Non-Custodial Wallet Development Company
We build non-custodial crypto wallets where private keys never leave the user's device — no backend custody, no third-party risk. From key generation and encrypted storage to BIP39 recovery and biometric authentication, we implement the full security stack correctly. EVM, Solana, and TRON supported. Whether you're building a standalone wallet, a DeFi product, or a white-label solution — we design around user sovereignty from the first line of architecture.
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Keys
on Server
Blockchain
Networks
Self
Custody
Web3
Engineers
Wallet Types
Non-Custodial vs Custodial Wallet Development
The key model you choose defines your product's security posture, compliance requirements, and user experience. Here's how the two approaches differ in practice.
Non-Custodial Wallet
Private keys are generated and stored on the user's device — encrypted, never sent to a server. The user has full control over their assets. No custody liability, no single point of failure, no dependency on your backend to access funds.
Included functions
Custodial Wallet
Private keys are managed by the platform on the user's behalf. Easier account recovery, simpler UX for non-crypto-native users — but introduces custody responsibility and regulatory complexity. Suitable for exchanges, neobanks, and products where the operator controls the key infrastructure.
Included functions
Core Features
Non-Custodial Wallet Features That Keep Keys Where They Belong
Building non-custodial correctly means making the right decision at every layer — from key generation to memory cleanup. These are the four areas that define whether a non-custodial implementation is actually secure.
Key Generation & Storage
BIP39 mnemonic generation with cryptographically secure entropy. Private keys derived via BIP32, encrypted with AES-256-GCM, and stored exclusively in iOS Keychain or Android Keystore — never in plain text, never on a server.
Layered Authentication Model
A 6-digit PIN unlocks an internal passphrase, which decrypts private keys only when required. Biometric authentication (Face ID, Touch ID, Fingerprint) as a second unlock layer. Keys are cleared from memory immediately after signing.
Brute-Force & Leak Protection
Limited PIN attempts with configurable lockout and wipe policy. Screenshot prevention on seed phrase and backup screens. No keys persisted in logs, crash reports, or shared storage — hardened against both local and remote extraction.
Backup & Self-Custody Recovery
Full wallet recovery via BIP39 seed phrase — always available, no server dependency. Optional encrypted cloud backup to iCloud or Google Drive, encrypted client-side before upload. Cloud password is separate from the app PIN.
Our Cases
Non-Custodial Wallet Products We've Shipped
Real non-custodial implementations — from multi-chain mobile wallets to DeFi products where key security and user sovereignty weren't optional.
Build Your Wallet With Us
Secure Multi-Chain Crypto Wallet with Fiat Integration and Cross-Chain Trading
Developed a Colombian cross-chain crypto wallet with major blockchain integration, fiat on-ramps, and full app store compliance.
2500 +
hours of development
85 K
Project Budget
7
person expert team
Web3
DEX Aggregator Solution: Custom App Development
DeFi/DEX aggregator dApp offering liquidity and rates across Ethereum, BSC, Optimism, and Polygon—an entry point to the Network ecosystem.
50 K
investments attracted
90 +
liquidity pools
4
months of product development
Blockchain Decentralized Exchange Case: Custom App Development
Venom is a decentralized crypto exchange that allows users to swap tokens, manage liquidity pools, and earn rewards on farming.
250 K
unique users per month
6
months of project maintenance
99.95 %
Uptime Ensured high stability of the product with the help of AWS
What We Do
Non-Custodial Wallet Development Services
We cover every layer of non-custodial wallet engineering — from key management architecture and secure storage to mobile delivery and App Store submission. No shortcuts on the security model.
Discuss Your Project
Non-Custodial Key Management
BIP39 mnemonic generation, BIP32 HD derivation, multi-account support. Ed25519 for Solana, secp256k1 for EVM and TRON. Keys generated on-device, encrypted before storage, cleared from memory after use — the full lifecycle handled correctly.
Secure Storage Implementation
Platform-native secure storage on every target: iOS Keychain with device-only access mode, Android Keystore with EncryptedSharedPreferences. MMKV encrypted storage for performance-sensitive data. Sensitive secrets never touch general-purpose storage.
