Solutions / Engineering / Mobile App Development

We engineer apps for retention.

Most apps launch successfully but lose users by day 30. We build for the months that follow.

Our mobile development approach

We test the devices your customers use every day.

We develop apps for use beyond launch. A completed build, store listing and first week of downloads measure launch results; later use often gets less attention. Industry benchmarks put typical day 30 retention in the low single digits. Roughly a quarter of downloaded apps are opened once and never again. A successful launch can leave you with an unused app and no visibility into its decline.

We believe this problem starts before design. Most app projects define features, a delivery date and the handover. They leave out what users need to complete in their first session to return in week four. Without that definition, the team neither measures nor builds for the behavior. You get a finished app without the tracking that would show you when users are starting to leave.

Your app's retention depends on engineering choices, not a growth campaign after development. We define the activation event and the speed of the first screen on an Android that is four years old. We also specify how analytics will separate user cohorts. Those decisions precede the first commit. We add the tracking during development and review it after launch, while the team can still change the code readily.

Mobile app retention

Product and engineering choices that support continued app use.

Five stages of app retention

Day 0

The first sixty seconds

Installing the app is straightforward. The first session succeeds when users do something useful before registration blocks them, permission prompts interrupt them or the onboarding carousel takes more patience than they have.

Day 1

Give users reasons to return

Industry benchmarks put retention on iOS after the first day at around a quarter of installs. Almost all users returning tomorrow completed something today. A good first impression alone rarely brings them back.

Day 7

Build regular use

At the end of week one, users have either made the app part of their routine or only tried it for its novelty. Push notifications cannot create regular use without a reason in the product.

Day 30

Review user retention

Reported median retention after thirty days is near four percent across categories. At this stage, your cohort data should explain why users leave. Most teams find that their data cannot provide that explanation.

Year 2

Second year maintenance

After two OS cycles, store policies have changed and half the dependencies are outdated. Architecture chosen in month one determines whether the app lasts through this year; adding features does not.

The evidence

Figures carry their source and year.

Mobile app retention benchmarks

5.3%

Industry benchmarks: iOS retention near five percent at day 30, down from about a quarter on day one.

UXCam mobile app retention benchmarks, 2026 (industry-reported)

25%

A quarter of downloaded apps receive just one visit and are never reopened.

Business of Apps figures cited on LinkedIn, 2025 (industry-reported)

$171,450

Reported average custom mobile app development cost, from a compilation of more than 5,000 projects.

Topflight app development cost compilation, 2025-2026 (industry-reported)

The practice

We manage each service through its specialist practice.

Our nine mobile development services

Discovery and scope

We agree what your app needs to prove before our team starts writing code.

Native iOS and Android

We use Swift and Kotlin when performance, hardware access or platform behavior determines value.

Multiplatform engineering

We choose React Native and Flutter when shared code offers more than native development.

Interfaces prioritizing activation

We assess interfaces by initial session completion, rather than appearance in screenshots.

Backend and API architecture

We size your backend for actual growth, rather than projections in a sales deck.

Store submission and policy

We manage App Store and Play submissions, review compliance and resubmissions after policy changes.

Retention tracking

We include activation events, cohort definitions and churn triggers when we plan your build.

QA and device coverage

We test across OS versions on real hardware, including phones your users actually own.

Postlaunch improvements

After launch, we use live usage data to guide releases and keep the project active.

Working with our team

We develop apps for continued use after launch.

Working together

Planning your mobile app project

“Agencies deliver apps and disappear after launch.”

This happens often, so we address it in the contract. Before development starts, we agree a period for measuring usage after launch, specify the metrics and schedule reviews. You have a defined commitment that continues after your store listing goes live. An indefinite support retainer only sets out a billing arrangement. Without these obligations, it gives you no accountability for what happens after launch.

“We expect the pitching team but may get whichever junior developers are available.”

You should know your actual team before signing. Our proposal names each engineer, states their seniority and specifies their share of the work. We discuss any change with you before substituting someone. That detail lets you assess who will build your app. A firm unwilling to name people in its proposal has already shown you how it handles staffing.

“Native is expensive; apps sharing code may feel cheap.”

Both problems can occur. We assess how much your app depends on hardware and animation, how long you will maintain it and how easily you can replace the required skills in three years. You get a table showing the disadvantages of each option. We then recommend an approach and explain why it suits your product, rather than applying a fixed preference.

“We may lack full ownership of our code and infrastructure.”

Your agreement confirms ownership before development begins. The repositories, IP assignment, cloud accounts and store developer accounts belong to you. You avoid negotiating those terms at handover, when your negotiating position has weakened. We disclose every open source component and its license. Clear terms make ownership straightforward; wording that leaves ownership unclear is usually a deliberate choice by the supplier.

“Our app could launch successfully and still lose its users by day 30.”

That is the typical outcome, so we plan for early detection. Your build plan specifies the activation event and defines user cohorts and churn triggers. By week two after launch, the resulting data either explains why users leave or identifies the specific screen involved. Tracking cannot guarantee that users stay. It does give you evidence to work from instead of making guesses about the cause.

Questions

Questions about mobile app development

How much should we realistically budget to build an app like ours?

Costs vary widely, so a quote before scoping is a guess. Industry compilations report an average near $171,000 for a custom app and hourly rates of roughly $24 to $250, depending on team location. Your cost depends on the number of platforms, the availability of an existing backend and the amount of regulated data involved. We scope those three factors before pricing the work for you.

Who chooses native, multiplatform or hybrid development?

You choose after reviewing the tradeoffs. Native development (Swift, Kotlin) provides better performance and hardware access, with the platform behavior users recognize. Multiplatform development (React Native, Flutter) offers shared code and smaller teams, getting you to two stores faster. Your maintenance horizon and the ease of finding replacement skills also matter. We put both options in a comparison table, explain our recommendation and leave you room to challenge it.

How long will development take from the project kickoff to App Store approval?

Scope determines development time. Store approval adds a separate risk that teams routinely underestimate. Industry compilations report rejection for roughly a fifth of App Store submissions, with a higher rate for initial submissions. We schedule review as a work item and use a checklist covering privacy labels, account deletion and payment rules. It needs that time because repeated rejection and resubmission can take longer than developing the feature responsible for the rejection.

How do you handle Apple or Google policy changes during development?

On a sufficiently long build, policies will change. We plan for that and track platform policies throughout development. Code for permissions, data disclosure, purchases within the app and background behavior stays isolated, so a changed rule affects a small part of the codebase. We flag any effect on your schedule in the week we learn about it, giving you notice well before the week of submission.

How do you manage support after launch, including bugs and OS updates?

A major OS release can break code even when you have changed nothing. We therefore define support after launch as part of the scope. A set measurement period covers crash and ANR thresholds and cohort retention reviews. We test beta OS builds before public release. You agree bug severity levels and response times with us in writing at the start, avoiding disputes about urgent fixes while users are leaving.

Will you help us change direction if the first version fails to gain users?

Yes. Usage tracking gives you evidence for changing direction. When retention stays flat, cohort data usually identifies the problem: an onboarding step, an unreached feature or a user segment behaving differently. That helps distinguish a problem with the product idea from an audience mismatch or those twelve seconds after initial launch. Rebuilding on a hunch is expensive. A cohort chart gives you a basis for deciding what to rebuild.