Kotlin and Android development company · UK

Kotlin and Android Development Company in the UK

Work with a UK-focused Kotlin and Android development company for smooth app experiences, reliable releases, and mobile products ready for real users. Techsleight Labs plans, designs, builds, QA-tests, launches, and supports production software with senior engineers, weekly demos, and clear delivery ownership.

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  • Strategy, build, QA and launch in one team
  • Fixed-price projects after discovery
  • Code and IP owned by you

Capabilities

Kotlin and Android capabilities we bring to your product.

Developers who follow Google’s current Android guidance — and know how to get an older Java and XML-layout app there without a rewrite.

Jetpack Compose

Declarative UI with Compose and Material 3, previews and state hoisting, and interop with existing XML views while screens move across.

Modern Android architecture

UI, domain and data layers, ViewModels with unidirectional data flow, Hilt for dependency injection, and coroutines with Flow for asynchronous work.

Device fragmentation

A test matrix across Android versions, screen sizes, foldables and manufacturer skins — including the battery savers that kill background work on some brands.

Google Play releases

App bundles, Play App Signing, testing tracks, staged rollouts and the yearly target API update, with Data safety answers that match what the app really does.

Performance and stability

Baseline Profiles for faster start-up, R8 shrinking, ANR and crash triage from Android vitals, and leak hunting on low-memory devices.

Kotlin beyond Android

Ktor or Spring Boot services in Kotlin, and Kotlin Multiplatform to share business logic with iOS where it genuinely saves work.

What we build

What we build with Kotlin and Android.

The Android work UK teams bring us most — usually for users on a far wider range of devices than the office test phone.

Retail and logistics

Scanner and handheld apps

Picking, stock-take and proof-of-delivery apps for rugged handhelds, with hardware barcode scanners, offline queues and kiosk mode.

iOS-first products

Android that matches your iPhone app

Give Android users the same features and polish, designed with Material conventions rather than copied iOS screens.

Health and fitness

Health Connect and wearables

Read activity and sleep data through Health Connect with the right permissions, and pair with Bluetooth devices reliably across manufacturers.

Established apps

Java to Kotlin migration

Convert module by module, replace AsyncTask and RxJava with coroutines and Flow, and move XML screens to Compose when they next change.

Server-side teams

Kotlin back-end services

APIs and background workers in Ktor or Spring Boot, so app and server developers share one language and some of the same data models.

Apps behind on SDK levels

Target API upgrades

Move to the current target SDK before a Play deadline: permission changes, edge-to-edge layouts, background limits and library updates.

Technology stack

Technology stack.

The tools that usually sit around Kotlin and Android in the projects we join. We fit into your stack — this is where we are most at home.

Core

KotlinJetpack ComposeMaterial 3Coroutines and Flow

Architecture

ViewModelHiltNavigation ComposeWorkManager

Data

RoomDataStoreRetrofit and OkHttpFirebase

Testing

JUnit and MockKCompose UI testsEspressoFirebase Test Lab

Build and release

Gradle (Kotlin DSL)Play ConsoleFastlaneFirebase Crashlytics

Kotlin beyond Android

KtorSpring BootKotlin MultiplatformPostgreSQL

Pricing

Kotlin and Android development pricing.

Start with discovery, move to a fixed-price build, or run a dedicated team for a longer roadmap.

Kotlin and Android discovery sprint

From £2,000

Architecture, roadmap, cost planning, and project-risk validation

  • A short strategy sprint covering technical scope, user flows, delivery plan, and budget range.
Most common

Managed Kotlin and Android development project

Fixed quote

MVPs, rebuilds, SaaS platforms, dashboards, portals, and business-critical launches

  • Product planning, UX, engineering, QA, deployment, and post-launch support under one delivery owner.

Dedicated Kotlin and Android development team

From £9,500 per month

Longer roadmaps, multi-sprint delivery, and product teams that need extra senior capacity

  • A stable engineering pod with weekly demos, sprint planning, code review, and transparent reporting.

Prices are in GBP. Every estimate is confirmed in writing after a discovery call — the figures above are where engagements start, not a quote.

How we deliver

How we deliver your Kotlin and Android project.

Seven stages, the same on every project. The length of each one changes with the work; skipping one never saves time for long.

  1. 01

    Product and technical discovery

    We map your Kotlin and Android product goals, users, integrations, compliance needs, timeline, and commercial priorities before planning the build.

    Goals, users and constraints agreed

  2. 02

    Architecture and delivery plan

    You get a practical Kotlin and Android roadmap with milestones, team shape, risks, estimates, and the first release path.

