Mobile app development services: from idea to store, on your accounts.

What should you prepare before you have an app built?

Mobile app development services turn an idea into a secure, maintainable product that iOS and Android users can install on their phones. Bring these points to the first call, and scope and fee become clear much faster.

• A one-sentence goal: whose problem will the app solve?
• Example apps: three to five apps you like or compete with, and why.
• Must-have features: the three to five actions the first release cannot do without.
• Existing systems: website, CRM, ERP, payment provider or stock software.
• Brand files: logo, colours and, if you have one, an app icon.
• Company details: your legal name and D-U-N-S number for the developer accounts. No number yet? Then we start the application together.
• Budget range and target date: they let us draw a realistic scope.

Not everything has to be ready; we fill the gaps together during discovery. Some work also belongs to our other services. For example, the website that promotes your app is a web design job, while product, cart and campaign logic sit under ecommerce consulting. If your logo, app icon and colour system are not settled yet, starting with brand identity work also speeds up the app design.

Native, cross-platform or PWA: which one fits your app?

The right technology depends on what the app has to do and on your budget. That is why we choose it after the scope, not before. Here is a rough comparison:

• Native (Swift, Kotlin): a separate codebase for each platform. It gives the most control for features tied closely to the device, such as camera, Bluetooth, background tasks or heavy animation. However, two codebases also mean twice the maintenance.
• React Native: iOS and Android apps from one codebase. According to the official docs, its components run on the same views as Android and iOS. The docs also recommend a framework such as Expo for new projects.
• Flutter: one codebase in Dart. Flutter compiles release builds directly to machine code and draws the interface with its own engine.
• PWA: a web app that runs in the browser and installs to the home screen. It reaches every device from one codebase, and since iOS 16.4, web apps on the home screen can receive push notifications.

In practice, cross-platform strikes the best balance of budget and speed for most business apps. On the other hand, we recommend native for apps with deep hardware access or a strongly platform-specific experience. For content-heavy projects that need no store listing and a fast start, a PWA is a serious option. You can measure your current site’s mobile experience with our mobile-friendly test, and our article on mobile-first design explains the design approach.

From idea to MVP: how do we define the scope?

The most expensive mistake in a new app is squeezing every feature into the first release. So we start with discovery: who will use the app, which problem does it solve, and which three actions prove its value? Once the answers are clear, we write user stories, the screen list and acceptance criteria into a scope document.

Next, we define the MVP, the smallest version that tests the idea with real users. In a booking app, for example, choosing a service, picking a time slot, notifications and cancellation go into the first release. Ratings, a loyalty scheme and multi-location reports wait for phase two. As a result, most of your budget goes to features that people actually use.

Design follows the same order: wireframes first, then a clickable prototype, and the visual design last. We do not start development until you have tried and approved the prototype on your phone. That is because changing a screen in design costs far less than changing it in code. After that, we work in short sprints and send a working build to your test device at the end of each one. Our guide to agile project management explains this way of working. If you are comparing design proposals, our UI/UX design services checklist also helps.

How do backend, admin panel and integrations shape the budget?

The screens users see are only half of the job. The other half stays invisible. It covers the backend behind accounts, data and business rules, your team’s admin panel and the links to outside services. Many proposals leave this part vague. In our scope document, by contrast, every integration has its own line.

• Identity and accounts: email, phone or social login. If an app offers a third-party login, Apple also asks for an equivalent option that limits data collection (Guideline 4.8).
• Notifications: push infrastructure for iOS and Android, with segment and timing rules.
• Payments: by default, the store’s own billing for digital content and subscriptions; card payments or Apple Pay for physical goods and services. Apple’s Guidelines 3.1.1 and 3.1.3(e) and Google Play’s payments policy draw this line. There are regional exceptions, however: in the US and the EU, external payments are possible under extra terms and fees.
• Business systems: CRM, ERP, accounting, maps and shipping services.

We also choose the backend language and architecture to match the scale; our Python vs Go comparison explains the reasoning. If your app will share customer data with your website, our guide to CRM and ERP integration is a good starting point. In short, the clearer the backend design, the easier it becomes to add features later.

How do you add AI features to a mobile app?

Smart search, summaries, a chat assistant, photo recognition or personal recommendations are now ordinary app features. We build them in one of two ways.

• On the device: Apple’s Foundation Models framework runs on iOS, the ML Kit GenAI APIs (Gemini Nano) on Android. Data stays on the phone, and there are no per-use fees. However, they only work on supported devices and suit short tasks.
• Cloud models: services such as OpenAI, Google Gemini or Anthropic Claude are more capable. In return, they charge per use, and the data goes to the provider.

With the second route, privacy comes first. Apps that share personal data with a third-party AI service must say so clearly. They also need the user’s explicit permission before sharing, as Apple’s Guideline 5.1.2(i) requires. So we name the provider, the data sent and the purpose on the permission screen. The same details go into the privacy labels and the Data safety form.

To keep costs in check, we set quotas and spending caps per user and limit the model to a narrow task. Finally, we suggest trying AI with one small feature first and growing it only if it really helps your users.

How does publishing on the App Store and Google Play work?

Store launch is not a last-minute task. Our first rule is simple: you open the developer accounts in your company’s name and invite our team with a role. The person who opens them must be authorised to sign for the company. On Apple’s side, the Account Holder accepts the agreements and gives the team roles such as Admin or App Manager. In Play Console, you likewise invite users and set permissions per app. Both stores ask organisations for a D-U-N-S number. Because getting one can take time, we help you start that application in week one.

