Cross-Platform Blockchain Wallet & DApp Portal

Blockchain App (Ionic + Web3)

We built a secure, cross-platform blockchain app using Ionic that gives users a unified Web3 experience across iOS, Android, and the web. From managing multiple wallets to signing transactions and interacting with DeFi protocols, the app is designed for clarity, safety, and advanced users who still appreciate a clean, guided UX.

Under the hood, the app integrates with Web3 providers for Ethereum-compatible chains, handles gas estimation and fee selection, and exposes a DApp browser with deep-link support. Ionic + Capacitor powers a single codebase, while secure key handling, biometric locks, and transaction simulations reduce user risk at every step.

Multi-chain Web3 wallet DApp & DeFi access Biometric-secured actions Ionic + Capacitor + Web3
Impact at a glance

1 codebase

iOS, Android & Web

Multi-chain

EVM networks supported

Secure

Biometric + encrypted keys

DApp-ready

Built-in browser & deep links

The app lets users move from basic token transfers to exploring DeFi and NFT use-cases, without needing multiple wallets or browser extensions.

Problem

Web3 users and projects were hitting friction:

  • Fragmented experience across browser extensions, mobile wallets, and desktop tools.
  • Non-technical users confused by raw gas values, hashes, and chain IDs.
  • No branded wallet for the ecosystem’s own users and DApps.
  • Limited control over UX, security policies, and chain support roadmap.
Solution

We delivered a branded Ionic Web3 app:

  • Ionic + Capacitor app using a reactive Web3 layer for EVM chains.
  • Wallet creation/import (mnemonic, private key) with encrypted, device-local storage.
  • Support for token balances, transfers, and multi-account management.
  • DApp browser with deep-link and WalletConnect-style flows for protocol integrations.
Outcome

The blockchain app now:

  • Offers a single, branded wallet experience with the project’s own UX standards.
  • Enables users to interact with DApps and DeFi protocols from mobile safely.
  • Reduces support tickets around gas, pending transactions, and failed swaps.
  • Acts as the main on-ramp for new users into the project’s ecosystem.

Architecture overview

The app combines Ionic’s cross-platform UI with a Web3 integration layer and secure storage so keys never leave the device while still enabling advanced blockchain features.

  • Ionic shell – Tab-based navigation for Wallet, Tokens, DApps, and Settings, with lazy-loaded feature modules for performance.
  • Web3 integration – A service layer around ethers.js/web3.js handling providers, chain switching, gas estimation, and transaction building.
  • Secure storage – Encrypted key storage via Capacitor plugins (Keychain / Keystore) plus backup/restore flows for mnemonics.
  • DApp browser & deep links – In-app webview with injected provider and support for WalletConnect-style sessions and custom URL schemes.
  • Monitoring & telemetry – Non-sensitive analytics for flows (onboarding, send, receive, DApp usage) and crash tracking for production stability.
Advanced Ionic & Web3 features
Biometric approval

Sensitive actions (sending, signing) require biometric or PIN confirmation, with clear transaction previews before signing.

Gas & fee helpers

Suggested gas presets (slow/normal/fast) plus advanced mode for power users, all based on live network conditions.

Transaction simulations

Human-readable decoding and risk flags for approvals and contract interactions to reduce “blind signing” risk.

Offline & low-connectivity handling

Cached balances and history, graceful offline states, and queued actions that retry when connection is restored.

A CI/CD pipeline (App Store / Play Store builds via Fastlane, environment-based configs) lets the team add new chains, RPC endpoints, or DApp integrations without rewriting the core app.

Wallet capabilities
  • Multi-account, multi-chain wallet management.
  • Token balances, transaction history, and receive QR codes.
  • Send flows with contact/address book and ENS-style resolution (where supported).
  • Custom tokens and contract addresses supported.
Tech stack & tooling
  • Ionic + Capacitor for cross-platform UI and native bridges.
  • TypeScript + component-based architecture for maintainability.
  • Ethers.js/Web3.js for blockchain interaction.
  • Secure storage plugins, biometric auth, and runtime configuration.
Typical use cases
  • Projects needing a branded wallet for their ecosystem.
  • DeFi platforms offering a dedicated mobile access point.
  • Communities that want simple on-ramps into Web3 on mobile.
  • Any team building a secure, cross-platform blockchain app with Ionic.