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Rapidly adding Web3 capabilities to your

mobile products

Alex Komarov Director of Mobile

Misha Nikanorov Head of Mobile Development

MyEtherWallet

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Problems with open source web3 libraries

‘Super libraries’
Incompleteness and bugs
Web-native JS ports have non mobile-native semantics

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MEW Mobile Web3 Toolkit

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github.com/mewwallet

Demo

MEW Mobile Web3 Toolkit

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github.com/mewwallet

Available libraries

mew-wallet-ios-network-layer
mew-wallet-ios-networking
mew-wallet-ios-kit
Mew-wallet-ios-keychain
mew-wallet-web3provider

— All network request descriptions

— All network requests

— EVM node interaction

— injected ‘wallet’ for DApps

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What can you build with these libraries?

What headaches can it save you

🏗

🤦‍♂️

Add crypto wallet features to your app. (i.e. store in-game assets, currency etc.)
Create apps that show accurate web3-related data in real time via lightweight node interaction.
Create hybrid apps that utilize some on-chain features. �(i.e. mint your photo as NFT on chain, pay using in-app purchase for gasless experience.)
Whatever else you can dream up �(Our imagination is pretty limited)

Easy message/transactions signing capabilities to your app.
Simple message/transaction validation.
Easy key generation.
Not having to manage massive libraries with multiple dependencies and non-native semantics.
Battle-tested code used in product with 1M+ downloads.

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MEW APP

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MEW APP

ios-network-layer�ios-networking

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ios-kit

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MEW APP

web3provider

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MEW APP

ios-keychain

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ios-network-layer�ios-networking

ios-keychain

web3provider

ios-kit

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Why did we build this?

Was it worth it?

Because libraries we needed either didn’t exist, or caused us headaches.

Our product doesn’t blow up when we add a new feature to it.
Adding new flows (i.e. BUIDLbux) to product became faster.
Our technical debt is more than manageable.
Onboarding new team members is much easier.
We get to contribute to the community. �

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github.com/mewwallet

Available libraries

mew-wallet-ios-network-layer
mew-wallet-ios-networking
mew-wallet-ios-kit
mew-wallet-ios-keychain
mew-wallet-web3provider

— All network request descriptions

— All network requests

— EVM node interaction

— DApp injected ‘wallet’

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ios-network-layer

ios-networking

Libraries

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ios-network-layer

ios-networking

Libraries

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ios-network-layer

ios-networking

Libraries

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ios-network-layer

ios-networking

Libraries

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ios-network-layer

ios-networking

Libraries

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ios-network-layer

ios-networking

Libraries

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ios-network-layer

ios-networking

Libraries

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ios-network-layer

ios-networking

Libraries

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Your app can crash here. Oops.

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Same thing using ios-network-layer

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ios-network-layer

ios-networking

Libraries

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ios-network-layer

ios-networking

Libraries

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ios-network-layer

ios-networking

Libraries

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ios-network-layer

ios-networking

Libraries

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ios-network-layer

ios-networking

Libraries

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ios-network-layer

ios-networking

Libraries

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ios-network-layer

ios-networking

Libraries

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github.com/mewwallet

Available libraries

mew-wallet-ios-network-layer
mew-wallet-ios-networking
mew-wallet-ios-kit
mew-wallet-ios-keychain
mew-wallet-web3provider

— All network request descriptions

— All network requests

— EVM node interaction

— DApp injected ‘wallet’

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github.com/mewwallet

Available libraries

mew-wallet-ios-network-layer
mew-wallet-ios-networking
mew-wallet-ios-kit
Mew-wallet-ios-keychain
mew-wallet-web3provider

— All network request descriptions

— All network requests

— EVM node interaction

— DApp injected ‘wallet’

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ios-kit

Library

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ios-kit

Library

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github.com/mewwallet

mew-wallet-ios-kit

Supported standards:

BIP-39
EIP-55
EIP-67 + EIP-681
EIP-155
EIP-1559
EIP-2930
EIP-712 (+zkSync support)
EIP-1024

BLS digital signature
RLP encoding
ABI coding
BIP-32
BIP-44

and more…

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github.com/mewwallet

Available libraries

mew-wallet-ios-network-layer
mew-wallet-ios-networking
mew-wallet-ios-kit
mew-wallet-ios-keychain
mew-wallet-web3provider

— All network request descriptions

— All network requests

— EVM node interaction

— DApp injected ‘wallet’

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ios-keychain

Library

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ios-keychain

Library

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ios-keychain

Library

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ios-keychain

Library

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ios-keychain

Library

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ios-keychain

Library

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ios-keychain

Library

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github.com/mewwallet

Available libraries

mew-wallet-ios-network-layer
mew-wallet-ios-networking
mew-wallet-ios-kit
mew-wallet-ios-keychain
mew-wallet-web3provider

— All network request descriptions

— All network requests

— EVM node interaction

— DApp injected ‘wallet’

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github.com/mewwallet

Available libraries

mew-wallet-ios-network-layer
mew-wallet-ios-networking
mew-wallet-ios-kit
mew-wallet-ios-keychain
mew-wallet-web3provider

— All network request descriptions

— All network requests

— EVM node interaction

— DApp injected ‘wallet’

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ios-network-layer�ios-networking

ios-keychain

web3provider

ios-kit

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github.com/mewwallet

Available libraries

mew-wallet-ios-network-layer
mew-wallet-ios-networking
mew-wallet-ios-kit
mew-wallet-ios-keychain
mew-wallet-web3provider

— All network request descriptions

— All network requests

— EVM node interaction

— injected ‘wallet’ for DApps

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Community use examples

built Safari extension using EIP1559Transaction and TransactionSignature from mew-wallet-ios-kit.

Ledger

“Blue checkmarks for email”�Moonfish validates and authenticates emails so you can be sure the email is legitimate.

Moonfish

@moonfishapp | https://moonfish.app

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What would you build?

github.com/mewwallet

mewwallet.com

alexk@myetherwallet.com

@akomarov

mishan@myetherwallet.com

Alex Komarov �Director of Mobile

Misha Nikanorov �Head of Mobile Development