ZAMM Review: Is This DEX Aggregator Worth Using?
ZAMM is an onchain DEX aggregator for Ethereum and Base, with routes through several exchanges. Its no-fee and gas-saving claims are worth checking against the quote before you sign.
By the SkyBitcoins review team · Updated
Quick take
ZAMM may suit experienced Ethereum and Base users who want one onchain interface to compare routes across several DEXs. Its main draw is its advertised no-fee swaps and claimed calldata-related gas savings. Before signing, compare the quote and gas cost with alternatives, check the token and network, and remember that no audits are listed.
Ratings
How ZAMM rates
- Trust
- 3.0/10
- Track record, licensing, audits and how your funds are held.
- Value
- 6.0/10
- Fees, odds, rewards and bonuses: what you get for your money.
- Usability
- 5.0/10
- How easy it is to sign up, deposit, play or trade, and withdraw.
- Transparency
- 3.0/10
- How clearly the team, terms, fees and risks are disclosed.
Ratings run from 0 to 10 and use only facts we could check. Where the information isn't public we show n/a instead of guessing.
At a glance
ZAMM key facts
| Type | Onchain DEX aggregator |
|---|---|
| Networks | Ethereum and Base |
| Ethereum routes | Uniswap, Curve, Sushi and zAMM |
| Base routes | Uniswap, Aerodrome and zAMM |
| Fees | Advertises no fees; gas still applies |
| Audits | No audits listed |
| Value locked | $63.0K−0.8% 7d |
| Updated |
Is it for you?
Who ZAMM suits
Good for
- Ethereum users comparing routes across Uniswap, Curve, Sushi and zAMM
- Base users looking for routes through Uniswap, Aerodrome and zAMM
- Experienced wallet users who can review an onchain quote before signing
Not for
- People who require a published smart-contract audit before using a service
- Beginners who cannot check wallet permissions, network selection and transaction details
- Anyone looking for a published fee schedule or named wallet compatibility information
What can you swap through ZAMM?
ZAMM is an onchain DEX aggregator: it aims to route swaps through existing decentralized exchanges rather than operate as a centralized trading venue. Its Ethereum routes include Uniswap, Curve, Sushi and zAMM. On Base, the listed routes include Uniswap, Aerodrome and zAMM. That gives you a way to seek a route across multiple venues from one interface, though the best available price can vary with liquidity and network conditions.
The project calls itself a 100% onchain DEX solver and promotes its routing as offering the best rates. Those are product claims, not a guarantee that every swap will beat using a DEX directly. Check the quoted output, price impact and transaction details before approving. A route can involve more than one contract, so focus on what the wallet asks you to approve and execute rather than relying on a headline rate.
What will a ZAMM swap cost you?
ZAMM advertises swaps with no fees, which could make it attractive if the quote is competitive. However, it does not publish a detailed fee schedule explaining whether any costs can vary by route or transaction. You should treat the quote shown for your specific swap as the practical check, and compare it with the same trade elsewhere before approving.
“No fees” does not mean a transaction is free. You still pay gas on Ethereum or Base, and the amount can change with network demand and the complexity of the swap. ZAMM also says its calldata compression can save 50% on gas. That figure is a claim, not a guaranteed saving for each transaction. Check the wallet's gas estimate and the amount you will receive after costs; cancel if the final result is worse than expected.
How much trust should you place in ZAMM?
ZAMM describes its swaps as onchain, so transactions are executed through blockchain contracts rather than handled as an offchain exchange order. That does not remove smart-contract risk: a bug, exploit or malicious approval could put your assets at risk. No audits are listed for ZAMM, and it does not publish a licence or a detailed security record. Those gaps make it difficult to assess the service as a place to trust with significant funds.
Use a wallet you control, review each approval and transaction, and avoid granting permissions you do not understand. Start with a small amount if you decide to try it. Confirm the token contract and chain independently before swapping, especially when a token has lookalike names. Never sign a transaction just because a quote or interface describes it as low-cost or onchain.
What should you check before connecting a wallet?
To use ZAMM, you will need a compatible wallet, the asset you want to swap, and the native token needed to pay gas on the chosen network. Select Ethereum or Base, connect your wallet, choose the tokens and review the quote. Check the network shown in your wallet matches the network selected in the app; an otherwise valid transaction on the wrong chain will not do what you intend.
