Building Trust at the Highest Stakes.
Designing the world's simplest Bitcoin self-custody solution
Client
Theya (YC W23)
Funding
$500k+
Industry
Fintech,
Crypto Currency,
Web3
What I did
Product Strategy,
Mobile App Redesign,
Motion
Elsewhere
Problem
Centralized crypto platforms have repeatedly failed to protect users’ Bitcoin, exposing them to credit, regulatory, and security risks beyond their control. While self-custody is the solution, existing hardware wallets often introduce complexity, poor usability, and single points of failure, making secure ownership difficult for everyday users.
Solution
They solve this by combining multisignature security with a simple, mobile-first experience. Using a 2-of-3 multisig wallet, users retain full control of their Bitcoin, while Theya provides a recovery-only key that can never move funds independently. With support for iPhones, Apple Watches, hardware wallets, and NFC keys, Theya makes self-custody safer, more resilient, and accessible, without compromising sovereignty.
Before and After
Mobile homepage
Create vault
3-key multisig
Additional key setup
Connect hardware
Bluetooth pairing
Multisig setup
Accept secondary invitation
Send BTC
Approve transaction
Impact
"With the redesign, our priority was to combine strong security with clarity and ease of use. Users regularly tell us they can set up vaults in minutes and feel far more confident managing their Bitcoin than they did with traditional wallets. That kind of trust and simplicity is exactly what we aimed for, and the results speak for themselves."
Vikas Choudhary
CPO and Founder, Theya
Metrics
Revenue (2024)
$1.4M
App Store Rating
4.8-star
Assets
₿1000+
Customers
3,000+