Overview
Rabby is an open-source, multi-chain wallet built by DeBank that shows you exactly what a transaction will do before you sign it — a real safety upgrade for DeFi users.
Rabby was designed to fix MetaMask's rough edges for active DeFi users: it auto-detects the right network, simulates transactions to reveal their real effect, and flags risky approvals. It's a favourite among experienced on-chain users who want extra guardrails.
Key features
- Pre-sign transaction simulation showing balance changes
- Automatic network detection across many chains
- Clear risk warnings on suspicious approvals
- Open source, with a smooth multi-chain UX
Specs & compatibility
Free to download and use; you pay only network fees. It's EVM-focused and works with the same dApps as MetaMask, often more smoothly. It also supports connecting a hardware wallet.
Security & trust
Rabby's headline security benefit is transparency: by simulating a transaction before you sign, it helps you avoid draining approvals and malicious contracts — a leading cause of DeFi losses. It's still a hot wallet, so device security and seed-phrase secrecy remain essential.
Pros & cons
👍 Pros
- Pre-transaction risk warnings
- Multi-chain by default
- Open source
- Smoother DeFi UX than MetaMask
👎 Cons
- Fewer users and integrations than MetaMask
- Hot wallet — online exposure
- Aimed more at experienced DeFi users
Who it's for
✅ Good fit if…
DeFi users who want extra safety checks and a smoother multi-chain experience.
⛔ Look elsewhere if…
Absolute beginners who don't yet interact with DeFi contracts.
Frequently asked questions
Is Rabby safe?
Rabby's headline security benefit is transparency: by simulating a transaction before you sign, it helps you avoid draining approvals and malicious contracts — a leading cause of DeFi losses. It's still a hot wallet, so device security and seed-phrase secrecy remain essential.
How much does Rabby cost?
Rabby is free to download; you only pay network and swap fees.
Who is Rabby best for?
DeFi users who want extra safety checks and a smoother multi-chain experience.
Verdict
Bottom line. MetaMask's safety-focused challenger — well worth trying if you sign a lot of on-chain transactions and want fewer nasty surprises.