Cake Wallet has unveiled Cupcake, a breakthrough mobile application that transforms any retired Android or iPhone into an air-gapped, fully offline hardware wallet for Monero (XMR) and Bitcoin (BTC). By removing shipping, supply-chain risk, and the need to share personal data, Cupcake delivers hardware-level security to users who have traditionally faced cost, availability, or privacy barriers. Support for Litecoin (LTC) with Silent Payments and MWEB is scheduled for later this year.
“If you have an old phone in a drawer, you already own a hardware wallet,” said Vik Sharma, Founder and CEO of Cake Wallet. “Just install Cupcake, create or restore your wallet, and you’re protected. No courier labels, no customs forms, and no one collecting your address.”
Cupcake operates entirely offline, requesting zero network permissions so that private keys never leave the device.
Users simply factory-reset a spare phone, disable all radios, install Cupcake, and create or restore a seed. The device then signs transactions offline, while a view-only wallet in Cake Wallet on a daily-use phone or desktop broadcasts them via QR code. Since the handset resembles an ordinary phone, it avoids drawing the attention that traditional hardware wallets can attract, thereby strengthening operational security measures.
“From Caracas to Kolkata, Cupcake brings true cold-storage security to places where dedicated devices are scarce, seized at customs, or priced far out of reach,” added Seth for Privacy, VP at Cake Wallet. “Repurposing an existing phone also keeps e-waste out of landfills, proving that privacy, security, and sustainability don’t have to be trade-offs.”
The public beta of Cupcake launches today, featuring support for Monero and Bitcoin. Litecoin, with full Silent Payments and MWEB privacy enhancements, is scheduled to follow in Q3 2025. Additional asset support, reproducible builds, and hardware-device integrations are planned for Q4 2025.
Cupcake is available for free on the App Store, Google Play, F-Droid, and as open-source APK and IPA packages on GitHub. Comprehensive setup guides can be found at docs.cakewallet.com/cupcake
About Cake Wallet
Founded in 2018, Cake Wallet is the leading open-source wallet focused on privacy, ease of use, and true self-custody. From pioneering Monero on iOS to integrating Bitcoin Silent Payments and Litecoin MWEB, Cake Wallet empowers over half a million users to securely and privately control their digital assets.
