The program is a completely self-contained application for creating, adding, deleting, logging, and generating invoices of tenants.

TenantEye, from CS13, is an open software appliance for tenant metering, sub-metering, overrides and invoicing —including a tenant "smart phone" interface for overrides. Features include a comprehensive palette of meters for metering just about anything; suites, whichcan have an arbitrary number of meters; powerful rate scheduling capabilities; and automatic emailing or exporting of invoices.