The best mobile Bitcoin wallet
of all time
Focused on privacy, security and usability for day-to-day Bitcoin transactions.
Start using GrimmApp
Wallet Features
Many said it couldn't be done, but we've achieved our impossible dream: the perfect Bitcoin wallet, for anyone.
Instant and cheap lightning payments
Lightning payments without liquidity and channel management. Send and receive payments seamlessly with one click.
Automatic cross-network swaps
Seamlessly move funds between Bitcoin, Lightning, and Liquid networks using non-custodial atomic swaps.
Confidential transactions
Enhanced privacy features to protect your financial information and transaction details.
Smart fee management
Customizable mempool-based fee calculations and RBF technologies ensure you never overpay mining fees.
Easy and secure encrypted cloud backup
Secure your wallet with encrypted cloud backups that protect your funds while ensuring easy recovery.
Watch-only hardware wallets
Receive to any offline wallet, monitor balances and transaction history of your hardware wallets.
Suitable for beginners and experts alike.
I built this wallet so that it would offer all the advanced features I want, but also that my mom could use it without being confused.
Multi-network compatibility
Transact seamlessly on the Bitcoin Network, Lightning Network and Liquid Network. Using non-custodial atomic-swap technologies, you can move funds between networks anonymously and securely.
Native integration with the Grimm App exchange
Connect your Grimm App account to buy bitcoin, sell bitcoin and make flat payments directly with your self-custodial wallet. This is optional, and you don't have to link an account if you don't want to. It's so easy, it feels like using a custodial app!
Frequently Asked Questions
Everything you need to know about Grimm App
What is a self-custodial wallet?
A self-custodial wallet is a type of wallet where you have full control and ownership of your private keys. This means you are the only one with access to your funds, without relying on a third party. It's crucial to securely back up your private keys to avoid losing access to your Bitcoin.
Can I buy and sell Bitcoin directly through the app?
Yes! Our app allows you to buy and sell Bitcoin directly, provided you complete a Know Your Customer (KYC) identity verification process. This ensures compliance with local regulations and the security of your transactions.
Is my personal information secure?
Absolutely! We prioritize the privacy and security of your data. All personal information is securely stored and never shared with third parties without your explicit consent.
Engineering Sovereignty
We build the tools and infrastructure you deserve to buy, sell, hold, and spend Bitcoin without compromise.