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Four pieces of information are enough: the app's goal and target audience, the main features it needs, the target platform (iOS, Android or both), and a rough idea of budget and deadline. If you already have wireframes, drafts or references to similar apps, attach them: they help freelancers give a precise quote.
It depends on the project. A native app (Swift for iOS, Kotlin for Android) guarantees top performance and full access to device features, but requires two separate builds. A cross-platform solution (Flutter, React Native) cuts time and cost with a single codebase for both platforms. If you're not sure, describe the app's goal in your request: freelancers will recommend the best approach.
Look at three concrete things: exactly what gets delivered (source code, graphic assets, store publishing), how many revisions are included, and what testing steps happen before release. Favor those who show already-published apps, ideally similar to yours.
You usually receive: the full source code on a repository, graphic assets (icons, splash screens, images), technical documentation for future changes and — if requested — publishing the app on the App Store and/or Google Play Store with the related developer account setup. State in the brief whether you want the freelancer to also handle publishing: it's a service not everyone includes by default.
It depends on complexity: an MVP with essential features typically takes 6-10 weeks, while a complete multi-platform app with backend and integrations can take 3-6 months. Stating the main features in the brief helps freelancers give you a more accurate estimate.
If your budget is limited, it's worth starting with the platform where your target audience is concentrated: iOS generally leads in premium segments and markets like the US and Northern Europe, while Android has a broader global user base. Alternatively, a cross-platform solution (Flutter, React Native) lets you cover both platforms from day one with a single build.
Not every freelancer includes this service by default: state in the brief whether you want the freelancer to also handle creating the developer accounts (Apple Developer Program, Google Play Console) and the entire publishing process, including the reviews required by the stores.
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