Carat

Carat


** PLEASE READ BEFORE INSTALLING **

Carat is the first app to generate personalized recommendations for improving your battery life. After observing your use of the device for *about a week*, it will start to generate reports just for you.

Carat does not use GPS. It never runs in the background. The app uses almost no power.

** Thank you! **

Ever wondered why your battery is draining so quickly? Just install Carat, open it every few days so it can send data to our servers, and within a week Carat will start recommending Actions (just for you!) and even predicting the improvements you will see. Although Carat cannot measure energy use directly, it infers what apps are responsible using advanced machine learning methods.

And it's free!

As you use your device, Carat occasionally takes measurements and sends them to our backend servers in the cloud, where we apply cutting-edge algorithms to determine what steps you can take to use less energy. By collecting snippets of non-personal data from a large number of devices, Carat does not need to run continuously in the background. Nothing we collect identifies you, personally.

Carat will tell you which apps it thinks are hogs (they use a lot of battery) and which are bugs (they use a lot of battery on your device but not most others). Being a hog or a bug does not make an app 'bad', but a user trying to improve their battery life can use these designations to adjust their behavior.

== Carat Features ==

- Action List telling you how to improve your battery life and by how much
- Device information detailing exactly what data we are recording
- Reports apps that are using lots of energy and whether that is happening on other devices, too
- Detail views let you dive down into the data
- Low-overhead sampling requires almost no energy or CPU
- J-Score tells you how your battery efficiency compares to other users
- Sharing features let you post/tweet/blog about your experience; more users means more data which means better recommendations for you

Carat started at the AMP Lab, UC Berkeley, in collaboration with University of Helsinki. It is under active development by a team of researchers in the NODES group, Department of Computer Science, University of Helsinki. We are constantly making improvements, adding features, and giving you more knowledge about how your device is using energy. Remember, knowledge is power!

Recent changes:
Since 1.10:
-Slightly smaller samples
Since 1.07:
-Crashfixes.

Since 1.06:
-Actions screen should no longer be empty when you have no bugs.

Since 1.05:
-Better back button handling
-Crash fixes
-Smaller download

Updated since 1.03:
-More crash fixes

Updated since 1.02:
-More crash fixes

Updated since 1.01:
-Crash fixes for some users
-Wi-Fi only switch was not working for some users
-New setting: Hide apps with a small energy impact
-Disabled apps are now correctly counted by all screens
Add to list
Free
72
3.6
User ratings
2403
Installs
100,000+
Concerns
1
File size
3089 kb
Screenshots
Screenshot of Carat Screenshot of Carat Screenshot of Carat Screenshot of Carat
About Carat
** PLEASE READ BEFORE INSTALLING **

Carat is the first app to generate personalized recommendations for improving your battery life. After observing your use of the device for *about a week*, it will start to generate reports just for you.

Carat does not use GPS. It never runs in the background. The app uses almost no power.

** Thank you! **

Ever wondered why your battery is draining so quickly? Just install Carat, open it every few days so it can send data to our servers, and within a week Carat will start recommending Actions (just for you!) and even predicting the improvements you will see. Although Carat cannot measure energy use directly, it infers what apps are responsible using advanced machine learning methods.

And it's free!

As you use your device, Carat occasionally takes measurements and sends them to our backend servers in the cloud, where we apply cutting-edge algorithms to determine what steps you can take to use less energy. By collecting snippets of non-personal data from a large number of devices, Carat does not need to run continuously in the background. Nothing we collect identifies you, personally.

Carat will tell you which apps it thinks are hogs (they use a lot of battery) and which are bugs (they use a lot of battery on your device but not most others). Being a hog or a bug does not make an app 'bad', but a user trying to improve their battery life can use these designations to adjust their behavior.

== Carat Features ==

- Action List telling you how to improve your battery life and by how much
- Device information detailing exactly what data we are recording
- Reports apps that are using lots of energy and whether that is happening on other devices, too
- Detail views let you dive down into the data
- Low-overhead sampling requires almost no energy or CPU
- J-Score tells you how your battery efficiency compares to other users
- Sharing features let you post/tweet/blog about your experience; more users means more data which means better recommendations for you

Carat started at the AMP Lab, UC Berkeley, in collaboration with University of Helsinki. It is under active development by a team of researchers in the NODES group, Department of Computer Science, University of Helsinki. We are constantly making improvements, adding features, and giving you more knowledge about how your device is using energy. Remember, knowledge is power!

Recent changes:
Since 1.10:
-Slightly smaller samples
Since 1.07:
-Crashfixes.

Since 1.06:
-Actions screen should no longer be empty when you have no bugs.

Since 1.05:
-Better back button handling
-Crash fixes
-Smaller download

Updated since 1.03:
-More crash fixes

Updated since 1.02:
-More crash fixes

Updated since 1.01:
-Crash fixes for some users
-Wi-Fi only switch was not working for some users
-New setting: Hide apps with a small energy impact
-Disabled apps are now correctly counted by all screens

User reviews of Carat
Write the first review for this app!
Android Market Comments
A Google User
Apr 5, 2015
Good Clever Unick
A Google User
Mar 31, 2015
Carat Update reveals it never sampled itself before and is actually my worst offender! Did you forget to filter your own app from the results in the update? Yeah! "OOPS!". While its been updated frequently and my battery life dropped and Im uninstalling things on your advice and find your YOU'RE the culprit! Over 45 MILLION samples that didn't include Carrat and only some 300 that do, and YOU were the hog! I almost uninstalled Better Battery Stats over it and your app is way the hell worse killing over a half-hour of my battery by your own (pretty specific) estimaion? For what? Why?
A Google User
Mar 29, 2015
It tries but fails Had this for 2 years. Tried to root cause my battery consumption issues. Never succeeded. Installed another tool within 1 day found a runaway app.
A Google User
Mar 27, 2015
Great Amszing
A Google User
Mar 19, 2015
Each update is a crap shoot Early versions were great, now every other update crashes like made. Have chossen to uninstall and not look back.
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