The simple way to swap tokens on Base
A non-custodial wallet and token swap for the Base network. No account, no custody, no middlemen.
Actual screenshot from the app
Everything you need, nothing you don't
A focused wallet that keeps you in control and makes swapping on Base effortless.
Non-custodial
Your keys and recovery phrase never leave your device. We never hold your funds, ever.
Built for Base
Made for one network and nothing else. Fast confirmations and low fees, every swap.
Simple swaps
Pick two tokens, enter an amount, swap. The best rate is found across multiple exchanges for you.
Self-custody security
Encrypted on-device with a password you control. No account, no sign-up, no tracking.
How it works
From zero to your first swap in under a minute.
Create or import
Generate a new wallet or import your recovery phrase.
Choose tokens
Select what you have and what you want on Base.
Review
See the rate, fees and slippage before you confirm.
Swap
Sign on-device and the swap settles on-chain.
Insights
Guides and updates on Base and tokens.
Why bridging carries different risks than swapping on Base
4 min read
A swap and a bridge can look like the same click, but they rely on very different trust assumptions. Here is what actually happens when you move assets between chains, and why it deserves extra caution.
Base fee, priority fee, and the L1 data fee: what you are really paying for
5 min read
A Base transaction fee is not one number, it is three. Here is what the base fee, the priority fee, and the L1 data fee each pay for, and why one of them moves with Ethereum, not Base.
NFTs on Base Explained: What They Are and How Your Wallet Handles Them
5 min read
A plain language guide to what NFTs actually are, how the ERC-721 and ERC-1155 standards work, and what to check before you mint, buy, or hold one in a self custody wallet on Base.
FAQ
Is Simple Base Swap custodial?+
No. It is fully non-custodial. Your private keys are generated and stored only on your device, encrypted with your password, and you sign every transaction yourself. We could not touch your funds even if we wanted to.
Do I need an account?+
No account, email or sign-up. You create or import a wallet and you are ready to go. We do not run analytics or trackers in the app either.
What does it cost?+
The app is free. When you swap, a 0.7% service fee is included in the displayed rate, and the exchange provider (0x) charges roughly 0.15% on the output amount. The rate you see on the review screen is the rate you get. Sending and receiving only cost the normal Base network fee, usually under a cent.
Which tokens can I swap?+
Any token that exists on the Base network. Popular tokens are listed out of the box, and you can add any other token by pasting its contract address.
How do I get funds into the wallet?+
Send ETH or any Base token to your address from an exchange that supports withdrawals on the Base network, or bridge from another network. The Receive screen shows your address and a QR code.
What if I lose my recovery phrase?+
Nobody can restore it for you, including us. That is the trade-off of self-custody: full control, full responsibility. Write the phrase down when you create the wallet and keep it offline in a safe place.
Is the same wallet available on my phone and in the browser?+
Yes. The web app, iOS app and Android app all use the same standards (BIP-39 and BIP-44), so one recovery phrase opens the same wallet everywhere. The same phrase also works in MetaMask and other standard wallets.
Why only Base?+
Because doing one thing well beats doing ten things halfway. A single network means no wrong-network mistakes, no confusing chain switching, and an interface that stays simple. Base is fast, cheap and backed by a large ecosystem.