About Eva

Eva (Exceptional Voice App) is a voice-training mobile app for transgender people.

We know how difficult it is to change your voice from male to female; that’s why we have developed this unique interactive coaching program. Eva guides you step-by-step through a series of lessons and courses. Eva’s real-time voice analysis tools provide instant visual feedback for you to immediately know if you’re on target with all the elements that make up your successful feminine voice — breath flow, pitch, resonance and more.

Eva’s unique voice training methodology consists of video-based instruction and practice, as well as several targeted self-guided exercises per lesson that use specially designed visual tools to translate your voice output into an easily recognizable representation on screen. These visually interactive tools provide you with a straightforward and playful learning experience.

The FREE EvaF app comes with our uniquely designed pitch-tuner tool and includes a comprehensive sample lesson, so you can get started training your voice right away! The free lesson gives you the opportunity to test the Exceptional Voice method and see if it is right for you before spending any money. Additional lessons are available as in-app purchases.

EvaF voice training program consists of three courses:

Voice Feminization Fundamentals (20 lessons) – for transgender women who are just beginning to transform their voices.

Beyond the Fundamentals (10 lessons) – for women who already have some voice training experience. Currently in development.

Mastery of Your Feminine Voice (10 lessons) – for women who feel confident with the skills they have developed and want high-level advanced techniques to maintain their feminine voices. Currently in development.

EvaM app comes with our uniquely designed pitch-tuner tool, so you can evaluate your voice right away. Voice training lessons are available as in-app purchases. The techniques and exercises are designed for trans* (including genderqueer and non-binary) people who are beginning to masculinize their voices. Whether you’re early in your gender transition, have been living full time for years, or are not planning a gender transition, the exercises and strategies will help you speak with a masculine voice.

New lessons will be added soon. The basic course will include a total of 10 lessons.

NOTE: Eva FtM 2.0 is NOT compatible with iPhones 4 or 4s.

IMPORTANT NOTE FOR iPhone 6S and 6S+ Users:

NOTE: EvaF is NOT compatible with iPhone 4 or 4s or iPad Pro.

About Kathe Perez


Kathe S. Perez is an internationally-known speech pathologist who has extensive experience working with business leaders, professional singers, broadcasters and others looking to improve or change their voices. Since 2000, she has focused her work on helping those in the transgender community discover their true voice through the use of her acclaimed voice feminization programs.

As founder and president of Exceptional Voice, Inc., Kathe specializes in giving those in the transgender (TG) community the voice training and tools they need to live their lives to the fullest and most authentic expression of their true gender. A certified speech-language pathologist, Kathe developed a voice feminization training system that has helped thousands of transgender women from all over the world express themselves as the women they truly are. From her 30-Day Crash Course Program and YouTube channel tutorials to one-on-one sessions, Kathe has given TG women a variety of resources they can use to transform their voices. Kathe has presented and demonstrated her voice feminization techniques and exercises at conferences around the United States including, Be-All, California Dreamin’, Colorado Gold Rush, Esprit, Fantasia Fair, First Event Transgender Conference, Holiday en Femme, IFGE Conference, Keystone Conference, and Southern Comfort Conference.

In 2010, Kathe had the honor of presenting to and collaborating with speech pathologists and voice scientists at The Karolinska Institute in Stockholm, Sweden. Kathe has co-authored a number of scholarly articles for professional publications and has worked with a variety of experts on techniques and training for realizing one’s voice potential. One such collaboration was with noted voice coach Lynn Skinner for the voice feminization audio training series, Fundamentals of Your Feminine Voicewhich has received international recognition and acclaim.

When not working with transgender individuals, Kathe provides speech, voice and public speaking training programs for companies and small businesses as well as individuals such as singers, actors, broadcasters, auctioneers and teachers.  She has taught graduate and undergraduate courses at the University of Colorado at Boulder, Metropolitan State College of Denver and the University of Northern Colorado at Greeley. Nationally, Kathe has conducted customized workshops, seminars and training programs for professionals who wish to improve their voices. In 1993, Kathe undertook doctorate coursework for speech and voice motor learning at the University of Colorado at Boulder. She received her Master of Arts degree from the University of Colorado at Boulder in 1986. She studied under famed Speech, Language, and Hearing Sciences Professor Lorraine Ramig, PhD, at the University of Colorado at Boulder and interned with one of the top voice specialists in the world, Robert Sataloff, MD. She is a certified speech-language pathologist and a member of the American Speech-Language and Hearing Association.  

About Exceptional Voice


Exceptional Voice, Inc.  (EVI) is a Colorado corporation providing communication of speech, voice and public speaking training programs for Fortune 500 companies, small businesses and individuals since 1997.

VoxPop-S-Color2 logo

In 2000, EVI’s focus evolved toward caring for transgendered women. After more than a decade refining the elements, training approach and techniques, EVI expanded into VoxPop, LLC, a Nevada LLC, which provides exceptional speech and voice training applications for mobile devices. The first line of products will be developed specifically for the worldwide population of transgender women. VoxPop, LLC., is a virtual company consisting of a core team of people (CEO, Content Developer, Graphic and UI Designer, Software Developers, Voice Science consultant, and Marketing Strategists). Our company name, which is derived from the Latin phrase, vox populi (“voice of the people”), best describes our heart and soul:  

  • to provide an innovative, lasting solution for the voice and communication problems of transgender people.
  • to help people overcome voice and communication difficulties by providing a new and unique learning experience that includes real-time intuitive visual feedback.