged to your Apple ID account at confirmation of purchase and on renewal and will vary by plan and country. Dropbox subscriptions renew monthly or yearly, depending on your plan. Your account will be charged for renewal 24 hours before the end of your current billing period. To avoid auto-renewal, turn it off within at least 24 hours before your subscription renews. You can turn off auto-renewal anytime from your Apple ID account settings. You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase. Dropbox is a secure cloud solutions leader trusted by Fortune 500 companies for their most sensitive data. Over 14 million paid users choose Dropbox because they know they can count on a company that’s also dedicated to their security and privacy—no matter what they do or where they are. Let Dropbox be your all-in-one file storage, file organizer, file transfer, and file sharing solution for all your devices. We’d love to hear from you! Join the Dropbox community: https://www.dropboxforum.com Terms of Service: https://www.dropbox.com/terms Privacy Policy: https://www.dropbox.com/privacy

About

Sync with S3

Automatically back up your phone's photos and videos to S3 storage, preserving your album and folder structure. It mirrors your library, uploads edited media and Live Photos, and ensures your S3 storage matches your device without deleting any original files.

Highlights
  • Syncs photo library to S3
  • Preserves album and folder hierarchy
  • Uploads edited photos and videos
  • Supports Live Photos video component
  • One-way sync, no phone data deletion
  • Selective folder/album syncing
Read full description

Sync for S3 synchronizes your phone’s photo library, including the album and folder hierarchy, to your S3 storage. For users who like to organize their photos into folders and albums, Sync will also - Sync automatically creates folders and albums you may have created in your phone’s photo library on S3 storage. - Uploads the video component for Live Photos. - Uploads the edited versions of photos and videos. - Mirror or backup your photo library. - Synchronize your entire photo library or only certain folders and albums. In summary, each time you run Sync, it will make sure any changes to your phone’s photo library are updated on your S3 storage, overwriting, renaming, uploading, and deleting items on your S3 storage if needed. Sync will also NEVER delete any photos from your phone. Sync performs a ONE-WAY sync only, making your S3 storage match your phone’s photo library. Any changes made on your S3 storage will not be synced to your phone, rather, the changes on your S3 storage will simply be overwritten the next time you run a Sync. Free Plan The free plan is limited to syncing up to 3 top-level folders and albums and up to 200 photos. Premium Plan Our affordable premium plan removes all restrictions and unlocks access to all future features. Subscription Pricing and Terms - Annual or monthly subscription billing will start immediately after you subscribe and will auto-renew each year or month. - Subscriptions will automatically renew unless canceled at least one day before the renewal date within 24 hours before the end of the current period. Payment will be charged to your Apple ID account at the confirmation of purchase. You can manage and cancel your subscription by going to your account settings in the App Store. - Subscriptions are non-refundable, so please choose this option carefully. - Please refer to the In-App Purchases section for pricing. Terms of Use — https://www.apple.com/legal/internet-services/itunes/dev/stdeula Privacy Policy — https://sync.photosplus.app/privacy.php

Screenshots

Dropbox4 screens
Sync with S34 screens

Verdict

The call

The clearest difference is review sentiment: Dropbox at 48% against Sync with S3's 0%. Dropbox also leads on rating (4.8 vs 1.0) and ratings volume (900K vs 1). Sync with S3's advantage is iOS requirement (15.6 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Dropbox sells 9 in-app purchases, starting at $6.99 per month and Sync with S3 sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Dropbox holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: Dropbox has 900K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 48% of Dropbox's written reviews are positive against 0% of Sync with S3's.

UpkeepUpdate frequency

Dropbox ships an update every 2 weeks, Sync with S3 every 2 months. The most recent releases landed on September 25, 2026 and June 8, 2026 respectively.

Scorecard6 real differences · 5 level
Dropbox versus Sync with S3: the parameters behind the verdict, then further details
ParameterDropboxSync with S3
PriceFreeFree
Rating4.8 (900K ratings) — better1.0 (1 ratings)
Positive reviews47.6% of reviews — better0.0% of reviews
Number of ratings900K — better1
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
Best chart rank#5 — better—
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.015.6 — better
Further details — not scored
Size228 MB27 MB
Age rating12+4+
DeveloperDropbox, Inc.Pixegram, LLC

Customer experience

Dropbox

All ratings900,290 ratings
Positive95.5%
Neutral1.7%
Negative2.8%
Written reviews2,055 reviews
Positive47.6%
Neutral6.3%
Negative46.1%

Sync with S3

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

Dropbox

Reported bugs

5 issues
  • Freezing on login screen
  • Duplicate file uploads
  • Incorrect file timestamps
  • Incompatibility with iOS updates
  • Disappearing recent files

Requested features

5 requests
  • Select all option for uploads
  • Background upload support
  • Integrated media player
  • Increased free storage
  • Flexible paid plan options

Sync with S3

Not enough reviews yet to summarise bugs or requests.

In-app purchases

9 purchases

Dropbox

Subscriptions9
  • Dropbox Simple - Monthly1 Month trial$6.991 Month
  • Dropbox Plus - Monthly$11.991 Month
  • Dropbox Plus - Monthly1 Month trial$11.991 Month
Show 6 more
  • Dropbox Plus - Monthly14 Days trial$11.991 Month
  • Dropbox Professional - Monthly$19.991 Month
  • Dropbox Professional - Monthly1 Month trial$19.991 Month
  • Dropbox Family - Monthly1 Month trial$19.991 Month
  • Dropbox Plus - Annual2 variants$119.991 Year
  • Dropbox Plus - Annual1 Month trial$119.991 Year
2 purchases

Sync with S3

Subscriptions2
  • Premium - Monthly$2.991 Month
  • Premium - Yearly$19.991 Year

Questions

Is Dropbox free?
Dropbox is free to download, with in-app purchases available.
Is Sync with S3 free?
Sync with S3 is free to download, with in-app purchases available.
Which has better reviews, Dropbox or Sync with S3?
Dropbox is rated higher. Dropbox averages 4.8 out of 5 from 900K ratings, while Sync with S3 averages 1.0 from 1 ratings.
Do Dropbox or Sync with S3 have ads?
Neither Dropbox nor Sync with S3 shows ads.
Which is updated more often, Dropbox or Sync with S3?
Dropbox ships an update every 2 weeks, and Sync with S3 every 2 months. Most recently, Dropbox was updated on September 25, 2026 and Sync with S3 on June 8, 2026.

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