Promettis
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Mobile & App Development

One codebase, native-grade experiences on iOS and Android.

We design and ship mobile applications that feel native, work offline, and sync in real time. From MVP to App Store launch, we handle the full lifecycle.

  • React Native
  • Expo
  • Swift
  • Kotlin
  • Firebase
Discuss this serviceSee related work
services/app-development.ts
1export const appDevelopment = {
2  title: "Mobile & App Development",
3  summary: "Cross-platform mobile apps with native-grade performance and polish.",
4  focus: [
5    "React Native",
6    "Offline-first",
7    "App Store launch",
8  ],
9  stack: ["React Native", "Expo", "Swift", "Kotlin", "Firebase"],
10  deliverables: [
11    "iOS & Android apps",
12    "Push & analytics",
13    "Store submission",
14    "Release pipeline",
15  ],
16};

What this actually includes

// 01

Cross-platform builds

A single React Native codebase that ships to both iOS and Android without compromise.

// 02

Real-time & offline

Local-first data, background sync, and push notifications that keep users engaged.

// 03

Store-ready delivery

App Store and Play Store submission, signing, and release automation handled end to end.

What you walk away with

  • iOS & Android apps
  • Push & analytics
  • Store submission
  • Release pipeline

Also worth a look

Web Development

Lightning-fast, accessible web platforms engineered to convert and scale.

Web & App Security (VAPT)

Offensive-security testing that finds vulnerabilities before attackers do.

Cloud & DevOps

CI/CD, containers, and infrastructure-as-code for zero-downtime releases.

Have an idea?
Let’s build it.

Tell us what you are trying to build and what has to be true when it launches. If we are not the right fit, we will say so and point you somewhere better.

Get in TouchExplore Projects

hello@promettis.com · +92 300 790 3309

start-project.ts
1const project = await promettis.start({
2  idea: "the one you keep coming back to",
3  stage: "napkin sketch" | "legacy rewrite" | "scale-up",
4  budget: "let's talk about it",
5});
6
7// we reply within one business day