I Deployed on Base Arbitrum and Optimism - Here Is Why 80% of My Users Ended Up on Base

[ethereum_emma]

A Real-World Deployment Story Across Three L2s

Last year, I built a DeFi savings app — think “put your stablecoins to work” with a clean UI aimed at people who’ve never touched DeFi. We launched on Base, Arbitrum, and Optimism simultaneously with identical smart contracts, identical features, and roughly equal marketing spend across all three.

Six months later, here are the results:

The Numbers

Metric	Base	Arbitrum	Optimism
Total users	14,200	2,800	1,100
Monthly active	8,400	1,200	380
TVL deposited	$4.2M	$1.8M	$340K
Avg. deposit	$296	$642	$309
New wallet users	62%	8%	11%
Came via Coinbase	71%	0%	0%

The story these numbers tell is stark: Base didn’t just win — it won because it brought in a completely different user base.

What “Came Via Coinbase” Actually Means

71% of our Base users arrived through Coinbase’s ecosystem. This includes:

• Users who saw our app in the Coinbase Wallet dApp browser
• Users who followed a link that opened in Coinbase Smart Wallet
• Users whose first on-chain transaction ever was on Base via Coinbase

These aren’t people who were browsing DefiLlama looking for the best APY across L2s. These are Coinbase customers who discovered DeFi through Base’s integrated experience.

By contrast, our Arbitrum and Optimism users were almost entirely existing crypto users who bridged from L1 or other chains. Experienced, higher average deposits, but a much smaller addressable market.

The UX Gap Is Enormous

Let me walk through the user journey difference:

Base (via Coinbase):

1. User has Coinbase app with USDC
2. Taps “Explore” → sees our app
3. One tap to create a Smart Wallet (no seed phrase)
4. Deposits USDC — gas is sponsored via paymaster
5. Total time: ~90 seconds, zero crypto knowledge required

Arbitrum:

1. User needs a wallet (MetaMask, etc.)
2. User needs ETH for gas on Arbitrum
3. User needs to bridge USDC from L1 or another chain
4. User needs to approve + deposit
5. Total time: ~15 minutes, significant crypto knowledge required

This isn’t a marginal difference. It’s the difference between a product that normal humans can use and one that only crypto-native users can navigate.

The Developer Experience Factor

Beyond users, the developer tooling made a real difference:

• Coinbase Smart Wallet SDK: Handled wallet creation, gas sponsorship, and session keys out of the box. Saved me probably 3 weeks of development time.
• Base Paymaster: Free gas sponsorship for the first N transactions made our conversion rate dramatically higher on Base.
• Coinbase Commerce integration: Users could buy USDC directly in-app without leaving our flow.

On Arbitrum and Optimism, I had to build or integrate all of this from third-party providers. It worked, but it was more work and the UX was never as smooth.

My Honest Take

Am I worried about Base lock-in? Yes. My app is increasingly dependent on Coinbase-specific infrastructure, and migrating would be painful.

Am I going to stop building on Base? No. Because my goal is to get DeFi into the hands of regular people, and right now, Base is the only L2 that’s actually doing that at scale.

The philosophical debate about decentralization matters. But so does the practical reality that 14,200 people are using my app on Base versus 1,100 on Optimism. Those 14,200 people are real humans saving real money — and most of them would never have touched DeFi without Base’s Coinbase integration.

Has anyone else seen similar deployment patterns? I’m curious whether this is specific to consumer apps or if it holds for DeFi infrastructure too.

[layer2_lisa]

Emma, this is exactly the kind of data the L2 discourse needs — real deployment numbers instead of theoretical arguments.

Deconstructing the Base Advantage

Your numbers reveal something important: the 5:1 user ratio between Base and Arbitrum isn’t because Base has better rollup technology. The OP Stack and Arbitrum’s Nitro are roughly comparable in terms of throughput, fees, and finality. The difference is entirely in the application layer and distribution channel.

