You can download SmartaFone at no cost for a trial period. All functionality is present in the trial version and it supports unlimited users.
Once the trial version has expired, if you wish to continue using SmartaFone, you will need to purchase a licence. Two types of licence are available, Annual and LifeTime. Both types of licence are user based, you simply decide how many users need to have Exchange Public Folders on their Smartphones.
An annual licence, as the name suggests, expires after one year and you will have to renew it to continue to use the product. It does however, offer a lower entry price point. The Lifetime Licence, never expires and you may continue to use SmartaFone for as long as you wish.