Katana DEX: How Ronin’s Exchange Works, Fees and V3
Katana DEX is the decentralized exchange on the Ronin blockchain, built by Sky Mavis and launched on November 4, 2021. You use it at app.roninchain.com/swap with a Ronin Wallet to swap tokens such as RON, AXS, SLP, WETH and USDC, or to earn fees by providing liquidity. Most pools charge 0.3% per swap. This guide was checked against Ronin’s documentation and DefiLlama data in October 2026.
Key takeaways
- Katana DEX runs on Ronin and is reached through the Ronin app at app.roninchain.com/swap. It is not the same thing as Katana Network, the Ethereum Layer-2 with the KAT token.
- Two versions run side by side. Katana V2 uses classic 50/50 pools. Katana V3, live since December 2, 2024, adds concentrated liquidity and three fee tiers.
- Swap fees are 0.01%, 0.3% or 1% depending on the pool. Part goes to liquidity providers and part to the Ronin Treasury.
- Ronin became an Ethereum Layer-2 in May 2026. Ronin said the migration would not affect liquidity pools on Katana.
- DefiLlama showed about $11.8 million locked across Katana V2 and V3 on October 7, 2026.
What is Katana DEX?
Katana is an automated market maker, or AMM. Instead of matching buyers with sellers, it lets you trade against pools of tokens that other users have deposited. Prices move as the balance of each pool changes.
Ronin’s documentation describes Katana as “a decentralized exchange (DEX) for trading tokens within the Ronin ecosystem”. Sky Mavis, the studio behind Axie Infinity, built it so players could swap game tokens without leaving Ronin. For background on the chain itself, see our beginner’s guide to Ronin Network.
At launch in November 2021 Katana supported four tokens: AXS, SLP, USDC and WETH. Sky Mavis also ran a 90-day rewards programme that set aside 10% of the RON supply for liquidity providers in the AXS/ETH and SLP/ETH pools.
Is Katana DEX the same as Katana Network?
No. The two share a name and nothing else.
| Katana DEX | Katana Network | |
|---|---|---|
| What it is | A decentralized exchange | An Ethereum Layer-2 blockchain |
| Runs on | Ronin | Its own chain, chain ID 747474 |
| Built by | Sky Mavis | Katana Foundation, incubated by Polygon Labs and GSR |
| Main token | RON pays the gas | KAT |
| Official app | app.roninchain.com/swap | app.katana.network |
If you searched for “Katana crypto” or “Katana DeFi” and wanted the KAT chain, start with what Katana Network is. Our Katana overview covers every project that uses the name.
What is the official Katana DEX website?
The official address is app.roninchain.com/swap. Katana no longer has a separate domain of its own. It lives inside the Ronin app, next to the Liquidity page at app.roninchain.com/liquidity.
Katana.so is an independent guide. We are not Sky Mavis or Ronin, and you cannot swap tokens on this site. Type the Ronin address yourself or use a bookmark. Phishing copies of DeFi apps are common, and a fake swap page can ask your wallet for approvals that drain it.
How does Katana DEX work?
Every swap goes through one or more liquidity pools. By default Katana uses an Aggregator, its smart order router, which checks both V2 and V3 pools and picks the route with the best price. You can switch to “Legacy” routing in Transaction Settings.
Before you confirm, Katana shows:
- Rate: the exchange rate between the two tokens.
- Price impact: how much your own order moves the price.
- Max. slippage: the largest price movement you will accept.
- Minimum receive: the lowest amount you can get at that slippage setting.
- Liquidity provider fee: the share of the fee paid to the pool.
- Route: the path of the trade, direct or through another token.
Katana also sorts tokens into two groups. “Main” tokens are verified and have deeper liquidity. “Seed” tokens are experimental and carry more risk. They are marked with a plant icon.
What fees does Katana DEX charge?
Katana V2 charges a flat 0.3% on every swap: 0.25% to liquidity providers and 0.05% to the Ronin Treasury. That split has not changed since launch.
Katana V3 has three fee tiers, chosen per pool:
| Fee tier | To liquidity providers | To Ronin Treasury | Meant for |
|---|---|---|---|
| 0.01% | 0.005% | 0.005% | Stablecoin pairs |
| 0.3% | 0.25% | 0.05% | Most trading pairs |
| 1% | 0.85% | 0.15% | High-volatility pairs |
Two more costs apply. You pay Ronin gas in RON for each transaction. And if you swap from inside the Ronin Wallet itself, Ronin’s docs say the wallet swap adds a 0.5% development fee to the output token. Swapping on the web app avoids that extra fee.
What is the difference between Katana V2 and V3?
