What Generic Kotlin Agencies Say:
What Protocloud Delivers:
Often multiple rejections 
100% first-submission success rate 
Kotlin app development costs depend on feature complexity, UI requirements, AI integration, and backend scope. Our typical project range: Kotlin MVP (core features, Jetpack Compose UI, Google Play submission) – $5,000–$15,000. Mid-complexity Kotlin app with AI integration and custom backend – $20,000–$60,000. Enterprise Kotlin platform with Kotlin Multiplatform, custom ML models, and automation ecosystem – $60,000–$120,000+. AI feature add-ons are scoped separately at $1,500–$8,000 based on the specific feature and ROI justification. Every project receives a fixed written quote before development starts. No hidden charges, no hourly billing.
Our typical Kotlin development timelines: MVP (5–7 core features, Jetpack Compose, Google Play submission) – 6–8 weeks. Mid-complexity Kotlin app (AI features, custom backend, complex UI) – 10–14 weeks. Kotlin Multiplatform (Android + iOS shared logic) – 12–16 weeks. Enterprise Kotlin platform – 16–24 weeks. Timeline includes: Discovery (Week 1), Figma design (Weeks 2–3), Kotlin development in sprints (Weeks 3–10), QA on 50+ devices (Week 9–10), Google Play submission and launch (Week 10+). We don’t pad timelines – every estimate is based on actual sprint capacity with your dedicated Kotlin team.
Native Kotlin (Android only) is the right choice if: (1) your primary market is Android users specifically, (2) you need maximum access to Android-exclusive APIs (ML Kit, ARCore, Wear OS, NFC, Camera2), (3) you want the best possible Google Play ranking signals, or (4) performance and battery efficiency are critical to your app. Kotlin Multiplatform (KMP) is the right choice if: (1) you need iOS and Android from the same codebase, (2) you want to share business logic (APIs, data models, domain logic) while keeping native UIs, or (3) you’re scaling a development team and want to avoid duplicating backend logic. We’ll give you our honest recommendation during your free strategy session based on your specific project requirements.
Not every Kotlin app benefits from AI – and we won’t recommend it unless the ROI is clear and specific. AI makes genuine sense for Kotlin apps in these scenarios: e-commerce (AI product recommendations increase revenue 25–35%), health apps (ML Kit body pose estimation and activity recognition), logistics (AI route optimisation reduces delivery time 20–30%), content apps (AI personalisation increases session time 45%), and fintech (AI fraud detection and spending analysis). For MVP-stage projects, simple booking apps, B2B tools, or apps with insufficient user data, standard native Kotlin development is the smarter choice. We’ll give you an honest AI feasibility assessment during your strategy call at no cost.
Yes – Java-to-Kotlin migration is one of our core services. The migration approach depends on your codebase: Incremental migration (recommended): We convert your app module by module, shipping Kotlin improvements in stages without disrupting your live user base. Full rewrite: For apps with severe technical debt, performance issues, or where the Java codebase has become unmaintainable, a full Kotlin rewrite is sometimes faster and cheaper long-term. Benefits of migrating to Kotlin: 40% reduction in codebase size, null safety eliminates the most common Android crash type (NullPointerException), access to modern Jetpack libraries (Compose, Coroutines, Hilt, Flow), and significantly faster feature development for your team going forward.
Protocloud provides written guarantees on every Kotlin project: (1) Fixed Price Guarantee – your quoted price is your invoice; we don’t charge extra for in-scope work. (2) Google Play First-Submission Guarantee – if your app is rejected for any reason attributable to our code or submission, we fix and resubmit at zero cost within 5 business days. (3) Performance Guarantee – if your Kotlin app crashes on any of our 50+ test devices at launch, we resolve the issue at no charge within our support period. (4) IP Ownership Guarantee – 100% of your source code is transferred to you on launch day, documented in writing. (5) Post-Launch Support – 3 months of free support including one patch release, Firebase Crashlytics monitoring, and a dedicated WhatsApp support line.
