RentFlowTH is a dormitory and apartment management system built for landlords in Thailand. Owners use the RentFlow Owner app (iOS, Android, web) to record water and electricity meters, calculate utilities with 8 billing methods, and issue rent bills for the whole building in one tap. Tenants get the RentFlow User app to view bills, upload transfer slips, request repairs and chat with the owner; LINE is supported for tenants who prefer not to install an app. Payment slips are checked automatically against each bill, overdue rent triggers reminders and late fees, and leases can be signed online. Staff roles, parcel tracking, move-in/move-out, daily rooms, tax invoices and Excel accounting reports are included. Multiple properties are managed from one account. Priced per property with no setup fee or contract, and a 60-day free trial with no credit card.