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Agency Renaissance

Mobile App Development

We design and build user-friendly mobile apps for iOS and Android that match your brand's voice.

Mobile App Development

What we offer

  • iOS and Android support
  • User-focused interface
  • Store release process

What does mobile app development cover?

Mobile app development is the whole job of carrying a product used with a few taps on a phone from the idea stage to the store page. It is more than writing code: understanding what the user needs, designing screen flows, designing the interface, deciding where data will be kept and publishing the app in line with the App Store and Google Play rules are all part of the process.

We usually handle an iOS and Android app project under these headings:

  • Discovery and scope: the target user, core scenarios and what will and will not be in the first version.
  • User experience: screen flows, wireframes and a clickable prototype.
  • Interface design: brand colors, typography, icons and components that fit the habits of both platforms.
  • Development: the app itself, backend services and, if needed, an admin panel.
  • Testing and release: trials on different devices, preparing the store pages and the review process.
  • After launch: bug tracking, compatibility with new operating system versions and new features.

App or web app?

Not every idea needs an app on the store. If your users will open the product once or twice a month and no device features such as notifications, camera or location are needed, a web app that runs in the browser goes live faster and needs less maintenance.

Investing in mobile app development makes sense when you need regular use, push notifications, offline operation, access to device hardware or visibility on the store. We talk through this distinction openly in the first meeting. If the web side is a better fit, we point you to custom web applications; in some projects the two work together: the customer uses the app on the phone and your team uses a web-based panel.

Which businesses is it right for?

Mobile app development adds the most value for businesses that build a frequent, repeat relationship with their customers. Restaurants and stores that want an ordering and loyalty app, clinics and studios that work by appointment, and education and fitness businesses that offer content to their members are typical examples of this group. For companies with field teams, internal-use apps can replace paper forms and messaging groups.

Choosing the technical approach for an iOS and Android app

In an app that will be published on two platforms, the first technical decision is how the code will be written. This choice directly affects the mobile app development budget, the speed of later updates and how deeply the app can reach device features. The right answer varies by project; we weigh the options below together with you.

Native development

In the native approach, two separate apps are written: in Swift for iOS and in Kotlin for Android. You reach all of the platform’s capabilities directly; it is a strong option for apps with heavy animation, advanced camera processing, hardware connections such as Bluetooth or high performance needs. In return, the two separate codebases have to be maintained separately.

Cross-platform development

With frameworks such as Flutter or React Native, both the iOS and Android versions are produced from a single codebase. Most apps, such as catalog and ordering, reservations, membership and task tracking, can be built comfortably with this approach. A single codebase makes it easier for a new feature to reach both platforms at once and reduces the maintenance load.

What decides it?

When choosing the approach in an iOS and Android app project, we look at these questions:

  • Which device features will the app use: camera, location, Bluetooth, health data, background operation?
  • How much animation is in the interface and what are the performance expectations?
  • How often will updates be made after launch and what is the maintenance budget?
  • Is there a chance that you or another team will take the app over later?
  • In what way will the app exchange data with your existing systems?

Performance and accessibility

Whichever approach is chosen, the app needs to run smoothly on mid-range and older devices too. During mobile app development, we separately test launch time, image sizes and how screens behave on a weak connection. Screens that do not break when the text size is increased, enough color contrast and buttons that work with screen readers are part of the plan from the start.

Our mobile app development process

In mobile app development projects, the most expensive mistakes are scope uncertainties noticed after coding has started. That is why we break the process into small, controllable steps and get your approval at the end of each one.

  1. Discovery meeting: we talk about your business goal, your users and the real problem the app needs to solve.
  2. Scope document: we put the first version’s feature list, user roles and integrations in writing.
  3. Flows and prototype: we draw the transitions between screens and try them with a clickable prototype.
  4. Interface design: we adapt a visual language that fits your brand to the habits of the two platforms.
  5. Development cycles: we break the work into short cycles and share a test version with you at the end of each cycle.
  6. Testing: we test on different screen sizes, operating system versions and connection conditions.
  7. Store release: we prepare the store pages, submit the app for review and handle the feedback that comes back.

What does the scope document include?

