# Whispp

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/whispp-b-v

- Industry: Software
- Headquarters: Leiden, Netherlands
- Website: www.whispp.com/
- Total disclosed funding: $0.8M
- Latest round: Seed (Jan 9, 2024)
- Investors on record: 2

## About

Based in the Netherlands, Whispp B.V. develops an innovative voice app aimed at helping individuals with voice disabilities and severe stuttering communicate effectively and naturally. Founded in 2018 and headquartered in Leiden, Netherlands, Whispp B.V. specializes in assistive voice technology. The company is co-founded and led by Joris Castermans, who has a history of entrepreneurial ventures. In July 2026, Whispp B.V. raised EUR 5 million in venture funding led by LUMO Labs BV. Whispp's primary offering is an assistive voice app designed specifically for individuals with voice disabilities and those who stutter severely. The app utilizes language-independent AI technology to convert whispered speech and vocal cord-impaired speech into a clear and natural-sounding voice, enabling effective communication. It caters to a broad spectrum of voice disorders, replicating users' healthy voices through recorded samples, and allows seamless calling and messaging without requiring recipients to download the app. Whispp's services are particularly beneficial in Europe and North America, where voice therapy solutions are increasingly essential for enhancing social interaction and productivity. Whispp operates on a B2C and B2B model, partnering with healthcare providers and organizations focused on speech therapy and voice rehabilitation. The revenue model is structured around subscriptions and direct app purchases, with tailored pricing plans for individual users and institutional clients, such as clinics and rehabilitation centers. By providing the app directly to patients, Whispp aims to maintain engagement post-therapy, thus driving recurring revenue through its unique functionalities, including personalized voice creation and communication capabilities.

The company will use the July 2026 funding to strengthen its IP portfolio, continue refining its proprietary AI models, and support the rollout of new products.

## Funding rounds

- Seed, Jan 9, 2024, $0.8M — Libertatis Ergo Holding B.V., LUMO Labs BV

## Investors

- Libertatis Ergo Holding B.V. — Seed
- LUMO Labs BV (https://capitalatlas.ai/funds/lumo-labs-bv) — Seed