Katana V3 went live on December 2, 2024. Ronin kept V2 running, so liquidity providers can choose either version.
| Katana V2 | Katana V3 | |
|---|---|---|
| Liquidity | Spread across the full price range | Concentrated in a price range you set |
| Fees | 0.3% only | 0.01%, 0.3% or 1% |
| Your position | Fungible LP tokens | An NFT tied to your price range |
| Fee earnings | Added to the pool automatically | Claimed separately, not reinvested |
| If price leaves your range | Not applicable | You stop earning fees and hold only one token |
V3 is more capital efficient. The same deposit can earn more fees when the price stays inside your range. It also takes more attention, because an out-of-range position earns nothing.
How do I swap tokens on Katana DEX?
- Go to app.roninchain.com/swap and connect your Ronin Wallet.
- Choose the token you are swapping from and the token you want.
- Enter an amount in either box. Katana fills in the other side.
- Expand the rate box to check price impact, slippage and the route.
- Click Swap, review the confirmation window, then click Confirm Swap.
- Approve the transaction in your wallet.
You need a little RON for gas. Our guide on how to buy RON covers where to get it, and the Katana swap walkthrough goes through each screen in more detail.
How do I provide liquidity on Katana?
Open the Liquidity page and pick the V2 Pools or V3 Pools tab.
- V2: open a pool, enter an amount of one token, and Katana calculates the matching amount of the other. You receive LP tokens for your share of the pool.
- V3: open a pool, choose a fee tier, set a price range, then enter your amounts. Katana shows a capital efficiency figure for the range you picked.
Anyone can create a pool from existing tokens. Teams that want to pool their own new token need Sky Mavis to review and whitelist it first.
Ronin’s docs are direct about the risk: “earning a profit through providing liquidity isn’t guaranteed. You may face what’s known as impermanent loss”. Impermanent loss is the gap between holding two tokens in a pool and simply holding them in your wallet when their prices drift apart. Read our step-by-step liquidity guide before you deposit.
How big is Katana DEX in 2026?
Katana is far smaller than it was during the Axie Infinity boom, when it held more than $1 billion within days of launching. These are the DefiLlama figures on October 7, 2026:
| Katana V2 | Katana V3 | |
|---|---|---|
| Total value locked | $10.0 million | $1.8 million |
| 24-hour volume | $457,000 | $219,000 |
| 30-day volume | $12.7 million | $6.4 million |
| All-time volume | $13.7 billion | $788 million |
Lower liquidity means larger orders move the price more. Check the price impact line on every trade, and split big swaps if the number looks high.
What changed when Ronin became an Ethereum Layer-2?
In May 2026 Ronin moved from a standalone chain to an OP Stack Layer-2 on Ethereum. In its “Ronin is Home” announcement on May 13, 2026, Ronin said: “The migration will not affect liquidity pools on Katana.”
- RON is still the gas token.
- RON emissions fell from 45 million to 5 million RON a year.
- There is currently no way to stake RON for rewards. Rewards now go to builders.
So older guides that pair Katana with RON staking are out of date. Swaps and liquidity pools work as before. For the token side, see RON price and supply today.
Common mistakes to avoid
- Using a link from an ad or a direct message. Go to app.roninchain.com yourself.
- Confusing Katana DEX with Katana Network and sending funds to the wrong chain.
- Swapping seed tokens without checking liquidity and price impact first.
- Setting a V3 range and never looking at it again.
- Keeping zero RON in the wallet, which leaves you unable to pay gas.
Wallet safety matters more than any setting on the exchange. Our checklist to secure your Ronin Wallet takes five minutes.
Frequently asked questions
What is Katana DEX?
Katana DEX is the decentralized exchange on the Ronin blockchain. Sky Mavis launched it on November 4, 2021 so users could swap tokens such as AXS, SLP, RON, WETH and USDC without leaving Ronin.
What is the official Katana DEX website?
The official Katana DEX address is app.roninchain.com/swap, inside the Ronin app. Katana.so is an independent guide and is not operated by Sky Mavis or Ronin.
What are the fees on Katana DEX?
Katana V2 charges 0.3% per swap, split 0.25% to liquidity providers and 0.05% to the Ronin Treasury. Katana V3 pools charge 0.01%, 0.3% or 1%. You also pay Ronin gas in RON.
Is Katana DEX the same as Katana Network?
No. Katana DEX is an exchange on Ronin built by Sky Mavis. Katana Network is a separate Ethereum Layer-2 with the KAT token, with its own app at app.katana.network.
Which wallet do I need for Katana DEX?
Ronin’s documentation tells users to connect a Ronin Wallet. You also need a small amount of RON in it to pay gas.
Is Katana DEX still running after Ronin’s move to Ethereum?
Yes. Ronin became an Ethereum Layer-2 in May 2026 and stated that the migration would not affect liquidity pools on Katana. Both Katana V2 and V3 show active volume on DefiLlama in October 2026.
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