Mobile App Development

The mobile app partner
for the AI era.

We build iOS, Android, and cross-platform apps with AI woven into the product from day one - on-device intelligence, personalization, and assistants that make the app genuinely useful, not just functional.

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190+
Projects delivered across web, mobile & AI
4.9★
Average client rating
12+
Years building production software

What we build

Every layer of a modern
mobile product

Native iOS & Android
Swift and Kotlin builds for teams that need full platform depth - camera, sensors, background processing, and top-tier performance.
Cross-platform apps
React Native and Flutter for one codebase, two platforms, and faster iteration - without a compromised user experience.
AI-native features
On-device ML, LLM-powered assistants, personalization, and recommendation engines built into the app - not bolted on after launch.
UI/UX design
Interfaces designed against Apple HIG and Material guidelines, tested for real engagement and retention, not just visual polish.
Wearable & companion apps
Apple Watch, WearOS, and fitness-tracker companion apps built to sync cleanly with your core mobile product.
Dedicated app teams
Senior mobile engineers embedded with your team for ongoing feature work, not a rotating cast of freelancers.

Why StartxLabs

How we compare to a typical
app development shop

StartxLabs
Typical agency
Freelance team
AI features designed in from the start
Senior engineers, not junior handoffs
Native + cross-platform expertise in-house
Fixed-scope sprint option available
Post-launch support window included
Full IP transferred on completion

How we work

From kickoff to
app-store launch

Step 01

Discovery

Requirements, platform strategy, and a clear definition of what AI features actually add value.

Step 02

Design

Wireframes, UI design, and an architecture doc reviewed with your team before a line of code ships.

Step 03

Build

Sprints with weekly demos. Feature work, AI integration, and backend built in parallel.

Step 04

Test & harden

Device testing across OS versions, performance profiling, and crash-free rate validation.

Step 05

Launch

App Store and Play Store submission, plus a post-launch support window.

What this looks like

An AI-native mobile
build, end to end

A retail client needed a shopping app that could recommend products in real time, not just display a catalog. We built a React Native app with an on-device recommendation model, a chat-based shopping assistant powered by an LLM, and a FastAPI backend syncing inventory in real time - shipped as a single cross-platform codebase for iOS and Android.

AI-powered retail app

Single codebase
iOS + Android from one React Native build
Real-time
Inventory sync and personalized recommendations
In-app
LLM shopping assistant, not a bolted-on chatbot

Looking for the full breakdown of our mobile engineering stack, engagement models, and platform comparisons?

MOBILE APP DEVELOPMENT SERVICE

FAQ

Common questions about
mobile app development.

Cost depends on platform choice, feature complexity, and whether the app includes AI features like on-device inference or personalization. Most MVP-scope apps fall into a fixed-price sprint; larger builds run as milestone-based engagements. You get a scoped estimate after a 30-minute discovery call, not a generic price list.

Yes. We work with pre-seed startups validating a first release through enterprises scaling an existing app to millions of users. Sprint engagements are specifically structured for startups that need a real, working app fast without over-building.

Yes - this is one of our most common engagements. On-device ML, LLM-powered assistants, recommendation engines, and computer-vision features can usually be integrated into an existing codebase without a full rebuild.

It depends on your user base, budget, and how deep you need to go into platform-specific capabilities (camera, sensors, background processing). We'll give you a direct recommendation in the discovery call rather than defaulting to whichever stack is easiest for us to staff.

Every engagement includes a post-launch support window covering crash triage, OS-update compatibility, and app-store review issues. Many clients move to an ongoing maintenance or Dedicated Team retainer after the initial release.

Ready to build your
next digital product?

Whether you have a detailed specification or just an early idea - we'll help you scope it, challenge the assumptions, and deliver it on time. No pitch decks. Straight to the point.

Get in TouchSee Our Work

What happens next

1

Send us a message

Tell us what you're building or what's broken.

2

Discovery call (30 min)

We ask hard questions. You get honest answers.

3

Scoped proposal

Clear deliverables, timeline, and team in 48 hours.

Contact Us

Tell us about
your project

Whether you have a detailed brief or just an early idea, we will help you scope it, challenge it, and ship it.

  • Agentic AI development and multi-agent systems
  • Generative AI consulting and LLM integration
  • RAG development and custom model deployment
  • Data engineering, MLOps and custom software
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