Your Voice Beyond Borders

Providing top-notch digital marketing, data analytics, app development services.
We develop business of any sizes and industries.


PPC Management Service

We support PPC management such as Google Ads and FaceBook Ads. In addition to regular advertising operations, we offer consulting services such as numerically based effect measurement and analysis, and website improvement to optimize advertising cost effectiveness. We provide comprehensive support for your company’s promotional activities.

Digital Marketing Training

We are focused on results-based marketing solutions in the digital world. We also provide training workshops, materials, and hands-on assistance for your needs. We are committed to drive results and lead to the long-term success of our clients.

Application Development

Our application & platform development services offer complete end-to-end development and delivery of applications and platforms. We deliver native mobile applications seamlessly connected to cloud services and on-premise business systems. Our expertise enables completing clients objectives in a range of domains working with various data.


Voice4u AAC

Voice4u is a revolutionary AAC (Augmentative and Alternative Communication) application for the iPhone, iPod Touch, iPad and Android. It helps individuals to express their feelings, thoughts, actions, and needs. It is the perfect solution for learning and communication for autistic individuals and those around them. Voice4u will break down the barriers of communication for individuals with special needs. Voice4u has been used in homes, schools, and by professionals in over 120 countries and is commercially viable product.

Voice4u TTS

Voice4u TTS (Text-To-Speech) is a text-to-speech app with natural sounding voices. The app can read to you any text supported by iOS. This easy-to-use app supports more than 40 languages including English, French, German, Spanish, Russian, Chinese and Japanese. The Premium plan provides extended features, such as saving, sharing, printing documents and backup your data.

Management Team

Yumi Kubo CEO

Yumi is co-founder and CEO of Spectrum Visions and has a son with autism. Before founding the company, she has engaged in numerous activities in non-profit organizations such as Parents Helping Parents (PHP). She has given lectures in Japan and the U.S on special education, IFSP (Individual Family Service Plan), IEP (Individual Educational Program) and IET (Individual Educational Transition). Yumi also started several social groups to support children with development delays. Her story was featured in San Jose Mercury News, “Autism Mystery – Family Finds Hope Silicon Valley”. As a part-time instructor at Osaka University, she has been teaching young students entrepreneurship with her unique story.

Sei Higuchi, Ph.D. CTO / Co-Founder

Sei is leading the product & technology development. He received his Ph.D. in Aeronautics & Astronautics from Stanford University in 2009. At Stanford, he developed the adaptive model predictive control algorithm for microkelvin thermal control system. While he was a Ph.D. student, he also supported the autism community in the Bay Area. After completing his Ph.D., he started developing Voice4u. Sei also received a BS in Mechanical Engineering from Waseda University, Japan, MS in Aeronautics & Astronautics, and Ph.D. minor in Mechanical Engineering from Stanford University.




    12333 Saratoga Sunnyvale Rd., Ste. H, Saratoga, CA 95070