Wallet names, mobile support and typical transaction speeds are not published. You should therefore confirm that your wallet works with the interface before moving funds, and rely on your wallet's own transaction prompt to inspect approvals and gas. Blockchain confirmation times vary with the network, so do not assume a fixed completion time. If anything in the transaction differs from the swap you intended, reject it.
Where does ZAMM fall short?
The main trade-off is a promising but lightly documented service. ZAMM lists routes on Ethereum and Base and advertises no fees, but it does not publish a full fee schedule, audit reports, licence details, named team information or a detailed record of how it handles incidents. Wallet support and mobile usability also need confirmation before you rely on it.
That leaves you with limited independent ways to assess reliability beyond the onchain transaction itself. Compare the route and final output against other DEX options, and do not assume an aggregator always finds the best price. If you need audited contracts, transparent operating details or customer support with clear published terms, choose a better-documented alternative. ZAMM is best approached as a tool to test cautiously, not as a default place to keep funds.
5 steps
How to start with ZAMM
- 1
Open ZAMM and confirm the interface is set to Ethereum or Base, whichever you intend to use.
- 2
Connect a wallet you control, with only the funds needed for the swap and network gas.
- 3
Select the tokens and inspect the quoted output, route, approvals and estimated gas.
- 4
Compare the quote with another DEX option; start with a small swap if you proceed.
- 5
Reject any wallet prompt that requests an unexpected approval or differs from your intended transaction.
ZAMM FAQs
Does ZAMM charge swap fees?
ZAMM advertises no fees, but it does not publish a detailed fee schedule. You will still need to pay network gas, and the final transaction quote is the best place to check the total cost before signing.
Which chains and exchanges does ZAMM support?
ZAMM supports Ethereum and Base. Its Ethereum swap page lists Uniswap, Curve, Sushi and zAMM routes; its Base page lists Uniswap, Aerodrome and zAMM.
Is ZAMM safe to use?
ZAMM describes its swaps as onchain, but that alone does not establish that its contracts are safe. No audits are listed, so consider smart-contract risk and avoid swapping more than you can afford to lose.
Can ZAMM really save 50% on gas?
ZAMM says it compresses calldata to save 50% on gas. Treat that as a project claim, not a guaranteed saving: gas varies with network conditions and the transaction you make.
Compare
ZAMM alternatives
MetaMask Swap offers in-wallet token routing for self-custody users, but check each quote, gas estimate and approval before trading.
1inch aggregates DeFi swap routes across 18+ networks, but check the quote and wallet approval because fees and security disclosures are limited.
3Route aggregates Tezos DEX swaps and offers a $0.001-per-call multichain API, but check transaction details and audit scope before signing.
Fibrous splits non-custodial swaps across DEX liquidity, with published app fees but no published audit or licensing details.
Matcha combines wallet-based swaps, limit orders and bridging across 19 chains, but check route costs and transaction details before signing.
CoW Swap offers wallet-based token swaps with batch auctions, but check each quote and approval because fees and audit status are unclear.
Same category
More Dex Aggregators
Jupiter routes Solana token swaps across decentralized exchanges, but check each quote and wallet approval before you trade.
DZap connects DeFi swaps, bridges and other workflows, but check route-specific costs, approvals and asset handling before signing.
Houdini Swap aggregates cross-chain trades and offers privacy-focused routes, but check partner involvement, costs and trust limits first.
Jupiter aggregates Solana swap routes, but check the quote, token and transaction costs before signing.
Chainspot aggregates cross-chain swaps and yield access, but unclear fees and custody details mean you should inspect every route before signing.
PulseSwap compares swap routes across multiple chains, but its fee schedule and audit status are not published.
Same chain
More on Ethereum
Lido turns staked ETH into liquid stETH, but variable rewards, a 10% reward fee and withdrawal and contract risks need checking.
Bitvavo offers euro funding, 400+ crypto assets and Pro Mode, but check withdrawal terms and the separate risks of staking and leverage.
Aave offers open crypto lending and borrowing, but variable rates, gas costs and liquidation risk make it best for informed DeFi users.
Aave V3 offers non-custodial lending and collateralised borrowing, but rates vary and deposits remain exposed to DeFi and liquidation risks.
GetBlock suits teams needing multi-chain RPC and data services, but check usage billing, coverage and SLA terms before relying on it in production.
Uniswap offers wallet-based swaps and liquidity pools across 15+ networks, but pool fees, gas and self-custody risks still matter.
How we checked
Sources
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