One link with every property you have available, where every inquiry becomes an application on one board, and viewings applicants book themselves. From $39 a month for up to 25 properties, charged in US dollars, with no contract.
Publish the times you are free. Applicants pick a slot from the listing, with a limit per slot, a confirmation, a reminder the day before and a way to cancel. On every plan.
Status, notes and budget on one record, and the messages with it. Ask for photo ID, proof of income or a reference and they upload it to their application.
No application fee and no screening fee, because there is no screening product. Applying, booking a viewing and messaging you cost them nothing.