Crypto & Web3 Industry

App Development
Agency for Crypto & Web3

Native iOS/Android and React Native apps for exchanges, wallets, DeFi and NFT - with wallet integration, on-chain data, and App Store / Play Store compliance.

4.9/5(100+ Reviews)

Trusted by

/ Our Approach

Growing Crypto & Web3 brands with App Development since 2017.

Mobile is where Indian crypto volume actually lives - 70%+ of exchange trades happen on an app, not a desktop browser. Building a crypto app means solving three problems most teams underestimate. One: App Store and Play Store compliance is stricter for crypto than for any other financial category - Apple requires jurisdiction proof of authorisation, Google requires equivalent FIU-IND documentation, and both will pull an app for ambiguous claims or unregistered token listings. Two: wallet UX has to work at consumer speed - MetaMask-style seed-phrase flows kill conversion; embedded wallets (Privy, Web3Auth, Dynamic) are usually the right answer. Three: on-chain data on mobile needs aggressive caching and graceful offline states because RPC failures are more visible than on web. We build in React Native (for shared iOS/Android), native Swift and Kotlin where performance or platform-specific features demand it, with wagmi-equivalent wallet stacks (Reown, WalletConnect v2) for Web3 apps and conventional mobile-banking-grade KYC for exchanges.

Mobile app distribution for crypto has become the biggest technical risk area in the last three years. Apple's review policy (App Store Review Guidelines 3.1.5(b)) requires 'appropriate licensing and permissions in the countries where the app is distributed' - in India that means FIU-IND registration documents, no ambiguous guaranteed-return claims, and no unregistered-token listings. Google Play has equivalent requirements and a more aggressive algorithmic pull rate. A re-submission after rejection typically costs 2-6 weeks of schedule slip - this is why our review flow includes a pre-submission compliance audit. Tech-stack wise: React Native is the default for most Indian crypto projects (shared codebase, faster iteration, good enough performance for non-trading-chart UIs), with specific native modules for wallet operations (where biometric + Secure Enclave + Keychain integration matters). Native Swift/Kotlin shows up for high-performance trading apps with heavy WebSocket traffic, advanced charting libraries (TradingView native SDK) and extensive biometrics. Backend-wise, realtime (WebSocket + server-sent events) needs careful backpressure handling because crypto apps get used during volatility spikes, and an app that degrades under load loses users permanently. Security posture for a consumer crypto app needs: certificate pinning, jailbreak/root detection, encrypted local storage (Android EncryptedSharedPreferences, iOS Keychain), biometric unlock, and for exchanges, PIN + OTP for trade confirmation. We don't build custody (key management for user funds) - that's a specialist security domain and should be a third-party or in-house security team's scope.

100+

Projects Delivered

90%+

Success Rate

3X ROI

ROI

25+

Team Experts

/ Why Baclinc

Why Crypto & Web3 brands choose us for App Development.

View our work

Store Compliance Operator

Apple + Google crypto app submission is a specialist skill. Jurisdiction proof, ambiguous-claim language, token-listing restrictions - we've navigated the review cycle.

Embedded Wallet UX

Privy, Web3Auth, Dynamic - the difference between a 5% and a 35% first-time conversion rate. Seed-phrase-first UX is a conversion killer.

On-Chain Data Mobile-First

Cached, throttled, graceful-offline. WebSocket management, background refresh, notification on on-chain events.

KYC Flow Engineering

For exchanges, KYC drop-off is the biggest top-of-funnel leak. We integrate Onfido, HyperVerge, IDfy with drop-off tracking per step.

React Native or Native

Chosen per project. RN for shared 80% codebase with platform-specific wallet modules. Native where biometrics, push or platform APIs require it.

Security Posture

Certificate pinning, jailbreak/root detection, encrypted local storage for private data. Not crypto-custody - we don't build cold-storage logic - but consumer-app security baseline.

/ Real Results

Featured Success Stories

View All Case Studies

3-Verse Crypto Exchange2024

6X Traffic Growth in Crypto Niche - 3.0 Verse SEO

How We Work

Our Proven Process

Compliance + Platform Audit

Apple + Google review requirements for your jurisdiction, licensing evidence, ambiguous-claim scrub. Pre-submission checklist before a single line of code.

Wallet UX Decision

Embedded wallet (Privy, Web3Auth, Dynamic) versus self-custody seed-phrase versus hybrid. First-time conversion math drives the choice.

KYC + Onboarding Flow

For exchanges: Onfido/HyperVerge/IDfy integration, drop-off tracking per step, PAN/Aadhaar/OTP/selfie flow optimisation.

Realtime + On-Chain Integration

WebSocket architecture, rate-limit backpressure, reconnection logic, graceful offline. Background fetch and push on on-chain events.

Security Posture Layer

Certificate pinning, root/jailbreak detection, Keychain/Encrypted Storage, biometric unlock, PIN flow for trade confirmation.

Store Submission + Monitoring

Pre-submission dry run, response-to-review playbook, post-launch crash + performance monitoring, over-the-air update capability for the RN surface.

/ Testimonials

What our clients say

"Great experience working with the team. Very good results in less time and very proactive in responding to queries. Kudos to the team👍🏻"

Saad Khan

Founder, RebelCorp

"i've worked with this SEO agency and still up to now, they understand the SEO factors and thinking out of the box."

Sydney Ifergan

Trade.com

"Abhishek is super-professional in his approach and a delight to collaborate with! He works WITH you to help you overcome challenges and achieve desired objectives. Great partner to work with!"

