A new jailbreak app aptly called MyOS is available on the Cydia App Store that allows users to enable or disable features (mostly) introduced in iOS 4 or later.

So if you think that multitasking is slowing your iPhone (especially older iPhone models) then disable it to see if it helps, if it doesn’t then you can re-enable it.

You can achieve all this via the Settings app.

Here is a brief description of MyOS app:

Toggle one or more features and then press the Respring button.

By default, only the default features for your platform are enabled as of version 1.0.1.

You can enable or disable the following features using MyOS app:

● Multitasking – Gives you the user the option to turn Apples native multitasking feature on and off at will.
● Homescreen Wallpapers – The ability to enable and disable Apples own implementation of backgrounds in SpringBoard on and off.
● Unified iPod – Whether you like iPod.app on your iPod Touch or having Music.app and Video.app on your iPhone, this gives you the choice.
● AppStore – Don't like what the official AppStore has to offer, or want to prevent people from using it? this gives the ability to turn off the AppStore.
● Contacts (iPhone models only) – Stand-alone contacts make no sense when you have the Address Book in Phone.app? using this option you can turn it off.
● HDR (Requires hardware camera) – Enable HDR on unsupported devices or disable it from your iPhone 4, the decision is yours.
● GameCenter (iPhone 3G only) – Enable GameCenter on your iPhone 3G.
● Camera.app (Requires hardware camera) – Disable the camera on your device.
● Voice Control (Voice control capable devices only) – Disable Voice Control on all supported devices.

MyOS supports iPhone 4, iPhone 3GS, iPhone 3G, iPod Touch 4G, iPod Touch 3G and iPod Touch 2G.

MyOS is available on the Cydia App Store for $0.99.

As always, please let us know what you think of MyOS and which feature you're planning to enable or disable using this jailbreak app in the comments section below.