All program prices are based on a yearly subscription, no automatic renewal. Each mobile app’s subscription can be used on both android and ios devices simultaneously.
If you are a school district or other tax exempt organization, please e mail me at firstname.lastname@example.org with your entity’s official purchase order or other documentation (e.g. payment voucher, contract of sale, Form AC 946, Tax Exemption Certificate, Form ST-129, etc.) which indicates that the purchaser is a governmental entity. I will then send you an invoice excluding tax.