Best BUILDon (B) wallet app for real use
B · BNB Chain networkLooking for a BUILDon wallet or a B wallet app that does more than just hold? Zypto App is a non-custodial multichain DeFi wallet where you can hold B, swap into 24,000+ assets across 20+ chains, connect to dApps and put your crypto to work in the real world. All from one app, your keys on your device.
BUILDon runs on the BNB Chain network, which isn't integrated in the Zypto App yet. Request BNB Chain on X and we'll prioritize adding it so you can hold and swap BUILDon.
Request BNB Chain in Zypto App
Why Zypto is the best BUILDon (B) wallet for everyday use
Most BUILDon wallets do one thing: hold B. Zypto App is a full DeFi wallet built for actually using it. Hold B non-custodially on the BNB Chain network, swap into 24,000+ assets across 20+ chains via in-app DEX integrations, connect to dApps with WalletConnect, and use the value through the Zypto Premium Visa Card and Zypto's bill-pay and gift-card surfaces.
Whether you're new and looking for your first BUILDon wallet app or your first B wallet, or an experienced DeFi user who wants one wallet for holding, swapping and real-world spending, Zypto is built for both, without sacrificing self-custody.
BUILDon wallet for beginners and the best B wallet app
New to BUILDon? You don't need an exchange account to get a wallet. Download Zypto App, generate your recovery phrase, and you have a working B wallet in under a minute. Add your first B by receiving from another wallet, or by buying in-app where supported.
From zero to using BUILDon
Get the app
Download Zypto App on iOS or Android. Generate your recovery phrase. Your keys stay on your device.
Add B
Receive B from another wallet, or buy in-app where supported.
Use it everywhere
Top up the Zypto Premium Visa Card, swap into other assets, pay bills, or buy gift cards.
Your BUILDon is secured by you
Zypto App is non-custodial. Your private keys are generated and stored on your device, Zypto never has access to your B and every transaction is signed locally. For account access, every user sets a PIN with optional biometric security (fingerprint or face recognition). You can also filter your wallet to show only verified tokens, protecting you from random airdrops or unsafe assets. For offline hardware wallet security, pair with the Vault Key Card, card-based cold-wallet hardware that signs transactions over NFC, keys never touch the internet.
What is BUILDon?
BUILDon, traded as B, is a community and ecosystem token associated with the Base blockchain. It launched in 2025 and is positioned around rewarding on-chain activity and participation within the Base ecosystem. The token has a large community following and has been used in various Base-native applications and campaigns. Its design reflects the trend of ecosystem tokens that aim to tie users into a specific chain's activity and growth. As a newer community token, its trajectory will follow the growth of the Base chain and the strength of its surrounding community. You can track the BUILDon price and hold B in a self-custody wallet.
What you can do with BUILDon in Zypto
Zypto App connects your BUILDon to real-world spending. Swap into supported coins in-app, use your BUILDon in the real world.
Vault Key Card cold storage
Card-based cold-wallet hardware. NFC-tap to sign BUILDon transactions, keys never touch the internet.
Vault Key CardUse a Crypto Visa Card
Load the Zypto Premium Visa Card with crypto. Physical and virtual cards, use them wherever Visa is accepted.
Crypto cardsPay bills with BUILDon
Settle utility bills and mobile contracts with billers worldwide, paid with crypto from your Zypto wallet.
Bill payBuy gift cards with B
Gift cards from popular brands, paid with crypto. Settle in-app, redeem instantly.
Gift cardsTop up any phone
Send mobile credit across many countries in seconds. Pay with crypto, recipient gets local airtime.
Mobile top-upsCross-chain swaps
Swap BUILDon into 24,000+ assets across 1,000,000+ cross-chain routes. All in-app, all in two taps.
Multichain walletPay with crypto
Zypto App supports 100+ cryptocurrencies for card loads, mobile top-ups, bill pay and gift cards. Swap any asset into a supported coin in-app, all in a few taps.
Zypto PayHold any of these alongside BUILDon
Cross-chain swaps mean your B can become any of these in two taps.
662+ dedicated wallet pages
BUILDon wallet FAQs
What's the best BUILDon wallet app?
That depends on what you want to do with your B. If you're holding only, any non-custodial wallet works. If you want to hold, swap across 20+ chains, connect to dApps, and use crypto for real-world spending, Zypto App is purpose-built for that while still being fully non-custodial.
Is the Zypto BUILDon wallet non-custodial?
Yes. Your private keys are generated and stored on your device. Zypto never has access to your B. Every transaction is signed locally on your device before it reaches the network.
How do I spend crypto with Zypto Premium Visa Cards?
When you load the card in Zypto App, your crypto is converted into USD. Conversion happens at load, not at the checkout, so you can lock value in, avoid volatility and spend wherever Visa is accepted around the world, subject to eligibility and applicable limits.
Which chains can I swap BUILDon into?
Swap into assets across 20+ chains including Ethereum, Solana, Polygon, Arbitrum, Optimism, BNB Chain and TRON, across 1,000,000+ cross-chain routes. All in-app, all in two taps.
How do I back up my BUILDon wallet?
During setup, Zypto App generates a 12-word recovery phrase. Write it down and store it offline somewhere safe. For offline hardware wallet security, pair Zypto App with a Vault Key Card, the card-based cold-wallet hardware that signs transactions over NFC without exposing your keys to the internet.
Is Zypto App available in my country?
The wallet itself is available globally on iOS, Android and web. Some features (in-app buying, the Zypto Premium Visa Card) vary by region. See what's available where you are on our <a href="/spend-crypto/">Spend by Country</a> page.
Is Zypto App free?
The app is free to download and use. Standard network fees apply to on-chain transactions. Card and bill-pay services carry transparent transaction fees published in the app.
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