We're building the future of coaching at scale

Mario García de León, founder of twinvoice
Clients served

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From youth mental health organisations to sales training academies, each with their own AI voice coach.

AI voice coaches deployed

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Roleplay partners, feedback coaches, interview trainers, and emotional support agents live in production.

Countries

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Active deployments in the Netherlands, Germany, and Belgium, with the platform supporting five languages.

Our Mission

The best trainers and coaches in the world can only help a handful of people at a time. Their expertise is locked inside their heads, available only during working hours, limited by geography and calendar slots.

Twinvoice exists to change that. We give trainers the tools to turn their methodology into AI voice agents that coach, challenge, and support their students 24/7, in their own voice.

Our Vision

We believe every person deserves access to high-quality coaching, not just those who can afford a personal trainer or happen to work at a company that invests in development.

We're building a platform where expert knowledge flows freely, where a sales coach in Amsterdam can train thousands across Europe, and where a young person in crisis can reach a supportive voice at midnight.

The people behind twinvoice

A small team with deep experience in coaching, voice AI, and product development.

Mario García de León
Founder
Peter Straatsma
Advisor

We don't just build technology, we build trust

Privacy first

All data hosted in the EU. GDPR compliant. Voice recordings deleted within 24 hours. We treat your data the way we'd want ours treated.

Simplicity

Powerful technology should be easy to use. If a trainer needs a developer to set up their agent, we've failed.

Human at the core

AI amplifies human expertise, it doesn't replace it. The trainer's voice, methodology, and judgment remain central to every interaction.

Accessibility

Great coaching shouldn't be limited by language, timezone, or budget. We build for reach, not exclusivity.

Practice over theory

Reading about a skill is not the same as practising it. Voice conversations build real confidence in ways text never can.

Transparency

Clear pricing, honest capabilities, no hidden fees. We tell you what twinvoice can do and what it can't.

Partnership

We build alongside our clients, not for them. Every feature in twinvoice exists because a real trainer needed it.

Continuous improvement

Every conversation teaches us something. We iterate on the platform, and our clients iterate on their agents. Getting better never stops.

Organisations deploying with twinvoice

"Young people need support at 11 pm, not just during office hours. Our AI voice coach provides emotional support whenever they need it. That's something we could never do before."
Levi van Dam
Levi van Dam
Founder
"My sales students were terrified of cold calling. Now they practice with AI prospects until they're confident. I can hear the difference in their real calls within a week."
Peter Straatsma
Lana van Mourik
Founder
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