Sisnex

Mobile software · Sheridan, Wyoming

We design, build and maintain mobile apps.

Sisnex is a software company that builds native and cross-platform applications for businesses, and develops its own products for the App Store and Google Play.

Discuss a project What we do

Services

  1. 01

    iOS development

    Native iPhone and iPad apps in Swift and SwiftUI, built to Apple's Human Interface Guidelines and ready for App Store review.

  2. 02

    Android development

    Native Android apps in Kotlin and Jetpack Compose, tested across the device sizes and OS versions your users actually have.

  3. 03

    Cross-platform apps

    One codebase for iOS and Android with Flutter, when time to market and budget matter more than platform-specific detail.

  4. 04

    Backend and APIs

    The APIs, databases and admin tools behind the app — designed for mobile clients, with authentication, push notifications and payments.

  5. 05

    Product and interface design

    Product definition, user flows and interface design, delivered as clickable prototypes you can test before development starts.

  6. 06

    Maintenance and support

    Monthly plans that keep a production app current — OS updates, dependency upgrades, crash monitoring and small improvements.

How we work

Every engagement starts with a written scope: what the app must do, which platforms it runs on, what it connects to, and how we will know it is finished. You get a fixed quote or a monthly rate before any work begins.

We work in short iterations and ship test builds through TestFlight and Google Play internal testing, so you use the app on your own device from the first weeks — not at the end.

When the app is ready, we handle the store submission, and we stay available afterwards for updates, OS compatibility releases and fixes.

Our own apps

Alongside client work, Sisnex develops and publishes its own applications. They are distributed through the Apple App Store and Google Play. Where an app offers a subscription on the web, the price and billing period are shown before purchase.

Company

Legal name
Sisnex LLC
Entity
Limited liability company, Wyoming
State filing ID
2026-002061431
Formed
August 20, 2026
Principal office
30 N Gould St, Ste N
Sheridan, WY 82801
United States