Frequently asked questions
Quick, honest answers. If you do not see yours, contact us. We will help.
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What is Blitz Wallet?
Blitz is a self-custodial wallet for everyday payments on mobile and web. Pay contacts, send gifts, collect money with Pools, create payment links, swap to USDB, or accept payments as a merchant.
Is Blitz self-custodial?
Yes. Your 12-word backup generates your keys on your device. Neither Blitz nor Spark can move your funds. Back up the words on paper. See how self-custody works.
Is it free?
The app is free. However some supported payment types have a small fee associated with thenm.
Which devices work?
iOS (App Store), Android (Play Store + Zapstore), and any browser via wallet.blitzwalletapp.com. Same wallet logic everywhere. Download options.
How paying works
What is Spark & Lightning?
Lightning is Bitcoin’s instant Layer 2. Spark is a newer Bitcoin Layer 2 by Lightspark using statechains + FROST signatures that makes Lightning easy: no channel management, offline receive, under-a-second settlement.
Can I pay any Lightning QR?
Yes. One scanner handles BOLT11, LNURL, Lightning addresses,
on-chain invoices, and Spark invoices. You can also receive at
you@blitzwalletapp.com.
What are Gifts, Pools and Paylinks?
Gifts = send via a shareable link that the recipient claims in Blitz. Pools = collect as a group with one shared link. Paylinks = payment links that anyone can pay from any compatible Lightning wallet or with USDT/USDC. The product adds no extra gift or Pool fee, but the underlying payment or network fee still applies.
Do I need the recipient’s invoice?
Not for Blitz contacts. Pick a name and send. For other people, use their Lightning address or scan their QR code or invoice.
Can I get paid while offline?
Yes nothing stops you from receiving your money.
Bitcoin & dollars, same wallet
What is USDB?
USDB is a dollar-pegged stablecoin on Spark issued by Brale, backed 1:1 by Treasury bills and cash equivalents. Hold 10 or more USDB to earn up to 6% back, paid daily in BTC. Program terms can change, so check the app. Stablecoins carry issuer and platform risk. USDB details.
Can I use USDT & USDC?
Yes. Receive USDC or USDT via accumulation addresses on 9 supported networks: Arbitrum, Base, BNB Chain, Ethereum, Optimism, Plasma, Polygon, Solana, and Tron. Blitz can auto-convert to BTC or USDB. Swap inside Blitz via Flashnet.
Why dollars on Bitcoin?
Some people have a hard time with Bitcoin's short-term volatility. Dollars can make everyday spending more stable. Hold USDB for spending and Bitcoin for savings, then swap between them in seconds.
Is there a fee to hold dollars?
No holding fee. Small swap fees apply. Hold 10 or more USDB to earn up to 6% back, paid daily in BTC. Program terms can change, so check the app. Stablecoins carry issuer and platform risk.
Keep control
What if I lose my phone?
Restore with your 12 words in Blitz or the open-source recovery tool. Funds return. Lose the words = lose the funds.
Is Blitz open-source?
Yes. Apache 2.0 at GitHub.
Do merchants pay more?
No monthly fee for Point of Sale. Same low fees as personal payments. POS details.
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