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One Flutter codebase. Two app stores. Money-grade security — shipped on a founder's timeline, not a two-year roadmap.
Free, no-obligation consult · No forms — just a real person.
Official ERPNext Partner
In business since 2011 · 200+ clients
Launching a fintech product is a race against two clocks at once: the market window and the trust window. Ship late and the moment passes — a competitor owns the category you were going to define. Ship fast but insecure, and the first investor who feels unsafe with their money never comes back, and tells ten others why. Most teams are forced to pick one clock. Founders who win pick both.
BitSave (Casper Wealth Holdings Limited) — a crypto-wealth fintech offering passive, SIP-style investing in cryptocurrencies — came to Acube needing exactly that: a polished investor experience live on both app stores and the security a money app demands, without a year-long build. We've shipped 50+ apps, and we built BitSave to do both.
In business since
Clients served
ERP projects
Work by referral
BitSave (Casper Wealth Holdings Limited)
Financial services — crypto wealth management
Cross-platform mobile app design, build and store launch
Android and iOS both needed, fast, without doubling the budget on two native teams.
secure onboarding, deposits and portfolio tracking, with nothing left to chance.
Indian users expect UPI, not clunky card forms; friction at the deposit screen kills conversions.
crypto investors are wary by default; reserves had to be visible and verifiable, not just promised. > The cost of getting it wrong: in fintech, a slow launch forfeits the market window and a single trust gap forfeits the user for good. BitSave couldn't afford either.
A single-codebase Flutter application covering the full investor journey end to end — designed mobile-first and security-first from the first sprint:
| Area | What we delivered |
|---|---|
| Cross-platform app | One Flutter codebase shipped to Google Play (Android) and the App Store (iOS). |
| Crypto products | UI and backend for Bitcoin-only, BGCI-index and hybrid gold-crypto portfolios. |
| UPI deposits | Integrated GPay, PhonePe and PayTM flows for seamless in-app funding. |
| Secure onboarding | KYC-compliant sign-up and authentication. |
| Proof-of-reserves | Backend integration showing real-time, audited asset reserves for transparency. |
| Release engineering | Performance-optimised builds, published to both stores. |
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and the App Store with a unified brand experience.
Seamless cross-platform performance from one codebase — less to build, less to maintain.
A secure, guided crypto-investment workflow funded directly by UPI.
Greater investor trust through built-in proof-of-reserves.
A shorter development-and-launch cycle using Flutter's dual-platform efficiency. BitSave got to both stores with a single, maintainable codebase and the security a money app lives or dies by — beating both clocks instead of trading one for the other.
Flutter (single codebase, Android + iOS) · secure KYC onboarding and authentication · UPI payment integrations (GPay, PhonePe, PayTM) · proof-of-reserves backend integration · cloud-hosted, store-published builds. Designed mobile-first and security-first, so trust was engineered in from day one rather than bolted on later.
It's exactly the kind of build our mobile app development team ships — native and Flutter apps on secure backends.
The polish that earns user trust starts with research-led UI/UX design.
Money apps run on dependable infrastructure — our cloud solutions keep fintech workloads secure and scalable.
It's how we serve Finance & Lending and Technology & SaaS builders. Picture it: your app live on both stores from one codebase, users funding accounts in two taps over UPI, and a trust story — verifiable reserves — that turns wary first-timers into investors.
Flutter front end, secure backend and payments under one roof, with no integration handoffs to manage.
KYC, authentication and reserve transparency built in, not patched on.
fast to market, built to scale as the user base grows.
in business since 2011, 200+ clients, 50+ apps shipped, and 70% of our work comes by referral.
Official ERPNext Partner
Yes. We build in Flutter, so one codebase ships to both Google Play and the App Store — cutting build time and ongoing maintenance versus running two separate native apps. BitSave launched on both stores this way.
Absolutely. BitSave uses UPI deposits via GPay, PhonePe and PayTM. We also integrate cards, wallets and Play/App Store in-app purchases as needed, so funding feels native to your users.
With KYC-compliant onboarding, secure authentication, and — for BitSave — a proof-of-reserves integration that surfaces real-time, audited holdings. Security is part of the architecture from the first sprint, not a final-week checklist.
Yes. BitSave shipped with Bitcoin-only, BGCI-index and hybrid gold-crypto portfolios — UI and backend — so the app supported real investment strategies, not just buy-and-hold.
It will. We ship performance-optimised Flutter builds, so you get smooth, native-feeling experiences on both platforms without the cost and drift of maintaining two codebases.
It depends on scope, but Flutter's dual-platform efficiency and our release engineering let us get products like BitSave to both stores on a tight, founder-friendly timeline. We agree a fixed scope and honest timeline at the free consultation.
Yes. We stay on for updates, new features, store compliance and scaling — and can host and manage the backend on the cloud as your user base grows.
Get a clear plan, an honest timeline, and a fixed scope. Talk to a real expert today — whether or not you work with us.
Kochi (Kadavanthra & Infopark) · Thiruvananthapuram · across India & overseas · In business since 2011