TL;DRA cross-app wallet (sometimes called a global wallet) is a single non-custodial wallet that travels with the user across every app in an ecosystem — buy an asset in one product, use it in another, with no manual transfers and no second login. This guide explains how cross-app wallets differ from single-app embedded wallets, why studios and ecosystems are adopting them, who's building them today, and how Openfort's Ecosystem SDK lets developers ship a branded cross-app wallet in days.
TL;DR A cross-app wallet — sometimes called a global wallet — gives users one non-custodial identity that works across every app in an ecosystem. They sign in once, deposit once, and use the same balance and assets everywhere. For developers, it's how you turn a portfolio of products into a single network without forcing users into MetaMask.
What is a cross-app wallet?
A cross-app wallet is a portable, non-custodial wallet that follows the user across multiple applications. Unlike a standard embedded wallet, which is scoped to a single product, a cross-app wallet uses a shared authentication and key-management layer so the user can buy an asset in one app and immediately use it in another — same address, same balance, no manual transfers.
Cross-app wallets are sometimes branded as "global wallets" or "ecosystem wallets." The mechanics are the same: one identity, many apps.
How we got here
Most apps today provision an embedded wallet at signup. That solves the single-app onboarding problem, but it creates a new one — assets get siloed inside whichever product created them. Want to use a token you earned in Game A inside Marketplace B? You're back to manual transfers, gas fees, and "where did my NFT go?" support tickets.
Cross-app wallets fix that by making the wallet portable. The same identity travels with the user across every app that opts into the ecosystem.
Why studios and ecosystems adopt cross-app wallets
One wallet, every app
Users deposit once. Their balance, NFTs, and identity are available everywhere in the ecosystem with no bridging or transfers.
Single sign-on across the network
Sign in to the wallet once and every connected app inherits the session. The "connect wallet" friction tax disappears.
Consistent UX and branding
The signing modal, login flow, and recovery experience stay identical across apps, so users learn the system once.
Stronger security model
A wallet that works across many apps has to be more secure, not less. Cross-app wallets typically use device passkeys or MPC plus per-app permissioning, so a single compromised app can't drain the rest.
User consent on every cross-app action
Unless a session key is explicitly granted, the user approves each interaction with a popup — same trust model as a connected EOA, with better UX.
Who's building cross-app wallets
Several teams are tackling this problem from different angles:
Openfort
Ships an Ecosystem SDK that bundles authentication, signing UI, and a cross-app communication protocol. White-label support means studios get their own branded NPM package and login flow, plus Mobile Wallet Protocol compatibility on iOS, Android, and Unity. Built with existing wallets in mind, so users with MetaMask or Coinbase Wallet still work.
Privy
One of the earliest players. Lets teams configure their embedded wallets to interoperate with other apps so users can move between platforms without re-onboarding.
Sequence
Provides a shared wallet address that works across marketplaces, DEXs, and other apps. Strong focus on the gaming and NFT use cases.
Dynamic
Combines authentication and smart wallets with cross-app connectivity, often via WalletConnect-style flows that bridge embedded wallets to external apps.
Para
Anchors wallet portability to email identity rather than per-app accounts. Heavy emphasis on permission scoping — apps only get the access they explicitly need.
How Openfort's cross-app wallet works
Openfort's cross-app wallet is built around the Ecosystem SDK — a single wallet layer that any number of apps can plug into, with full white-label branding and non-custodial security. You can see a working build at the ecosystem demo.
Branded ecosystems, not generic wallets
Studios and protocols can ship "Login With [Your Brand]" rather than asking users to recognise yet another wallet name. The flows integrate with RainbowKit, ConnectKit, and the rest of the wagmi ecosystem, so existing connect-wallet UIs keep working.
Per-ecosystem NPM package
Each ecosystem gets its own NPM package. One install, one configuration, and your apps share authentication and wallet state through the SDK.
Mobile and game-engine native
Native iOS, Android, and React Native support, plus a Unity-compatible Mobile Wallet Protocol library that Openfort contributed back to the spec. The same wallet identity works on the web, in a mobile app, and inside a Unity game.
Real-world: gaming portfolios
Gaming is where cross-app wallets compound fastest. Openfort's case study with Beam shows tens of thousands of users onboarded through a shared Ecosystem SDK — the studio called it "the first cross-app and cross-platform wallet for gamers." Players keep one identity across every title in the portfolio, and assets earned in one game are usable in the next.
Real-world: connected app suites
Beyond gaming, the same pattern works for any company shipping multiple consumer products that should share user state — a fintech with a savings app and a payments app, a creator platform with a marketplace and a fan club, a chain trying to give every dApp on top of it a unified onboarding.
Real-world: chain-level wallets
Layer-1s and L2s use cross-app wallets to ship a "chain wallet" that covers every dApp in their ecosystem. This gives the chain a direct relationship with end users and the option to capture transaction fees through the wallet layer.
What's next for cross-app wallets
As more consumer apps adopt onchain features, asset portability stops being a nice-to-have. Users expect their identity, balance, and NFTs to follow them between apps the same way their Apple ID follows them between iOS apps. The siloed-per-app model breaks down at portfolio scale.
The teams shipping cross-app wallets today are betting that ecosystems — bundles of products with shared identity — will outcompete single-product apps. If that's right, the cross-app wallet becomes the connective tissue.
Build a cross-app wallet with Openfort
If you're shipping more than one app — or want to make your single app the centre of an ecosystem — start with the cross-app wallet documentation or explore the embedded wallet platform it's built on. Most integrations go from zero to a working second-app login in days.