Apple’s App Review Guidelines back this up (Guideline 5.2.1). The app should come from whoever owns or has licensed the intellectual property and other relevant rights. Apple also rejects template-built apps that the content owner does not submit from its own account (Guideline 4.2.6). Review times then differ between the stores:

• App Store: Apple states that, on average, it reviews 90 percent of submissions in less than 24 hours. If your app has a login, the review team needs a demo account. With Apple’s prior approval, a full-featured demo mode can replace it.
• Google Play: review can take up to seven days, or longer in exceptional cases, for some accounts. Also, personal accounts created after 13 November 2023 must run a closed test before launch. It needs at least 12 testers who stay opted in for 14 days in a row.

If a rejection comes, we read the reason, fix the issue and resubmit. When we believe a decision is unfair, we use Apple’s App Review Board appeal. Meanwhile, one of the most common rejection reasons is an app that simply wraps an existing website. Apple expects features, content and interface that go beyond a repackaged website (Guideline 4.2).

Privacy, GDPR and store disclosures: what does your app collect?

An app can reach sensitive data on a phone, from the camera to location. So we place privacy on the first day of design, not the last day before launch. We ask for each permission on the screen that needs it, with a clear purpose text. Apple likewise expects apps to request only data relevant to their core function and to explain the use fully in purpose strings.

The stores also ask for these disclosures:

• App Store privacy labels: the data your app and any third-party SDKs inside it collect. Apple needs this information to accept new apps and updates, and tracking for advertising also requires App Tracking Transparency permission.
• Google Play Data safety form: mandatory for every published app, including apps that collect no data, and it needs a privacy policy link.
• Account deletion: if users can create an account, both Apple and Google ask for an in-app way to delete it. Google also expects a web link for deletion requests.

Beyond store rules, the privacy law of your users’ countries applies. In the EU, the GDPR requires data protection by design and by default. When our team hosts or maintains a backend with personal data, you also need a written processing agreement. Because our company operates in Turkey, EU clients also add standard contractual clauses. Lawyers draft these legal texts. We supply the technical details and manage the process with the support of the lawyers we work with. For the basics, read our guide to GDPR-compliant websites.

How long do mobile app development services take, and what drives total cost?

Time and cost depend less on the number of screens than on the complexity of the business rules. Even a two-screen app is a big project if it includes payments, several user roles and live location. Therefore we give a firm timeline only after discovery, together with the written scope. Any date given before the scope is clear can only be an estimate.

These are the items that stretch timelines most:

• Unclear scope: new features added throughout development.
• External dependencies: payment provider approvals, enterprise API access and the D-U-N-S application.
• Content: copy, images and product data that arrive late.
• Store process: the closed testing rule, review time and possible rejection rounds.

We also discuss the total cost of ownership up front. Besides development, it includes the yearly Apple Developer Program membership and the one-time Google Play Console registration fee. It also covers hosting and databases, services such as push, SMS and maps, and a yearly maintenance budget. You pay store and service fees from your own accounts, so no part of the infrastructure depends on us. To see our fixed-scope web options, visit the packages page. For an app, we send scope and fee in writing after a first call.

Why does an app need maintenance after launch?

An app does not end on launch day, because operating systems, store rules and the libraries you use change every year. For example, under Google Play’s target API level requirements, new apps and app updates must target Android 16 (API level 36) from 31 August 2026. Existing apps must target at least Android 15 (API level 35). Otherwise, they disappear for new users whose devices run a newer Android version than the app targets. As a result, an app that nobody updates quietly loses reach.

In addition, a new rule applies from 30 September 2026 in Brazil, Indonesia, Singapore and Thailand. There, certified Android devices need apps from a registered, verified developer, including apps distributed outside Play. Google plans to expand the rule worldwide in 2027.

Our maintenance plan covers the following:

• Version compatibility: testing on new iOS and Android versions, plus target API and SDK updates.
• Bugs and crashes: we monitor crash reports and fix critical issues first.
• Security: library updates, server patches and regular backups.
• Measurement: analytics events, the conversion funnel and store statistics.

Growth after launch belongs to the plan too. We set up the ASO basics for the store listing: title, description, screenshots and keywords. You can tag campaign links with our UTM builder and add a download link to print materials with the QR code generator. To bring traffic to your app, our Google Ads management and SEO consulting services work under the same strategy.

What should you check before hiring mobile app development services?

Comparing proposals by total price alone is misleading. The same figure can mean a product with backend and maintenance at one company and screen design only at another. Before you decide, we suggest asking these questions:

• Ownership: in whose name are the code repository, store accounts, servers and domain?
• Scope: are the screen list, integrations and acceptance criteria in writing?
• Testing: does the plan include TestFlight or a closed test on real devices?
• Maintenance: how will updates, bug fixes and target API work run after launch?
• Experience: has the company built software of similar complexity before?

We write the answers to these questions into the contract. Talha Aslan, a digital marketing expert, Google Partner and full stack developer, owns the strategy and the outcome. On the software side, our team has built SaaS platforms, CRM and automation systems. In the first call, we listen to your idea and tell you openly which technology fits and where the risks are. Also, if a project is not a good fit for us, we say so. You can see our work on the references page or send us a message to talk about your project.