Custom Mobile Apps, Engineered for Australian Founders Who Refuse Technical Debt
BATSTACK builds Flutter, React Native, and native iOS/Android apps with a 100% custom codebase — no page-builders, no vendor lock-in. Ship your MVP in 4–6 weeks with sub-second APIs, transparent Git history, and a shared Jira board your whole team can watch in real time.
Engineering-first — not another bloated agency
100% custom codebase
Every line is written for your product — no WordPress plugins, no low-code black boxes you can’t extend. Zero vendor lock-in.
Native-grade performance
60fps interactions, cold-start under 2 seconds, and sub-second API responses as a hard budget — not an afterthought.
Transparent by default
GitHub repo, Jira board, and a Slack channel from day one. Watch commits land as they happen.
Fixed scope, honest timelines
A costed sprint plan before we write code — MVP in 4–6 weeks, or a phased enterprise roadmap. No surprise invoices.
Offshore economics, onshore standards
Sydney/Melbourne-grade engineering at a Sri Lankan cost base — the margin goes into your product, not an agency’s overhead.
The full engineering stack — mobile to cloud
Native Mobile
Native iOS in Swift and native Android in Kotlin for apps that need platform-perfect performance, deep hardware access, and App Store / Play Store polish.
Cross-Platform Excellence
Flutter and React Native for a single, maintainable codebase across iOS and Android — ideal for MVPs and fast-moving product teams.
Resilient Microservices & APIs
Backends in Node.js and Go, GraphQL and REST APIs, and PostgreSQL data layers — designed for horizontal scale, real-time sync, and offline-first mobile.
Enterprise Security & Cloud
Deployed on AWS with Cloudflare edge, CI/CD pipelines, automated testing, and secrets management. Encrypted in transit and at rest.
A transparent 4-phase delivery framework
Discovery
A 30-minute technical discovery call becomes a costed scope — user flows, architecture, tech-stack decisions, and a fixed sprint plan. You leave knowing exactly what, when, and how much.
Interactive Prototype
A clickable, real-data prototype before full engineering begins — so you validate the product and align stakeholders before the expensive part starts.
Agile Sprint Engineering
Weekly sprints, demoed live. Every sprint ships working software to a staging build you can install, with full Git + Jira transparency throughout.
Deployment & SLA Support
Store submission, production launch on AWS/Cloudflare, monitoring, and a defined post-launch SLA for maintenance, updates, and scaling.
What will your build actually take?
Engineering estimates confirmed in Discovery; App Store review time excluded.
| MVP / Launch | Full-Scale Enterprise | |
|---|---|---|
| Timeline | 4–6 weeks | 12–16 weeks+ |
| Scope | Core flows, cross-platform, single backend service | Multi-module app, role-based access, integrations, admin portal |
| Stack | Flutter / React Native + Node/PostgreSQL | Native + microservices (Go/Node), GraphQL, multi-region cloud |
| Best for | Founders validating a market, seed-stage products | Funded scale-ups & mid-market enterprises |
| You get | Store-ready app + repo + docs | Platform + SLA + dedicated squad |
Frequently asked questions
Who owns the intellectual property and source code?
You do — 100%. On final payment, all IP, source code, and design assets transfer to you in writing. You hold the GitHub repository from day one, so your product is never hostage to us.
How does the time-zone difference work with Australia?
Sri Lanka is UTC+5:30, roughly 4.5–5.5 hours behind AEST/AEDT. Our afternoon overlaps your Australian afternoon and evening for standups and demos, plus asynchronous progress while you sleep — so work never fully stops.
Do we get access to the code repository during the project?
Yes. You get the GitHub repo, the Jira board, and a Slack channel from the first sprint. You can review every commit, pull request, and build in real time — full transparency, no walled garden.
What happens after launch — do you provide maintenance?
Yes. Every engagement ends with a defined post-launch SLA covering bug fixes, OS-version updates, security patches, and feature iterations. You choose a retainer tier or engage sprint-by-sprint.
Can you really deliver an MVP in 4–6 weeks?
For a well-scoped MVP, yes — because Discovery locks the scope and our prototype-first workflow removes rework. Enterprise platforms run 12–16 weeks+ on a phased roadmap. We commit to timelines only after Discovery, never before.
Ready to build your app?
Book a 30-minute technical discovery call — you’ll leave with a costed scope, a stack recommendation, and a fixed sprint plan.
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