Crypto wallet development for Web3 products

What does crypto wallet development deliver?

Crypto wallet development delivers a wallet experience shaped around your product, its users, and the way it handles keys and transactions. The project can cover product design, application development, chain integrations, backend components, monitoring, and preparation for a security review. The exact scope is agreed before implementation.

This service suits teams adding wallet functionality to an existing Web3 product and founders building a wallet as the core product. We start by turning the intended user journey into a buildable scope: onboarding, wallet creation or connection, asset views, transaction confirmation, and any swap flow you need. We also identify what must be handled by your own team or an external provider.

Common delivery choices include:

• A non-custodial wallet where users retain control of their signing keys.
• A custodial wallet where the product handles key management, subject to review with your counsel.
• A browser extension, mobile app, or Telegram Mini App interface.
• A multi-chain experience with the networks and transaction flows defined in scope.

If the wallet is one part of a wider product, see our dApp development and Web3 development services. The right brief makes clear who the wallet serves, what users must be able to do, and which operational responsibilities remain with the project.

How should you choose a custodial or non-custodial wallet?

The key decision is who is responsible for controlling and protecting signing keys. That choice affects onboarding, recovery, user support, backend design, and the legal questions your team must resolve before launch.

For a non-custodial wallet, users retain control of their keys. Product decisions should make the signing and recovery experience understandable, including what happens when a user loses access. For a custodial wallet, your organization takes on key-management responsibilities. Consult your legal counsel on the product’s regulatory classification before committing to that model; development scope cannot resolve that classification for you.

We use a requirements review to make the implications visible before design is locked. Bring decisions or open questions about:

• Who initiates and approves transactions.
• How users sign, recover access, and contact support.
• Which chains, assets, and transaction types are in scope.
• What backend services and operational monitoring are needed.
• Which external services your product expects to integrate.

The resulting scope records the chosen approach and the unresolved decisions that could change implementation. For related on-chain components, consider smart contract development. If you need a wallet interface across phone and desktop use, we can also coordinate with mobile app development so the experience and technical responsibilities are clear.

Which wallet format and transaction flows should you build first?

Start with the format your users can reach naturally, then define the smallest complete set of wallet actions they need. A browser extension fits a browser-based product; mobile delivery supports app-based use; a Telegram Mini App can place wallet interactions inside a Telegram experience. These formats have different interface and integration needs, so the initial scope should name the primary one rather than treating every channel as interchangeable.

Next, map the complete transaction path. Include what a user sees before signing, what confirmation looks like, how success or failure is communicated, and where support information appears. If swaps are included, define the intended flow and the external dependencies that require coordination. For multi-chain support, list each required network and the user actions that must work on it. Avoid adding networks simply to make a feature list longer; each one expands the scope you need to design, implement, and test.

A useful first-release checklist is:

• Name the primary platform and the user’s entry point.
• List the actions required for a successful first session.
• Specify the networks, assets, and transaction types in scope.
• Identify which screens need explanatory or recovery guidance.
• Separate launch requirements from later product ideas.

We translate that checklist into a design and implementation scope. If Telegram is the main surface, our Telegram bot and Mini App development service can cover the surrounding experience as well as the wallet-specific work.

How do security review and handoff fit into the build?

Security considerations belong in the wallet design and implementation plan, not only at the end of a build. We document the selected key-management model, transaction flows, integrations, and areas that need review so your team can prepare for security assessment and coordinate with the right reviewers.

Our Evidence Pack gives your stakeholders a usable record of the agreed scope and important implementation decisions. It can include the target platforms, supported chains, key-management responsibilities, transaction and swap flows, backend dependencies, and testing coverage. The pack is a delivery aid, not a claim that an independent audit has been completed.

Before handoff, we check the agreed user journeys and record what was tested, what remains outside scope, and which operational tasks belong to your team. Prepare access to product requirements, brand assets, chain choices, integration details, and a technical contact who can answer implementation questions. If you already have a security reviewer, include their requirements early so the work can be planned around them.

A clear handoff should leave your team able to identify the wallet’s components, understand its dependencies, and continue the next stage of review or launch preparation. We can also coordinate the wallet build with a broader Web3 development scope when several product components need to move together.

What should your wallet project scope account for?

A sound project scope identifies product decisions, integrations, delivery format, and responsibilities before the build is underway. This helps the team distinguish a defined first release from requests that introduce new design, chain, or operational work.

The initial scope should include:

• Wallet model and the party responsible for key management.
• Target interface: browser extension, mobile app, or Telegram Mini App.
• Supported networks and required transaction or swap flows.
• Backend, monitoring, and external integration needs.
• Testing expectations, review preparation, and handoff responsibilities.

We set timing after reviewing these inputs, because an additional platform, chain, or unresolved key-management decision can alter the implementation plan. The quote reflects the agreed project scope rather than an assumed feature bundle. Wallet development pricing: from $6,990 / project.

Wallet security depends on the implementation, key-management choices, integrations, and operational practices; a development engagement cannot certify that a wallet is immune to every vulnerability. Network availability, external service behavior, and counsel’s regulatory assessment are outside the development team’s control, so we identify those dependencies rather than presenting them as settled.

What happens after you share your wallet brief?

Once you share a wallet brief, we review the product goals and identify the decisions needed to define a buildable project. You do not need a final technical specification to start; a clear description of the user, intended wallet model, target platform, and essential actions is enough for an initial review.

A typical engagement follows these steps:

1. Review the product brief. We clarify the audience, wallet use case, target format, and launch requirements.
2. Define architecture and boundaries. We map key-management responsibilities, chains, transaction flows, backend needs, and external dependencies.
3. Confirm design and scope. We agree on the user journeys, included deliverables, review expectations, and project timing.
4. Build and test. The team implements the agreed wallet experience and checks the defined flows against the scope.
5. Handoff and review preparation. We document the build, remaining dependencies, and the next steps for your team and reviewers.

The first useful materials to send are a product summary, any existing wireframes, your preferred wallet format, chain requirements, and known integration or security-review needs. We will respond with focused questions, then prepare a project scope and quote for your review.

Prices

Starting prices in USD. Custom bundles and volume discounts on request. Payment in USDT, USDC, BTC, ETH, SOL, TON or your project token.

How it works

1. Review the product briefWe clarify the audience, wallet use case, target format, and launch requirements.
2. Define architecture and boundariesWe map key-management responsibilities, chains, transaction flows, backend needs, and external dependencies.
3. Confirm design and scopeWe agree on user journeys, deliverables, review expectations, and project timing.
4. Build and testThe team implements the agreed wallet experience and checks the defined flows against the scope.
5. Handoff and review preparationWe document the build, remaining dependencies, and next steps for your team and reviewers.