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Carat 2.01 can also show App Recommendations on iOS 9.0 through 9.3.2!

Our next release will include settings recommendations for iOS 9.3.3+. We are already collecting the data for this, so stay tuned!


Carat is the first app to generate personalized recommendations for improving your battery life. After observing your use of the device for *a week or more*, it will start to generate reports just for you. You should open the app once every day or so, with an Internet connection turned on, until you start seeing results.

Although Carat uses Location Services (thus displaying the little icon), it is NOT using your GPS and is NOT running 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 with an Internet connection turned on 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 generally use a lot of energy and and those that specifically do so on your device (but not on most others). This does not make an app 'bad', but this advice can help a user improve their battery life.

== 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 is under active development by a team of researchers in 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!


Version 2.014

New icon
Fix display of model name for newer iPhones. Get model names from server-side.

Notes et avis

1.0 sur 5
1 note

1 note

aydinsag ,

Useless !

Ne fait pas ce qu'il promet, vous propose de passer à la version supérieur alors que vous êtes en 5.1.1, et c'est navrant car il propose vraiment que "ça" ...

wanarmand ,


Pas indispensable, mais pour ceux qui ont souvent plusieurs APP lancées en arrière plan, permet de savoir quelles sont les APP qui consomment le plus, cad celles qui vous videront la batterie le plus vite!
Il faut laisser carat ouvert en arrière plan quelques jours d'utilisation, vous aurez ainsi une analyse détaillée avec graphiques etc...

Supernam du 33 avec des <3 ,


Suuuuuperbe application , elle m'a change la vie en 3 jours , je ne suis plus le même homme. Enfin un truc utile et bon marche , en 7 mois j'ai sauvegarde 10sec d'autonomie supplementaire, c'est dire si je remercie les devellopeurs ! Je vous aimes !!!!! Tres fort avec des gros poutous partout !!;)


University of Helsinki
14.3 Mo

Nécessite iOS 7.0 ou une version ultérieure. Compatible avec l’iPhone, l’iPad et l’iPod touch.


Anglais, Finnois

Classé 4+
© 2012-2017 University of Helsinki, Department of CS & UC Berkeley, AMP Lab

Prend en charge

  • Partage familial

    Jusqu’à six membres de la famille peuvent utiliser cette app lorsque le partage familial est activé.

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