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Vynnter

Mobile Engineering

Mobile App Development

Most mobile apps fail the same way: they demo well and degrade in production. Offline states corrupt data, background tasks die silently, list scrolling stutters at real data volumes, and the app that passed review at 50 test users falls over at 5,000 real ones. We build mobile apps as engineered systems — native by default, cross-platform where the trade-off genuinely favours it.

We are an India-based engineering team building for startups and enterprises. A tightly scoped single-platform app starts from ₹1 lakh (ex-GST); a production app with its own backend, authentication, and admin panel typically runs ₹4–10 lakh. Every engagement ends with you owning the repositories, the signing keys, and the store listings.

Native iOS development in Swift

We build iOS apps in Swift with SwiftUI, dropping to UIKit where a screen's performance or platform behaviour demands it. Native means engaging the platform properly: background execution budgets, push via APNs, StoreKit payments, Keychain-backed credential storage, and the app-review realities that decide whether your launch date holds.

Performance is treated as a feature: cold-start time, scroll hitching, and memory pressure are measured with Instruments before release, not investigated after one-star reviews.

  • SwiftUI & UIKit
  • Offline-first data & sync
  • Push notifications (APNs)
  • StoreKit & payments
  • Background processing
  • App Store release automation

Native Android development in Kotlin

Android work is Kotlin with Jetpack Compose, structured around lifecycle-safe architecture (ViewModel, coroutines, Flow) so rotation, process death, and aggressive battery managers don't corrupt state. We engineer for the device spread that Indian consumer apps actually meet: low-RAM handsets, patchy networks, and OEM-modified Android versions.

Play Store delivery is automated — signed bundles, staged rollouts, and crash-gated promotion — so shipping a fix is a routine, not an event.

  • Kotlin & Jetpack Compose
  • Coroutines & Flow
  • Low-end device performance
  • Firebase Cloud Messaging
  • Play Store release automation
  • Crash & ANR monitoring

Kotlin Multiplatform: shared logic, native UI

Kotlin Multiplatform is the right call when your business logic is complex and your UI must stay native: one tested implementation of networking, caching, validation, and sync, with SwiftUI and Compose screens on top. You avoid the double-implementation bug class without giving up platform-native feel.

We scope the shared layer deliberately — domain and data, not UI — because KMP fails when teams force it to be Flutter. The result is a codebase either platform team can own later.

  • Shared domain & data layers
  • Ktor networking
  • SQLDelight local storage
  • Native SwiftUI/Compose UI
  • Incremental KMP adoption

Flutter, where it genuinely fits

Flutter earns its place when speed-to-both-stores dominates and deep platform integration doesn't: MVPs validating a market, internal tools, content-led consumer apps. We build Flutter with the same discipline as native — typed models, layered architecture, golden tests — and we'll tell you plainly when Flutter is the wrong choice for your roadmap, because migrating away later costs more than choosing right now.

  • Flutter & Dart
  • Platform channels for native APIs
  • Single codebase, both stores
  • MVP-speed delivery

Taking over and modernizing existing apps

We also inherit apps other teams built: crash-prone codebases, abandoned projects, apps stuck on frameworks two majors behind. The engagement starts with an architecture and stability review, then a prioritised plan — stabilise crashes first, then pay down the debt that blocks your next features. You get honest findings in plain language, including the option we'd choose in your seat.

  • Codebase audits
  • Crash stabilisation
  • Dependency & OS upgrades
  • Incremental rewrites

Every mobile engagement follows the same path: a discovery call, a fixed-scope estimate with honest trade-offs, a weekly update with a test build on your own device, and store submission handled by us. Post-launch, maintenance runs 15–25% of build cost per year — monitoring, OS updates, and feature work included.

Discuss your mobile project

Tell us what you're building and who it's for. We respond within one business day with questions and a proposed 30-minute technical call — no sales deck.

Send a project inquiry