The scope document is the shared reference both sides turn to throughout mobile app development. It contains user roles, what each role can do, the screen list, the systems to connect, notification scenarios and the features left out of the first version. When a new idea comes up, we look at this document and decide together whether it belongs to the first version or a later one.

Why does the prototype matter?

A clickable prototype lets you hold the app in your hands before a single line of code is written. When your teammates and a few real users try the prototype, a confusing menu or an unnecessary step is noticed early. A change made at the prototype stage takes far less effort than the same change made after mobile app development has moved on.

Design that fits platform differences

iPhone and Android users have different habits: the back gesture, the position of menus, the date picker or the share sheet work differently on the two platforms. In an iOS and Android app design, we keep the brand language common and leave these kinds of behaviors to each platform’s own pattern. That way the user does not feel like a stranger when they first open the app.

Keeping the first version small

A good first version is not one that does everything but one that does a single job very well. We recommend splitting the scope into “first version” and “later versions”. That way the app reaches users sooner, and later features are shaped by real usage data rather than guesses.

First launch and permission requests

The few screens a user sees when they first open the app largely decide whether they keep using it. Instead of asking for notification, location or camera permission in the first second, we prefer to ask when the user reaches the related feature and understands why the permission is needed. For an iOS and Android app, this small choice directly affects the chance of the permission being granted and the user’s trust.

Sharing test versions with you

During development, we share test versions through TestFlight on iOS and Google Play’s testing tracks on Android. You and your team install the app on your own phones, try it in real conditions and send your notes. These notes go into the priority list of the next development cycle.

Backend, admin panel and integrations

The screens the user sees are the visible part of the work. Most apps need a backend that manages user accounts, orders, content and notifications. When planning mobile app development, this layer needs to be designed from the start as well; otherwise changing the data structure becomes hard after the app is live.

  • User management: sign-up, login, password reset and account deletion flows.
  • Admin panel: a web panel where your team can update content, products, orders or appointments without touching the app.
  • Notifications: push notifications sent through Apple Push Notification service on iOS and Firebase Cloud Messaging on Android.
  • Analytics: measurement that shows which screens are used and at which step users leave.
  • Bug tracking: reporting that tells you, when the app crashes, on which device and at which step it happened.

Your app often does not work alone; it needs to exchange data with your e-commerce platform, your ERP or accounting software, your CRM or your payment provider. We plan these connections on the API and system integrations side. Whether your existing systems offer an API is one of the first questions that determine the scope of mobile app development.

Security is part of this layer too. We make sure the traffic between the app and the server is encrypted, that session information is stored in secure areas on the device and that the app asks only for the permissions it really needs. In the admin panel, we set up role-based authorization so that each team member sees only the sections related to their own work.

The store release process and what comes after

An app being ready does not mean it is live on the store. Apple and Google review every app and every update under their own rules. In an iOS and Android app project, instead of leaving store preparations to the end of development, we include them in the plan from the start.

Developer accounts

For the app to be published in your name, you need an Apple Developer Program membership and a Google Play developer account. On Apple the membership has an annual fee; on Google Play a one-time fee is charged at registration. For accounts opened in an organization’s name, Apple asks for a D-U-N-S number, and Google also verifies identity and business details for organization accounts. We recommend that the accounts be opened in your company’s name and that ownership stays with you.

Review rules

Apple’s App Store Review Guidelines list the conditions an app must meet under the headings of safety, performance, business model, design and legal compliance. On the Google side, releases, test tracks and policy notices are managed through Google Play Console. Common reasons for rejection include missing content, broken links, not giving the review team a demo account and incomplete privacy information.

Privacy, KVKK and user permissions

Both stores ask for a privacy policy link and a declaration of what data the app collects: privacy labels on the App Store and the data safety section on Google Play. If an account can be created in the app, it is also expected that the account can be deleted from within the app. For users in Turkey, the disclosure text under KVKK (Turkish Personal Data Protection Law No. 6698) and, if needed, explicit consent steps must also be prepared; we recommend finalizing these texts with your legal counsel.

In-app payments

If digital content or subscriptions will be sold in the app, Apple and Google generally require their own payment systems to be used. For sales of physical products and services delivered in person, you can use your own payment infrastructure. Because this distinction affects your revenue model, we settle it at the scope stage.

