Service · App development

Custom B2C app development for consumers at scale.

A consumer app where every screen flow is optimised for acquisition, conversion and retention. Social login, push engagement, in-app purchases, ASO and analytics — delivered as one cohesive product, not as loose building blocks.

React Native & FlutterApp Store & Play StorePush & analyticsWCAG/EAA-ready

A B2C app is a different product from a B2B app.

With a B2B app, the end user is a professional who wants to get their work done, so efficiency, integrations and role management come first. With a B2C app, the end user is a consumer who wants to feel something, buy something or get something sorted. The rules of the game revolve around acquisition, conversion, retention and scale, and all three stages have to work at product level, not just on the marketing plan.

That means: an installation flow that works in half a minute, onboarding that delivers the "aha" moment within three screens, push notifications that don't annoy, an in-app purchase that complies with Apple's and Google's rules, and a design that is WCAG/EAA compliant. We build B2C apps this way: as a consumer product, not as an extension of a backend.

The biggest pitfall in custom B2C app projects is that functional scope dominates, while the real challenge lies in the details of the end-user experience. A button one tap closer, a loading screen that disappears half a second faster, a notification that arrives at exactly the right moment: these are the levers that make the difference between an app that stays installed and one that disappears within a week. Our approach focuses the first sprints on that core experience, and only then on breadth.

Three types of consumer app.

The choice depends on who your audience is, how you plan to monetise, and how much operational complexity surrounds it. We'll discuss which approach fits during the introductory call.

Compact project · fixed sprint budget

Direct-to-consumer or community app

A focused app for one clear job-to-be-done. Think of a D2C brand opening its own channel alongside the webshop, a loyalty app for a physical retail chain, or a community app built around a newsletter or festival. Social login via Apple, Google and Facebook, push engagement at the right moments, and a light in-app store or referral mechanism where it fits. Built cross-platform so one codebase serves iOS and Android.

Social loginPush engagementLoyalty / badgesReferral flow
Mid-sized project · fixed sprint budget

Subscription or marketplace app

An app with a recurring revenue stream or a two-sided market. Subscription flow via App Store IAP, Play Billing or your own payment solution (Stripe, Mollie), depending on the type of offering and what the store policies allow. Behaviour-based personalisation via a recommendation engine, A/B testing in onboarding and paywall, and integrations with CRM (HubSpot, Salesforce) and marketing automation (Klaviyo, Braze) for retention campaigns.

Subscription flowIn-app purchasesPersonalisationCRM integration
Larger project · fixed sprint budget

Customer app for a large consumer brand

Mission-critical app for an insurer, energy supplier, bank, telecom provider or healthcare provider. Deep integrations with policy systems, smart meter data, payment providers or EHR portals, plus PSD2 flows and iDIN identification where the sector requires it. Scales to hundreds of thousands of users, with multi-language support and region-specific flows. In-app support via chat (Intercom, Zendesk) and an ongoing release cycle that keeps pace with OS updates and store policies.

PSD2 / iDINMulti-languageSelf-service portalIn-app support

What you get at the end.

A working B2C app in both stores, plus everything around it needed to run the growth itself.

  • The app in both storesProduction builds in the App Store and Google Play, plus a staging build for your QA team. Cross-platform via React Native or Flutter, or native iOS and Android where performance demands it.
  • Cloud-native backendAPIs, identity, push infrastructure, payment integration and analytics on AWS, GCP or Azure. CDN for assets and media, autoscaling for peak loads.
  • Analytics and engagement stackMixpanel, Amplitude or Firebase Analytics set up. Push via OneSignal, Braze or Firebase Cloud Messaging. A/B testing infrastructure via Firebase Remote Config or Optimizely.
  • App Store optimisation (ASO)Store listings in both languages, screenshots, preview video, keyword research and an in-app rating flow. Includes a playbook for actively responding to reviews.
  • Compliance fileGDPR processing register, ePrivacy consent, App Store and Play Store policy check, WCAG/EAA testing and, where applicable, AVG-K, DSA and AI Act assessment.
  • Maintenance contract (optional)OS updates, app store policy monitoring, security patches and data-driven further development. Fixed monthly fee, with response times depending on the tier.

The organisations we build B2C apps for.

The B2C app appears in almost every consumer market. Here is a selection of where we often sit at the table. If you don't quite recognise your sector in these categories, we're still happy to talk.

Retail & D2C

Brands seeking direct contact

D2C brands in fashion, lifestyle and food that want to reach their customers through more than just a webshop, via their own channel with push notifications, loyalty and a second purchase moment. For retail chains with physical stores, this is often a loyalty card replacement with scan-and-go, stock visibility per branch and targeted offers based on purchase history. Often with a retail app or a headless commerce platform as the underlying system.

