Blockchain Mobile App Development
We design intuitive mobile platforms that empower users to access DeFi services anytime, anywhere.
Solicy builds non-custodial DeFi wallets that give users full control of their private keys, not us and not a third party. We handle key generation, hardware-backed storage, biometric authentication, and multi-chain support (Ethereum, BNB Chain, Polygon, and more), so your wallet is secure by architecture rather than by promise.
A wallet holds the keys to everything else in DeFi. If it's slow, confusing, or insecure, nothing else about your platform matters. Here's how we approach it.
We start by defining what kind of wallet fits your product: custodial or non-custodial, hot or cold storage, single-chain or multi-chain. This decision shapes everything downstream, from your compliance obligations to how much control your users have over their own funds.
This is the part most teams underestimate. We design private key generation, hardware-backed storage, and biometric authentication (Face ID, fingerprint) so keys never sit exposed on a server. Seed phrase backup and recovery flows are built in from the start, not patched on later.
We build the wallet to work with the tools your users already have, including MetaMask and WalletConnect compatibility, and to support the chains your platform runs on. Transaction signing, gas fee estimation, and address management are built for clarity, so users aren't guessing what a transaction will actually cost or do.
Before launch, we run penetration testing against the wallet and review the key management flow specifically, since that's the part attackers target first. Any DeFi wallet development company can say secure. We test for it before you ship.
After launch, we track wallet-specific metrics like connection failures, transaction drop-off, and failed signing attempts, so we can fix friction points fast instead of finding out about them from support tickets.
We don't build wallets that hold your users' keys for them. Private keys stay with the user, which is what people actually mean when they say a DeFi wallet is trustworthy.
Hardware-backed key storage, biometric authentication, and encrypted local storage aren't add-ons. They're part of the base design of every wallet we build.
We design onboarding, gas fee explanations, and transaction confirmations for people who've never used a wallet before, since that's usually where DeFi products lose the most users.
Support for Ethereum, BNB Chain, Polygon, and MetaMask or WalletConnect integration, so your wallet fits into the ecosystem your users already use.
We've built wallets around subscription and fintech models, not just standalone apps, so we think about retention and monetization alongside the technical build.
Mobile App Development
Crypto Launchpad Development
DeFi Development
Ravindra Waghmare
Co-Founder, COO at Mobisoft Infotech
Our 20-year-old site needed a full rebuild—info, membership, and commerce. Solicy stood out with their responsiveness and clear expertise across multiple areas.
Riggs Eckelberry
President & CEO at OriginClear, Inc
We had a strict launch timeline. Solicy helped finish the design, corrected errors, developed the site end-to-end, and ensured everything worked smoothly after going live.
Roger B.
Solicy provided matching professionals who adapted to our pace, offered quality from the start, and communicated well. Their low-code and design skills were valuable.
Hakim Bousba
The Solicy team delivered an AI-powered recruitment platform that reduced time-to-hire by 40%, improved candidate quality by 30%, and automated 50% of tasks.
Lara K.
Head of Digital Transformation Unit
Solicy team was reliable and went the extra mile—even working weekends. Great job delivering on time. I’ll definitely hire them again. Thanks!
We serve a diverse range of industries — not just the ones listed below. If your sector isn’t mentioned, there’s a good chance we’ve worked in it too Let’s talk.
Streamline real estate with listing software, tenant tracking & sales monitoring. Our platforms help agents work efficiently, decide smarter & delight clients.
Construct secure, intuitive financial products using our customized banking apps, payment systems, and analytics platforms—designed to protect customer data, facilitate compliance, and propel your business forward more quickly.
DeFi wallet development covers designing and building the software that lets users generate, store, and control private keys, sign transactions, and interact with DeFi protocols. It includes key management architecture, biometric authentication, multi-chain support, and integration with tools like MetaMask and WalletConnect. It's a narrower, more security-focused discipline than building a full DeFi platform or app.
A custodial wallet means a company holds and manages private keys on the user's behalf, similar to a bank holding your money. A non-custodial wallet gives users full control of their own keys, with no third party able to access or freeze funds. Most DeFi wallets are non-custodial by design, since that control is the point of decentralized finance. We build non-custodial wallets by default unless your product specifically needs custodial features.
Cost depends on how many chains you support, whether you need hardware-backed key storage, and how much custom integration your platform requires. A single-chain wallet with standard features costs less than a multi-chain wallet with hardware security modules and custom transaction flows. We provide a firm quote after a short discovery call rather than a flat number, since wallet security requirements vary a lot by project.
A DeFi wallet is the tool users use to store keys and sign transactions. A DeFi app or platform (a lending protocol, DEX, or staking product) is what the wallet connects to. Some projects need both built together, others already have a platform and need a standalone wallet, or already have a wallet and need a platform. We build both, and can scope either independently.
We build wallets that support Ethereum, BNB Chain, and Polygon, with compatibility for MetaMask and WalletConnect so your wallet works within the ecosystem users already have. If your project needs support for additional chains, we scope that during the architecture phase.
A single-chain wallet with standard key management typically takes 6-10 weeks. Multi-chain wallets with hardware-backed security and custom integrations usually take 3-4 months. Timeline depends heavily on how many chains and third-party integrations are involved.
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We design intuitive mobile platforms that empower users to access DeFi services anytime, anywhere.
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