How did Vacuumlabs and EMURGO work together to build the App Store's favorite crypto wallet in three months

INDUSTRY: Blockchain

BASE: Japan

SCOPE: Front-end

Image for Yoroi


EMURGO is a global blockchain technology company providing solutions for developers, startups, enterprises and governments. EMURGO develops enterprise-grade applications, builds developer tools, invests in startups, and provides blockchain education.

EMURGO has offices and manages projects in Singapore, Japan, the USA, India, and Indonesia. EMURGO is a founding member of the Cardano protocol. To connect and learn more, visit

The native cryptocurrency on the Cardano blockchain is called ADA.

Vacuumlabs has been a critical partner to EMURGO and Cardano, by providing us the flexibility of an extended team that feels and works as one of our own. We are pleased to have found a team that is competent, responsible, and understands complex topics in crypto. We see ourselves working with Vacuumlabs for a long time.

Nicolas Arqueros, CTO of EMURGO

What did we do for Yoroi

We created a mobile version of the Yoroi Wallet (originally released as Chrome extension by EMURGO) which allows users to send, receive, and store Cardano's ADA cryptocurrency. Yoroi is the first official mobile wallet and works on both Android and iPhone. The whole wallet was created in React Native with some of the security features developed as iOS and Android native.


Highlights of our collaboration

  • The app features a 4.9-star average rating in the iOS App Store and is recognized as the most favored wallet by the community
  • Rapid development - from idea to product launch within 3 months
  • Works on old OS versions (down to iOS 10.0 and Android 5.0)
  • Reached #1 in Productivity apps (Top New Free category) in the Google Play Store (Japan) just one month after launch
  • Offers very high privacy and security features that are customizable to the needs of individual users

The close agile cooperation with EMURGO and our effective and frequent daily communication allowed us to create this product from scratch in a very short time. The team was passionate about delivering the best product possible given the time-frame and we were all delighted for the ecstatic acceptance of the product by the Cardano community.

Michal Petro, PM from Vacuumlabs


Behind the curtain

  • Team of 4 engineers, 1 designer, and 1 PM/BA
  • The original design of app remains unchanged until now (2020)  and is used by thousands of people daily
  • Although most of the application was developed in React Native, the critical security features were developed in native Android and iOS code in order to achieve the highest possible level of security and UX
  • Agile development allowed us to start the project immediately without any assets and the detailed product specification was created in parallel to the development