iPhone Screenshots


Cumulus does not work with JungleDisk buckets that are not created in their compatibility mode. JungleDisk uses a proprietary format that is incompatible with other S3 clients including Cumulus.

Cumulus is the Amazon S3, Simple Storage Service, client for the iPhone/iPod Touch. It enables you to add files to your S3 storage from anywhere. You can manage your buckets, bucket permissions, files, and file permissions. You can also send email and Twitter tweets containing your object links.

No Need To Enter S3 Credentials Manually
The application now provides a way to log into your S3 account directly and obtain your Access Identifiers automatically.

If you would prefer, however, you may simply go to http://www.cumulusapp.com and enter your S3 credentials in our secure form. An email containing an application link for Cumulus will be sent. Open the email on your iPhone or iPod Touch and click on the generated link. Your S3 credentials will be automatically loaded into Cumulus. You simply tap to accept and you will be able to begin using your S3 account from Cumulus.

Now With Video Support!

With Cumulus, you can manage your Amazon Simple Store Service (S3) account on your iPhone or iPod Touch from anywhere. Add new video, image and text resources on the go and manage your resource access control (permissions).

Upload Video Clips from Your iPhone 3Gs

Cumulus allows you to take your videos you’ve just captured and upload them to your S3 account. Once finished, you can then play them back or send an email or tweet to your friends instantly.

Upload Pictures

Snap a picture using your iPhone and then upload it quickly to your S3 account. You choose the path to the picture and upload. It’s as simply as that.

Add Text Resources

You can create a text resource simply. You create a new object in the S3 bucket of your choice and upload. The resource is now available from anywhere.

Email Notification

Once you have uploaded an image or a text resource, you can email the direct link to anyone in your address book. When they receive the email, they can click the link to see what you’ve just added to your S3 account.

Twitter Integration

When you post a new picture or text resource to your S3 account, automatically update your Twitter status with a link to that resource. It makes it quick and easy to alert all of your followers of the new resources. Cumulus now uses URL shortening to keep your URLs manageable and it also lets you add an additional message before you update your status.
Access Control Management

You can simply change the access control for entire buckets or for individual resources. Load the resource or bucket and edit. Select your desired access control level and save. That’s it. Your resource access is updated.

What’s New

Version 1.1.3

- Added ability to set access control for unknown file types.

Ratings and Reviews

42763b01-6457-45ce-8873-709a37 ,

Bug report: w/ multiple AWS cred, selection doesn't work

I get a dialog that says I have multiple AWS creds (accurate). I click the select button in this dialog. Nothing happens.

Seems like a good app, but haven't had a chance to test it further because of this issue.

2.71828183 ,

Poor error handling

My account has a default region associated with it. (For other AWS services) When making an API connection to s3, it's necessary to specify the generic endpoint.

Because it doesn't handle this error, this app has no functionality for me.

ColbyWanShinobi ,


Doesn't work at all on iPhone 6 and IOS 9


Matt Long
1.1 MB
Requires iOS 3.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© Skye Road Systems, Inc.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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