Starting this month agile messenger, once a free instant messenger will begin charging a small monthly license fee. The software is available for most of the smartphone on the market.

From the site

We will begin charging a license fee of €2.99 Euro per month, charged directly to your phone bill. The exact monthly charge may vary from country to country depending on our agreement with the local mobile operators but will be approximately €2.99 or less in your local currency equivalent. You will be informed of the exact amount before you are charged. Alternatively you may purchase the software for a one time fee of €19.95 with your credit card.

The date that we start billing will be different for different countries, again depending on our agreement with the mobile operators, but for most users the billing will start within the coming two weeks.