Lastbit Lite & Cards: A Case Study

React NativeReact.jsTypeScript

After the success of Lastbit Wallet MVP, I spearheaded the development of two distinct apps, "Lastbit Lite" and "Lastbit Cards," which served as real-world applications of Lastbit's unique payment network technology.

These apps allowed seamless transactions between Bitcoin and Euros, with "Lastbit Cards" extending this functionality to any store accepting Mastercard. We reached a milestone with 6k+ users primarily in Europe, highlighting the viability and user adoption of our solution.

Deep Dive: Lastbit Lite & Cards

Lastbit Lite

Features:

  • Instantly send or receive Euros via Bitcoin
  • Supports Bitcoin transactions on-chain or via the Lightning network
  • Unique user profile for transactions through lastbit.me

Lastbit Cards

Features:

  • Universal card payments in any store accepting Mastercard.
  • Easy fund addition over the Lightning network
  • Enables Bitcoin payments directly from your card.

This section offers a visual and feature-focused breakdown, providing more insights into what each app offers to the end user.

What I Did

Role & Contributions

  • Built both "Lastbit Lite" and "Lastbit Cards" from the ground up.
  • Developed a native SDK module for KYC verification in React Native.
  • Managed and led the mobile development team.
  • Monitored the apps on both iOS and Android platforms.

Technologies

  • React Native
  • Native SDK for KYC verification
  • Bitcoin Lightning Network

Metrics

  • 6,000+ users from Europe and increased our earnings by 25%, helping us get into Y Combinator in W21 batch.
  • With Lightning Network and debit card support, earning it a high 4.5-star user rating.

Challenges and Learning

  • Crafting a seamless user experience for complex financial transactions.
  • Learning to manage and lead a team while maintaining code quality and meeting deadlines.