Store page and visibility

The store page is the app’s shop window. The app name, short description, screenshots, promotional text and keywords affect both whether you are found in in-store searches and whether a visitor to the page downloads the app. We prepare the screenshots not as mere copies of the screen but as a story that explains in a few frames what the app is for.

Maintenance after launch

Mobile app development does not end with release. Apple and Google regularly release new operating system versions; Google Play requires apps to target a current Android API level within a certain period. Library updates, security patches and user feedback need constant attention. We can take on this work under maintenance and technical support.

We also release updates in a controlled way. The phased release option on the App Store and the staged rollout option on Google Play let a new version reach only part of the users first. If an unexpected rise appears in crash reports, stopping the rollout and fixing the problem is much easier than dealing with a bug that affects all users.

What determines the scope in mobile app development

It is not possible to describe a mobile app development budget with a single figure; two apps with the same name can have very different scopes. We share the price and timeline in writing once the scope document is settled. These factors determine the scope the most:

  • Number of screens and user roles (customer, courier, admin and so on).
  • Special modules such as payment, maps, camera, chat and calendar.
  • The number of systems to connect and whether those systems offer a ready API.
  • Offline operation, multiple languages and accessibility requirements.
  • The scope of the admin panel and the reporting need.
  • Expectations for maintenance and new feature development after launch.

What to prepare

If you come to the mobile app development meeting with the following, we can pin down the scope much faster:

  • A summary of one or two paragraphs describing the problem the app needs to solve.
  • Example apps you like and dislike, with your reasons.
  • Your logo, color palette and, if you have them, corporate identity files.
  • A list of the systems to connect and the contact details of their technical owners.
  • The company details that will be used to open the Apple and Google developer accounts.
  • The texts, product data and images that will appear in the app.

What to look at when comparing quotes

Mobile app development quotes may look similar at first glance, but their contents can be very different. When you put quotes side by side, look for answers to these questions:

  • Are interface design and a prototype included in the quote?
  • Are the backend and admin panel priced separately?
  • Who is responsible for preparing the store pages and the review process?
  • Is the source code handed over, and who keeps ownership?
  • Are bug fixing and maintenance terms after launch in writing?

Common mistakes

  • Fitting everything into the first version: release is delayed and user feedback comes late.
  • Moving the website to the app as it is: users on a phone behave differently; flows need to be designed for mobile use.
  • Having store accounts opened in someone else’s name: ownership of the app and the accounts should be yours.
  • Leaving maintenance out of the budget: an app that is not updated starts having problems on new devices over time.
  • Releasing without analytics: without knowing which feature is used, the next version cannot be planned.

How do we measure success?

The number of downloads alone can be misleading; what matters is whether the person who downloaded the app comes back. After release, we track the number of active users, the step at which users leave, crash reports and store reviews together. For an iOS and Android app, this data is the most solid basis for deciding what to improve in the next version.

Frequently asked questions

How long does mobile app development take?

The time varies with the number of screens, the integrations and the store review process. Once the scope document is settled, we work out a step-by-step schedule and send it to you in writing.

Can a single iOS and Android app be published on both stores?

Yes. With a cross-platform framework, versions for both the App Store and Google Play can be produced from a single codebase. If the app needs device features heavily, we also consider native development.

Who owns the app’s source code and the store accounts?

We recommend that the store accounts be opened in your company’s name. We state the terms on ownership of the source code and accounts clearly in the contract at the start of the project.

Can the app use the same data as my existing website?

It can. If your website’s infrastructure offers an API, the app uses the same product, member and order data; if it does not, we set up this connection layer first.

What happens if the app is rejected by the store?

Apple and Google state the reason when they reject. Based on the reason, we make the fix, add an explanation if needed and submit the app for review again.

Who makes the updates after mobile app development?

We can continue maintenance and development support, or we can hand over the code and documentation to your own team. We decide together at the start of the project which path suits you.

Let’s pin down your app idea together

Whether you have only an idea or a detailed scope, the first step is a short call. We talk about who the app is for and which problem it will solve, and we explain clearly the mobile app development approach that suits you and the next steps. You can reach us through our contact page.

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