Ravi Raj

Director, Skillaroo

"We, at The Club Mumbai, had a great experience working with Abhishek from Baclinc. Right from designing our website to hosting it, working on SEO, coming up with nitty-gritty of digital marketing, we had constant support and advise from the team."

Samir Gupte

HOM, The Club Mumbai

"It has truly been a pleasure working with Baclinc. I wanted to take a moment to express my sincere gratitude for your dedication and support throughout the website development process."

Sandeep Shinde

Marketing Manager, Enlite Research

"We have worked with Baclinc for our website design and development services and are happy with the output delivered, the team works very professionally and helped us ideate the best designs to our liking. I would recommend Baclinc as a website design agency to any enterprise."

Fazlani Group

"Great experience working with the team. Very good results in less time and very proactive in responding to queries. Kudos to the team👍🏻"

Saad Khan

Founder, RebelCorp

"i've worked with this SEO agency and still up to now, they understand the SEO factors and thinking out of the box."

Sydney Ifergan

Trade.com

"Abhishek is super-professional in his approach and a delight to collaborate with! He works WITH you to help you overcome challenges and achieve desired objectives. Great partner to work with!"

Ravi Raj

Director, Skillaroo

Samir Gupte

HOM, The Club Mumbai

"It has truly been a pleasure working with Baclinc. I wanted to take a moment to express my sincere gratitude for your dedication and support throughout the website development process."

Sandeep Shinde

Marketing Manager, Enlite Research

Fazlani Group

Common Questions

Everything you need to know about App Development for Crypto & Web3 brands

React Native or native - how do you decide?

For Web3 wallet apps, DeFi front-ends and most exchange apps, React Native covers 80-90% of the UI with shared code, and we drop to native (Swift/Kotlin) only for wallet-operation modules, biometrics integration and high-performance chart rendering. For trading apps that live or die on sub-100ms chart updates and deep biometric integration (e.g. a pro-trader app with Face ID tied to individual trade confirmations), full native is the right call. Most Indian crypto projects don't need full native.

Can you get our crypto app approved on the App Store and Play Store?

Apple and Google both require specific evidence in 2026: jurisdiction-appropriate regulatory registration (FIU-IND documentation for India), no ambiguous guaranteed-return claims, and no unregistered-token listings on the storefront app (token trading from inside the app is allowed against listed assets only). Apple additionally requires a company registered in the region where the app is distributed or clear parent-company documentation. Approval takes 2-6 weeks with a clean submission; rejections typically cost 3-8 weeks of rework plus re-review. Our pre-submission audit catches 80% of issues before first submit.

Do you handle token listing flows?

The UI side (listing page, trading pair setup, market-data wiring, order-book integration) - yes. The exchange-side market-making and liquidity provisioning - no, that's an exchange-ops domain with its own specialists. For token projects wanting to launch trading pairs across listed venues, we handle the outreach and documentation framework but not the exchange-side economics negotiation.

How do you handle security audits for crypto apps?

We're app developers, not custody or smart-contract auditors. Any app that touches user private keys (self-custody wallets) should be audited by a crypto-security specialist (Trail of Bits, ChainSecurity, Halborn, CertiK tier). For exchange apps that don't hold private keys on-device (server-custody), the audit scope is standard mobile security - we have partner firms we recommend at that tier. Audit sequence is pre-launch; we budget 3-6 weeks depending on scope.

Can you rebuild an existing crypto app?

Yes. Typical rebuild scope: modernise React Native version (from 0.5x to 0.7x), migrate wallet stack (from ethers-based to viem/wagmi-equivalent mobile stack), re-do onboarding flow for embedded-wallet UX, overhaul KYC step-tracking. Rebuild projects typically run 16-24 weeks with parallel development on current app maintenance.

How do you handle app performance during a market crash or volatility spike?

Load testing has to model the correlated spike, where every user opens the app in the same five minutes and all of them hit the most expensive screens at once. A crypto app's worst traffic moment is not gradual growth but a price event, and the specific failure mode is that portfolio, order and websocket demand peak simultaneously while the same users retry aggressively because they are anxious. We build queue-and-degrade behaviour so the app sheds non-essential features such as charts and news before it ever fails at balances and orders, and we rate-limit client retries so the app does not amplify its own outage. An app that dies during a crash loses users permanently, because that is the moment trust is decided.

Can you build a self-custody wallet where users hold their own keys?

We can build the interface, and we will insist that key management itself comes from an audited library or a specialist provider rather than from us. Writing custom key generation, storage or signing logic is the highest-risk code in consumer crypto, and a subtle error there produces irrecoverable loss with no support path for the user. Our approach uses established SDK or embedded-wallet providers for the cryptographic layer, and concentrates our work on recovery flows, transaction clarity and the onboarding that decides whether a mainstream user ever completes setup. If a project wants a bespoke key implementation, we would recommend a security firm lead that piece.

What happens to our app if Indian crypto regulation tightens further?

Build the compliance surface as configuration rather than as hardcoded behaviour, because the assumption that rules will change is the only safe one to make. Features that regulation is most likely to touch, including which assets are visible, what limits apply, which disclosures appear and which flows require additional verification, should be server-driven so a policy change is a configuration update rather than an app release cycle and a store review. Teams that hardcode these end up waiting weeks for approval to become compliant, which is the worst possible position. We cannot predict the rules and we can make sure a change does not require a rebuild.