Let me break down what’s actually driving this from a technical infrastructure perspective:

The Smart Wallet Effect

Your 62% “new wallet users” stat on Base is the key metric. These are people who did NOT have a self-custodial wallet before using your app. The Coinbase Smart Wallet creates an account-abstracted wallet with passkey authentication — no seed phrase, no extension, no concept of “gas.”

From a technical standpoint, Base + Smart Wallet is doing something no other L2 has achieved: eliminating the wallet creation step entirely. The user doesn’t know they have a wallet. They just… use the app.

Arbitrum and Optimism both support ERC-4337 and smart wallets, but they don’t have a distribution channel that feeds users into that flow. The technology is available — the funnel isn’t.

The Paymaster Subsidy

Your mention of sponsored gas is crucial. Base’s paymaster effectively subsidizes transaction fees for new users. This isn’t technically unique — any L2 can run a paymaster. But Coinbase has the balance sheet to subsidize millions of transactions, which most L2 ecosystems cannot match.

This is the AWS playbook: subsidize costs to build adoption, then extract revenue once lock-in is established. It works, but builders should be eyes-open about the long-term economics.

What This Means for L2 Competition

Your data suggests that L2 competition isn’t about rollup technology anymore — it’s about distribution and onboarding UX. The chains that solve the “first transaction” problem will win, and right now, only Base has a credible solution for non-crypto-native users.

Arbitrum is trying to address this with their Orbit ecosystem and partnerships with traditional gaming companies. Optimism is leveraging the Superchain for cross-chain discoverability. But neither has a 9.3M-user app store feeding users directly into their ecosystem.

The uncomfortable truth: if you’re building consumer-facing DeFi in 2026, Base is the rational choice. The decentralization trade-offs are real, but the alternative is building for an audience that doesn’t exist yet on other L2s.

[startup_steve]

Emma’s deployment data is like a startup case study in platform dependency, and it mirrors patterns I’ve seen across every industry.

The Platform Dependency Trap

The 71% “came via Coinbase” stat is both impressive and terrifying. Let me tell you why from a business strategy perspective.

Phase 1 — Platform subsidizes growth: Coinbase gives you free gas (paymaster), free distribution (dApp browser), free user acquisition (Smart Wallet onboarding). Your cost per user on Base is nearly zero. This is incredible for a startup.

Phase 2 — Platform becomes essential: 71% of your users come through Coinbase. Your app’s growth is now a function of Coinbase’s growth. If Coinbase changes their dApp browser algorithm, updates their wallet SDK, or modifies their paymaster terms, your business is directly impacted.

Phase 3 — Platform extracts value: This hasn’t happened yet with Base, but it will. Every platform in history has eventually monetized its distribution advantage. App Store commissions. AWS pricing. Facebook’s organic reach throttling.

The question isn’t whether Coinbase will eventually extract more value from Base ecosystem apps — it’s when and how.

The Counter-Argument (Which I Believe)

All that said, I’m building on Base too. Here’s why:

Your alternative is zero users, not “decentralized users.” Emma’s data shows 14,200 users on Base vs 1,100 on Optimism. The choice isn’t between 14,200 centralized users and 14,200 decentralized users. It’s between 14,200 users and 1,100 users.

For an early-stage startup, 14,200 users means product-market fit data, revenue, and survival. 1,100 users means you run out of runway trying to grow.

The Practical Mitigation Strategy

What I tell every founder deploying on Base:

1. Keep your contracts chain-agnostic: Use standard ERC-20, avoid Base-specific precompiles
2. Abstract your wallet integration: Use a wallet abstraction layer so you can swap out Coinbase Smart Wallet for another wallet SDK later
3. Build on multiple chains from day one: Even if 80% of users are on Base, maintain deployments elsewhere. The marginal cost is low and it preserves optionality
4. Don’t depend on paymasters for unit economics: If free gas goes away, your business model should still work

Platform dependency is a business risk, not a dealbreaker. You just need to manage it like any other risk — with hedging and optionality.

[defi_diana]

Emma’s deployment data tells a DeFi-specific story that I want to zoom into: the liquidity concentration effect.

