Christella VoiceUp is a specialised app designed to assist individuals in feminising their voice. Developed by Christella Antoni, a Consultant Speech & Language Therapist with over 20 years of experience, this app offers a structured approach to transgender voice modification. Christella Antoni is recognised as the UK’s leading expert in this field. Christella VoiceUp provides a comprehensive course featuring over two hours of voice therapy training divided into three progressive stages: beginners, intermediate, and advanced. Each stage is available via in-app purchase and consists of five distinct lessons that cover the fundamental aspects of voice feminisation. These include the modification of resonance, pitch, intonation, and vowel length. The final lesson in each stage integrates these skills to help users maintain a feminised voice consistently. For those new to the app, Christella VoiceUp includes a FREE sample lesson and a FREE pitch analysis feature. This allows users to record their voice and receive a graph to track pitch changes over time. By dedicating just 10 minutes of daily practice, Christella VoiceUp aims to help users achieve substantial progress in feminising their voice. Christella VoiceUp makes voice feminisation accessible and personalised. All exercises are demonstrated by Christella herself, offering a consistent voice model along with clear explanations. The exercises follow a successful treatment model that gradually increases in complexity, ensuring users securely acquire crucial voice feminisation skills. Praised by many users, Christella VoiceUp has been highlighted for its effectiveness and ease of use. Reviewers have expressed their satisfaction, noting significant improvements in their voice and a reduction in anxiety concerning their speech. Christella VoiceUp is particularly beneficial for members of the LGBTIQ+ community seeking voice modification and support. It serves as a valuable tool for those looking to feminise their voice and gain confidence in their speech. Available on both the Apple App Store and Google Play, Christella VoiceUp stands out as a reliable resource for anyone aiming to develop a feminised voice through expert guidance and structured practice.