    Roadmap, team and estimate

  3. 03

    Design, build, and QA

    Our team ships the Kotlin and Android product in controlled sprints with code review, testing, demos, and visible progress every week.

    Tested software every sprint

  4. 04

    Launch and improvement

    We handle deployment, analytics, monitoring, handover, and post-launch iterations so your Kotlin and Android platform keeps improving.

    Live, monitored and documented

Why Techsleight

What working with us is actually like.

No inflated numbers — just how we run projects, and what you can hold us to.

Product engineering, not ticket-taking

We ask what the software is for before we estimate it — and we will tell you when something should not be built, or should be bought instead.

AI where it earns its place

LLM features, retrieval and automation built with evaluation, guardrails and cost controls, and plain software where that is the better answer.

Full-stack under one roof

Design, frontend, backend, mobile, cloud and QA in one team, so nothing falls between suppliers.

UK-focused delivery

UK business hours, estimates in pounds, and a contract with a UK company. Our engineers are based in the UK and India.

Flexible engagement

A fixed-scope project, dedicated developers or a monthly retainer — and you can move between them as the work changes.

You own everything

Code, IP, cloud accounts and documentation are yours from day one. We sign an NDA before discovery if you need one.

Support after launch

We stay on for fixes, upgrades and new features, or hand over cleanly to your in-house team with the documentation to match.

Relevant work

Related product work.

We do not have a published Kotlin and Android case study yet — these show the kind of product work our engineers join.

All case studies
Fintech · Mobile

Sendora

Mobile-first money transfer and card app for a cross-border fintech.

React NativeNode.jsMapboxStripe
Read the case study
Health & Fitness · Mobile

Workout Book

Fitness app for workouts, nutrition logging and progress tracking.

React NativeNode.jsFirebasePostgreSQL
Read the case study
Healthcare · eCommerce

Cyber Medic

Online pharmacy and lab-test booking app with prescriptions and delivery.

React NativeNode.jsStripeFirebase
Read the case study

FAQs

Questions we get asked.

Straight answers on scope, cost, timelines and how we work. If yours is not here, ask us directly.

Ask us a question

What does a Kotlin and Android development company do?

A Kotlin and Android development company plans, designs, builds, tests, deploys, and supports Kotlin and Android software. At Techsleight Labs, that can include discovery, architecture, UI/UX, API integration, QA, cloud deployment, analytics, and post-launch roadmap support.

Do you work with companies in the United Kingdom?

Yes. This Kotlin and Android development company page is focused on United Kingdom businesses. We support UK collaboration with clear written updates, weekly demos, and planned handoff points so distributed teams can move quickly.

How much does Kotlin and Android development cost?

Kotlin and Android development pricing depends on scope, integrations, user roles, design depth, compliance needs, and launch timeline. Discovery sprints start from £2,000, dedicated teams start from £9,500/month, and managed projects are quoted after scope validation.

Can you build a complete Kotlin and Android product, not just provide developers?

Yes. You can use Techsleight Labs as a full Kotlin and Android development company for strategy, design, engineering, QA, deployment, and support. You can also start with a small discovery sprint before committing to the full build.

Can you improve an existing Kotlin and Android application?

Yes. We often join existing Kotlin and Android products to fix performance, improve architecture, add features, stabilise releases, modernise UI, or prepare the system for scale. We begin with a focused audit so the first sprint is practical.

Who owns the code and product IP?

You own the code, documentation, product IP, design assets, and infrastructure setup created for your project. We can sign an NDA before discovery and work inside your repositories, cloud accounts, and project tools.

How fast can a Kotlin and Android development project start?

Discovery can usually begin within a few working days of the first call, and most projects start within 5–7 working days of sign-off. Larger builds usually need a short planning sprint to confirm scope, architecture, milestones, risks, and the right team before full development begins.

Do you provide post-launch Kotlin and Android support?

Yes. After launch, we can continue with monitoring, bug fixes, performance improvements, security updates, roadmap features, analytics, and handover support. Many clients keep a monthly retainer after the main release.

Start a project

Planning a Kotlin and Android project?

Tell us what you are building with Kotlin and Android. We will reply within one working day with questions, a first view on approach and the next step.

What happens next

  1. 1A senior engineer reads your brief within one working day, and replies with questions or a first view.
  2. 2A 30-minute call to understand the goal, constraints and what good looks like — no sales script.
  3. 3A written proposal with scope, milestones, team and a GBP estimate you can take to your board.

Techsleight Labs is a trading name of Krapton IT Consultancy.

Reply within one working day. NDA on request. Your details are used only to respond — privacy policy.

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