The free version is free forever but may contain email banner adverts (relevant for an audience of school parents). There is also a limit of 20 active hub members. If this is sufficient for your needs, you can stay on the free version for as long as you like and just use the tickets and donations features.
However, if you like to plan the year ahead, using PlanSocial as a community hub, communication and volunteering tool for your whole school, and benefit from cheaper online ticket transactions, you can upgrade your community account within the Manage page of your app.
Need any help with this? Get in touch with us here at firstname.lastname@example.org.