The Liquidity Flywheel

Your TVL numbers ($4.2M on Base vs $1.8M on Arbitrum vs $340K on Optimism) reveal the core DeFi dynamic: liquidity attracts liquidity.

Here’s why your Base deployment outperformed in TVL by an even wider margin than the user count suggests:

1. Deeper underlying liquidity pools: With $5B+ in total TVL on Base, your savings app has access to deeper lending markets, more yield sources, and better rates. Users get better APY on Base because there’s more liquidity to work with.

2. USDC native advantage: Circle mints USDC natively on Base. On Arbitrum, much of the USDC is still bridged (USDC.e). Native USDC is more composable, has no bridge risk, and integrates more cleanly with Coinbase’s on-ramp. For a savings app, this matters — users bring USDC directly from Coinbase without touching a bridge.

3. Morpho’s Base dominance: You mentioned Coinbase users applying for $866M in Morpho loans on Base. Morpho’s TVL on Base grew 1,906% year-to-date. This kind of lending depth creates yield opportunities that smaller ecosystems can’t match.

The DeFi Composability Question

What concerns me about Base’s DeFi concentration isn’t the current state — it’s the trajectory. When 47% of L2 TVL and the deepest lending markets are on a single chain:

• Protocol dependencies increase: If your yield source is a Morpho vault on Base, and that vault sources from Aave on Base, you have a single-chain dependency stack
• Systemic risk concentrates: A Base-specific exploit (sequencer bug, upgrade gone wrong) affects a disproportionate share of total DeFi
• Innovation slows: When all the liquidity is on one chain, there’s less incentive to innovate on other chains — which reduces the competitive pressure that drives DeFi forward

I build DeFi protocols, and I deploy on Base because that’s where the liquidity is. But I also maintain Arbitrum and Ethereum mainnet deployments specifically because liquidity concentration risk is real.

Emma, your data confirms what the macro TVL numbers suggest: Base isn’t just winning users — it’s winning liquidity. And in DeFi, liquidity IS the product.

[crypto_chris]

The liquidity data here is what I find most interesting from a trading perspective. Let me add the market structure view.

Following the Smart Money

Emma’s deployment data shows higher average deposits on Arbitrum ($642) vs Base ($296). This pattern is consistent across the L2 landscape and reveals something important about who’s using each chain:

Base: Higher user count, lower average size → Retail-dominated, Coinbase-onboarded users
Arbitrum: Lower user count, higher average size → More experienced DeFi users, larger capital

For trading and market-making, this distinction matters enormously:

• Base’s retail flow creates consistent, predictable volume but with smaller trade sizes
• Arbitrum’s experienced user base creates larger trades with more sophisticated strategies (and more MEV opportunity)

The Volume Story

What Emma’s app data doesn’t show (but the aggregate data does) is that Base’s transaction volume has exploded. Daily transactions on Base routinely exceed 10M, dwarfing Arbitrum’s 2-3M. But much of Base’s volume is from social apps (Farcaster), NFT mints (Zora), and small-value DeFi transactions — not the institutional-grade trading that generates the deepest liquidity.

Arbitrum still dominates in DEX trading volume for large trades and complex DeFi strategies. The GMX/Camelot ecosystem on Arbitrum handles trading patterns that Base’s DeFi stack hasn’t replicated yet.

My Trading Infrastructure Decision

I run trading bots on both chains, and my allocation reflects this reality:

• Base: Retail-facing strategies, small-value arbitrage, paymaster-subsidized interactions
• Arbitrum: Large-value swaps, options strategies, cross-protocol arbitrage

The smart move isn’t choosing one chain — it’s understanding the different user profiles and optimizing your strategy for each. Emma’s data validates what the on-chain analytics have been showing: Base and Arbitrum are serving fundamentally different markets.

The “monopoly” concern is real for consumer apps (Base is winning decisively). But for DeFi infrastructure and trading, the L2 landscape is still genuinely competitive.