Authentication & Access Control
Layered unlock model: PIN → internal passphrase → private key decryption. Biometric authentication as a second factor. Brute-force lockout with configurable wipe policy. Screenshot prevention on seed and backup screens. Part of the full security stack we implement across our crypto wallet development services.
Seed Phrase Backup & Recovery
BIP39 recovery flow with secure input handling. Optional encrypted cloud backup — iCloud Drive for iOS, Google Drive appDataFolder for Android. Client-side encryption before upload, cloud password decoupled from app PIN.
Multi-Chain Non-Custodial Architecture
One non-custodial key model across EVM, Solana, and TRON. Chain-specific derivation paths, token standards, and transaction validation — unified under a single adapter interface without compromising per-chain correctness.
Need a wallet where users actually own their keys?
Why Teams Choose OmiSoft for Non-Custodial Wallet Development
Non-custodial isn't a feature you add — it's an architectural commitment made at the start. We've shipped production non-custodial wallets and know where implementations fail when the security model isn't taken seriously from day one.
Let's Build Your Non-Custodial Wallet.
Max
CTO, Expert in Crypto Wallet Development
FAQ
Frequently asked questions
What is a non-custodial wallet and how does it differ from custodial?
In a non-custodial wallet, private keys are generated and stored on the user's device — no third party holds them. The user has full control over their funds. In a custodial wallet, the platform manages keys on the user's behalf. Non-custodial eliminates custody liability but requires a solid key backup UX. Custodial is simpler to recover but introduces regulatory complexity and single-point-of-failure risk.
How are private keys protected in a non-custodial wallet?
Keys are encrypted with AES-256-GCM using PBKDF2-derived encryption keys, random salt, and a per-operation IV. They are stored in iOS Keychain or Android Keystore — never in plain text, never in general-purpose storage, never on a server. Keys are cleared from memory immediately after each signing operation.
What happens if a user loses their phone?
The wallet is fully recoverable via BIP39 seed phrase — 12 or 24 words generated at wallet creation. Optionally, an encrypted backup can sync to iCloud or Google Drive, encrypted client-side before upload. Recovery never requires contacting OmiSoft or any third party.
What is the difference between non-custodial and MPC wallets?
In a non-custodial wallet, the full private key exists on the user's device. In an MPC wallet, the key is split between the user's device and a server — neither side holds it alone. MPC eliminates seed phrase risk and enables policy controls, but adds infrastructure complexity. Non-custodial is simpler, fully self-sovereign, and the standard for consumer DeFi products.
Which blockchains do you support for non-custodial wallet development?
Our production stack covers EVM networks (Ethereum, Polygon, BSC, Base, Arbitrum, Optimism, Avalanche), Solana, and TRON — each with correct HD derivation paths, token standards, and transaction validation. New EVM chains can be added quickly via adapter pattern.
Can a non-custodial wallet support DeFi interactions?
Yes. Non-custodial and DeFi are a natural fit — users sign transactions locally and interact with protocols directly without routing through a custodian. We build non-custodial wallets with swap integrations, on-chain protocol connections, and approval management where needed — see our dedicated DeFi wallet development services for the full scope.
How does biometric authentication work in a non-custodial wallet?
Biometrics (Face ID, Touch ID, or Fingerprint) act as a second unlock layer — they authenticate the user and release the PIN-protected passphrase, which then decrypts the private key. Biometrics never have direct access to the key itself. The layered model ensures that biometric compromise alone is not sufficient to access funds.
Can you build a non-custodial wallet that passes App Store review?
Yes. We include App Store and Google Play submission in our delivery scope, along with full security documentation — key storage rationale, encryption references, and OWASP MASVS alignment. Non-custodial crypto wallets receive additional scrutiny during review, and our documentation is prepared specifically for that.
How long does it take to build a non-custodial wallet?
A non-custodial MVP on a single chain typically takes 8–12 weeks. A production multi-chain non-custodial wallet for iOS and Android is 14–20 weeks. Timeline depends on the number of supported networks, DeFi integrations, and whether custom UI/UX design is included.
Who owns the private keys in a white-label non-custodial wallet?
The end user — always. In a non-custodial model, key ownership doesn't change based on whether the product is custom-built or white-label. The keys are generated on the user's device, encrypted locally, and never transmitted. OmiSoft has no access to keys at any point.