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Elco Dev

Services

Mobile app development

We build iOS and Android apps and take them all the way to the stores. Because we run apps of our own, launch is part of the job: store listings and screenshots, review, subscriptions, analytics and paid acquisition.

What's included

  • Cross-platform apps in React Native (Expo), or native Swift and Kotlin when the app calls for it
  • App Store and Google Play setup, listings, screenshots and review
  • Subscriptions and in-app purchases with free trials (RevenueCat)
  • Push notifications, offline support and on-device features like camera and health data
  • Product analytics and crash reporting from day one
  • Ongoing releases and support after launch

Tools we use

React NativeExpoSwiftKotlinFirebaseRevenueCatOn-device AI

How it works

  1. 01Free consultation. A 30-minute call about what you want to build, who it's for and what matters most.
  2. 02Scope and quote. A clear plan with the features, timeline and price, so you know what you're getting before we start.
  3. 03Design and build. Short cycles with working builds you can try and regular progress updates along the way.
  4. 04Launch and grow. Store submission or go-live, then analytics, subscriptions and improvements, the same way we run our own apps.

Related work

NicDrop app screenshot
Our product · Mobile app2026

NicDrop

A quit-nicotine app with a taper plan, craving help and an AI coach.

React NativeExpoFirebaseRevenueCat
Starter Set app screenshot
Our product · Mobile app2026

Starter Set

A beginner workout coach built around the gear you already own.

React NativeExpoML KitApple Vision
Liturgical Living app screenshot
Our product · Mobile app2026

Liturgical Living

A free Catholic daily prayer app, native on iOS and Android.

KotlinJetpack ComposeNative iOSAudio
WiseWallets app screenshot
Our product · Mobile app2024

WiseWallets

A zero-based budget whose transactions are encrypted on the phone.

On-device encryptionBank syncSubscriptions
Crohn's Food Tracker app screenshot
Our product · Mobile app2017

Crohn's Food Tracker

A food and symptom diary for Crohn's, colitis and IBS, in the stores since 2017.

MobileSubscriptionsHealth data
Penalty Verdict screenshot
Client project · Mobile app2022

Penalty Verdict

Football fans vote on referee calls in real time.

IonicCapacitorNode.jsFirebase

Common questions

Should my app be native or cross-platform?

Most apps are best built once in React Native and shipped to both stores. We go native (Swift, Kotlin) when an app leans on platform features, audio or heavy performance needs, as we did for Liturgical Living.

Do you handle the App Store and Google Play submission?

Yes. We set up the listings, screenshots, privacy details, in-app purchases and review, the same way we launch our own apps.

Can you add subscriptions and a free trial?

Yes. We use RevenueCat for subscriptions, trials and lifetime purchases across both stores.

Have an app or platform in mind?

Book a free 30-minute call. You'll leave with a clear idea of scope, timeline and cost.