App Development Company: iOS and Android Apps Built to Grow

An app development company designs, builds and ships mobile apps for iOS and Android, and the good ones also get the app ready for the store and for growth. For a funded app company, that means the code, the backend, the analytics, the attribution setup, the paywall and the store assets, not just screens that run on a phone. ApsteQ builds apps in-house and runs the growth side as well, so the people choosing the tracking plan and the subscription flow are the same people who will later buy installs and fix retention. You get a version one that can be measured from the first install. The common failure is a build shop that hands over a working app with no event tracking, no attribution SDK and no store listing strategy. Marketing then starts blind, and the fix costs more than doing it during the build.

The cost of a mobile app is driven by scope, not by a rate card. The main drivers are how many platforms you ship, how many user roles and screens the app has, whether you need accounts, payments or subscriptions, which third-party services connect to it, whether there is a backend and admin panel, and how much design and animation polish version one needs. Data-heavy features such as real-time chat, maps, video or AI add the most uncertainty. Compliance work, such as store review rules and privacy disclosures, adds time too. We do not publish prices, because two apps that look similar can differ several times over once integrations are counted. After a scoping call we quote version one per project, with a clear list of what is in and what waits. The most expensive outcome is usually not the first build but a rebuild, so cutting scope is cheaper than cutting corners. Our cost calculator and cost guide show the hours behind each feature.

Choose by where your users are and what the app must do. Native iOS (Swift) and native Android (Kotlin) give the best access to device features and the smoothest performance, but you build and maintain two codebases. Cross-platform frameworks such as React Native and Flutter share most of the code across both platforms, which usually shortens the build and keeps the two apps in step. Pick iOS first if your audience is mostly in the US, UK or other markets where it dominates paying users, and Android first if your audience is in India, Southeast Asia or Latin America. Pick native when the app leans on heavy graphics, advanced camera or sensors, or very tight performance. Pick cross-platform for most subscription, marketplace, content and social apps. Whatever you choose, the growth stack should be identical on both: the same events, the same attribution and the same paywall logic, so the numbers compare cleanly across stores.

Marketing-ready means that on launch day you can answer four questions: where did each install come from, what did that user do next, who paid and who did not, and which store page or ad drove them. To answer those, the app ships with an analytics SDK and a defined event plan, an attribution or mobile measurement setup, a paywall or monetisation layer that can be tested, and deep links that carry the campaign through install. On the store side it ships with a keyword-informed listing, screenshots that match the first screens of the app, and the privacy labels each store requires. It also has push and email permissions designed into onboarding, not bolted on later. Retrofitting this after launch means resubmitting builds and losing the first cohort of users, whose data you can never recover. Building it in from day one costs a small share of the build and makes every later campaign cheaper to judge.