INO, developed by Instituto Nacional de Ortodoncia, is a free Android app that allows users to manage their orthodontic appointments efficiently. With INO, users can easily confirm or cancel appointments without the need to call the clinic. The app also allows users to reserve appointments and access their 3D models to view their teeth and face.

INO's transparency policy is commendable, as it offers users complete access to their budgets, collections, ballots, and procedures. Users can also evaluate the attention they received and provide feedback on the app. INO also sends appointment reminders to ensure that users never miss an appointment.

INO's feature of downloading and sending X-rays taken at the clinic to personal email is an added advantage. The app also allows users to register their admission to the clinic through the app, provided Bluetooth is activated.

Overall, INO is an excellent app that simplifies orthodontic appointment management. However, it would be better if the developers could provide a more direct contact option for users to report any issues or suggestions.