The OrthoHelp application was developed on the Android Studio platform, using the Java language and the following hash algorithms: SHA-1, MD5 and SHA-256. OrthoHelp was registered at the National Institute of Industrial Property under number 512019000555-4. Regarding content, information was distributed through texts and videos in four main sessions: general guidelines; guidance on oral hygiene; dietary information; information and guidance for possible unfavorable intercurrences. The complete content was evaluated and validated by eight specialists in Orthodontics from different universities. For this evaluation, a link was sent that allowed access to the virtual questionnaire. The specialists evaluated the information presented in OrthoHelp by answering questions whose response options followed a Likert scale. The results revealed that the OrthoHelp content received a high final approval score (82%). Another questionnaire to assess whether this content will be able to improve patients' understanding of orthodontic treatment with fixed appliances was developed. Cronbach's α coefficient score (0.748) showed that the questionnaire is a consistent and reliable instrument. OrthoHelp's content appears to be clear and helpful. Therefore, its use may benefit patients undergoing orthodontic treatment with fixed appliances.