American Entrepreneur Builds Startup Success in France

When Olivier Jeannel was two years old, doctors diagnosed him with severe hearing loss. That challenge would eventually become the foundation for a startup that's changing how millions of people communicate.

Jeannel, a French-American who moved from California to Paris in the early 2000s, cycled through multiple business ideas before landing on one that clicked. In 2014, he launched Rogervoice, an app that provides real-time captioning and text-to-speech conversion for phone calls.

The timing couldn't have been better. France had just started its first startup accelerator programs, and they welcomed Jeannel immediately into the small but growing entrepreneurial community.

While the US is famous for its startup culture, France offered something unexpected: the perfect market. In America, accessibility laws had already driven the creation of communication tools for deaf and hard of hearing people, but France had a gap waiting to be filled.

Three years after launch, France passed the Digital Republic Act requiring phone carriers and customer service lines to be accessible. "I was like, 'Oh my gosh, guys, I'm here, I have an app for this,'" Jeannel said.

France's unemployment benefits gave him 18 months of financial support after leaving his job at Orange. His American background helped too, letting him launch a Kickstarter campaign when the platform only accepted US bank accounts.

The first fundraising round took 12 months but secured 95 investors who believed in the mission. Most returned in following years to invest even more.

The Ripple Effect

Today, Rogervoice does more than caption calls. Users can block callers, receive voicemails, save transcripts, and access sign language interpreting services for video calls.

The app now operates in 52 countries with partnerships across French carriers like SFR and Orange. For eligible Americans, calls are free thanks to Federal Communications Commission certification, making it especially valuable for expats.

While many French startups eventually move to the US for more capital and bigger markets, Rogervoice expanded American operations in 2026 but kept its headquarters in France. The country that had nothing for mass market telephone accessibility when Jeannel started now has deep roots in the company's mission.

Rogervoice has raised $2.5 million and continues growing where it all began, proving that the right combination of personal passion, market timing, and supportive infrastructure can build success anywhere.