Are there any apps that will improve wifi performance?

Hi.

This is a solution that's not an app, but I'd suggest looking into it. Get a wi-fi extender for the roujer you have.(Ex: if the router is a Netgear router, then get a Netgear extender.)

Like the other person said... you can get an extender which basically rebroadcasts the signal to and from your router. That gives you more coverage.

Or, move your router to a higher point in your house, perhaps on the same floor as your room.

Besides the useful suggestions mentioned above, you may also want to consider using a home plug.

The home plug range of
products use your home's powerlines - which are already installed - as a path to send high-speed digital data such as digital video and multi-channel audio. Plus, many HomePlug products combine Wi-Fi wireless networking. This means that you can extend your wireless network to achieve high performance connectivity anywhere in your home.

As a consumer, you want the products you buy to connect without hassle, while maintaining privacy. HomePlug products interface with numerous networking technologies to support entertainment and computing products, making HomePlug networks the high-speed backbone of affordable home networking solutions.

Many affordable HomePlug products are available today throughout the world. HomePlug products have high speeds, robust quality-of-service (QoS), and excellent security. You can use them to create a fast and secure home network that is available at every power outlet in your home.

http://www.homeplug.org/explore-homeplug/overview/

Hi queen of eagles,
I am sure if you google homeplug in your country, you will find many sellers/ distributors of homeplug, just do a google search
Thanks