Whispp
Whispp converts whispers or impaired speech into clear, natural voice while preserving speaker identity and accent directly on-device.
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Podcast Episode
🎙️ Deep Dive
Proxima Fusion, HIVE, Whispp — record fusion round, autonomous machines and reconstructed voice — Daily News July 7, 2026
Listen to the episodeAbout Whispp
Whispp is a Leiden-based AI startup founded in 2020 by Joris Castermans and Akash Raj Komarlu. The company develops real-time on-device voice reconstruction AI that turns whispered or impaired speech into clear, natural voice. In July 2026, it raised €5M in a follow-on investment round led by LUMO Labs and complemented by non-dilutive EIC Accelerator funding. The technology started as assistive tech for people with voice conditions or severe stuttering, but is expanding toward private calls, noisy calls, mobile/PC OEM integration and semiconductor partnerships.
The Story
Whispp began by helping people who lost their voice or stutter severely, before evolving into a broader streaming voice AI platform.
How Whispp works
Business Model
B2B/B2C voice AI with mobile app, desktop app, Android/Windows SDKs, API and OEM partnerships.
Revenue Model
Subscription/app, SDK/API licensing, OEM partnerships and potential hardware/software manufacturer agreements.
Products & Services
Key Products
- Mobile app
- Desktop app
- Android SDK
- Windows SDK
- Voice reconstruction API
Core Use Cases
- Accessible calls for people with voice conditions
- Private whispered calls
- Noisy environment calls
- OEM voice integration
- Conferencing and virtual microphone use
Market & Clients
Key Customers
People with voice conditions, consumers seeking private/noisy-call use cases, mobile and PC OEMs, semiconductor companies and telephony/communication platforms.
Geographic Presence
How Whispp competes
Competitors
Competitive Advantages
- Real-time on-device processing
- Language-independent technology
- Preserved speaker identity and accent
- Sub-100ms latency claimed on official site
- Assistive-tech origin with broader OEM potential
How Whispp grows
Growth Strategy
Advance AI models, develop additional IP/patents, launch new products and expand partnerships with global device manufacturers and semiconductor companies.
Distribution Model
B2C apps, B2B SDK/API licensing and OEM partnerships.
Moat (Defensibility)
Proprietary voice reconstruction models, patents/IP, on-device optimisation, user voice data expertise and OEM integration capability.
Regulatory Context
Relevant to privacy, voice biometrics, health/assistive technology claims, medical validation if positioned for clinical use, and on-device AI governance.
Key Risks
- Clinical validation needed for assistive applications
- OEM sales cycles
- Privacy and voice data sensitivity
- Competition from major platform voice stacks
- Quality variation across languages, accents and devices
Strategic Insights
- On-device AI is especially relevant when data is sensitive, personal and vocal.
- A technology born for accessibility can expand into much broader consumer and OEM use cases.
- Preserving speaker identity creates a different value proposition from simple noise reduction.
Funding & Investors
Funding Rounds
- 2026 - Follow-on investment round: €5M
Lead: LUMO Labs - 2026 - EIC Accelerator grant: €2.5M grant + equity commitment
Lead: European Innovation Council Accelerator - 2024 - Seed: €750k
Lead: LUMO Labs
Key Investors
Founding Team
Founders
Key Executives
- Joris Castermans - Founder & CEO
- Roland Vlaicu - Chief Product Officer
- Mahesh Sundaram - Chief Revenue Officer
Key Metrics
Lessons from Whispp
- Starting from an intense human need can generate technology with larger adjacent markets.
- On-device and privacy-by-design can be strong commercial differentiators.
- In voice AI, naturalness, latency and OEM integration matter more than isolated demos.
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Read AnalysisSources
- Leiden-based Whispp raises 5 million to scale on-device voice reconstruction AI technology globally — EU-Startups
- Whispp Secures 5 Million Investment to Revolutionize Digital Communication Through its Voice Reconstruction AI — Whispp
- Real-Time On-Device Voice Reconstruction AI — Whispp
- Whispp secures 2.5 million through EIC Accelerator — Whispp