A Tallinn chauffeur service is private transport booked ahead at a fixed price in euros, carried out by an operator holding a taxi licence in Estonia under the Public Transport Act, with a driver who holds the national service card. In Tallinn those licences are handled by the Tallinn Transport Department. Nothing is hailed and nothing is metered: the car class, the chauffeur and the total are agreed before you travel, whether the booking is a Tallinn airport transfer, an hourly car service through the centre or a black car to a client meeting.
Estonia does not have a separate chauffeur licence. A paid car with a driver is a taxi in law, and RYDES works only with operators who hold that licence. What RYDES adds is the way the trip is sold: a reserved Tallinn car service that waits for a late flight without a running meter, collects at the ferry terminal on your ticket, and quotes one number with VAT and any airport or road charge already inside it. If an app is all you need, the taxi alternative page says plainly when that is the cheaper choice.
The same reservation covers the port and the country beyond it. TLL to the D-terminal and TLL to the A-terminal for same-day Helsinki connections, cruise port transfers on ship days, TLL to Pirita on the coast road, and fixed-fare Tallinn to Pärnu, Tallinn to Tartu and Tallinn to Riga routes. Companies flying people in every month can put the whole programme on corporate travel in Tallinn, with one invoice across every booking.