Media & publishing

Content apps with a paywall

Newspapers, magazines, podcast platforms or newsletter publishers that want a consumer app alongside their web offering. Subscription flow with App Store in-app purchase or a proprietary payment route, offline reading mode, push notifications for breaking news and an editorial CMS at the back end. For publishers working with paywalls, we pay particular attention to balancing an accessible free tier with a conversion flow that doesn't feel like a barrier.

Finance & insurance

Banking, investing, policies

Banks, investment platforms, insurers and health insurers that want a secure customer app where users manage their own affairs. PSD2 flows, iDIN identification, reporting claims, viewing policies and tracking payouts, integrated with core administration, claims systems or a payment platform. Beyond functionality, trust matters here too: visual design, transparency about data, and support that feels human.

Utilities & telecom

Customer self-service

Energy suppliers with smart meter data and consumption insights, telecom providers managing data bundles and subscription changes, and water or heat companies collecting meter readings via the app. Self-service reduces call centre pressure and gives customers control over their usage and costs. Often combined with proactive push notifications when consumption peaks or a bill is above average, communication that prevents problems rather than explaining them afterwards.

Health & well-being

Telehealth and self-monitoring

Healthcare providers looking to offer telehealth consultations, patient portals linked to their EHR, mental health apps with journalling and check-in features, and fitness apps with training progression and wearable integrations. Strict privacy, NEN 7510 where applicable, and, for apps aimed at children or vulnerable groups, additional safeguards around consent and data minimisation.

Mobility & hospitality

On the move and on location

Mobility (car sharing, public transport, EV charging and multimodal travel), hotels with digital check-in and room keys, restaurants with delivery and loyalty, and festival and event apps with programmes, tickets, push notifications for changes and in-app refreshment ordering. Often involving location, offline mode, in-app payments and integrations with POS or property management systems.

Education & gaming

Learning, playing, staying engaged

E-learning platforms for secondary schools, tutoring apps for one-to-one teaching, knowledge quiz apps for professionals and light gaming or entertainment apps. Here everything revolves around session length and return visits: daily streaks, personalised recommendations, badges and notifications that land at the right moment without feeling intrusive.

Government & public sector

Civil registration and civic participation

Municipalities, provinces and public service organisations looking to offer digital services to citizens, from waste collection calendars and parking permits to DigiD-linked applications, public space reporting and participation platforms. High demands on accessibility (WCAG/EAA), multiple languages and clear logging for auditability.

Loyalty & community

Sport, fan and lifestyle

Sports clubs with a fan app, festival organisers with a year-round community app, lifestyle brands with a referral mechanism, and niche communities that want their own channel alongside the large social networks. The common thread: emotional connection, sharing and invitation flows, and push notifications that users experience as value rather than interruption.

Not yet sure about a large project?

Test your idea first: a working prototype in 1 day

With OneDayBuild, we turn your idea into something tangible in one day for €1,150, so you can see whether further development is worth the investment. Decide to go ahead with the full build? Then we credit the full cost.

Explore OneDayBuild →

How a B2C app project works.

1

Introduction and sharpening the proposition

A conversation in which we define the proposition and the "job to be done" for the end user. Which acquisition channels do you have, what does the funnel look like, what is the business model, and which set of metrics will tell you whether the app works. We also outline what a minimum viable core flow could be, which is often narrower than clients expect at the outset.

2

Discovery, UX and compliance review

A workshop with your team plus interviews with prospective users. From this we develop wireframes for onboarding, the core flow and monetisation. In parallel we check GDPR, ePrivacy, store policies, WCAG/EAA and, for children's apps, the AVG-K requirements. For apps with a recommendation engine we also assess the scope of the AI Act, and for large consumer platforms the DSA obligations around moderation and transparency.

3

Building in sprints with interim store builds

A working build every two weeks, available via TestFlight and Play Console internal testing. Your team tests along with us, and external testers too. We develop the first store listing and ASO setup together during this phase, so we don't discover at the end that a screenshot or a piece of text breaches a policy. We work with a short demo at the end of each sprint and a review: what already works, and what needs refining.

4

Soft launch, learning and further development

We roll out on a limited basis first, often in one region, with one user segment or through a staggered launch via the Play Console. We measure what works in Mixpanel or Amplitude and expand from there. Further development is driven by what the figures show rather than by what we assumed in advance. Push cadence, onboarding sequence and paywall placement are often fine-tuned at this stage before a broad launch.

5

Ongoing maintenance and growth roadmap

After going live, the focus shifts to OS updates, changes to store policies and data-driven development. We work with a quarterly roadmap based on retention figures, support tickets and commercial priorities. The difference between an app that survives its first year and one that grows year on year lies in this phase.

Frequently asked questions.

What clients usually want to know before starting a B2C app.

What is the difference between a B2C app and a B2B app?
The end user decides everything. With B2B that is a professional in a working context, where efficiency, integrations and role management carry the most weight. With B2C it is a consumer in their free time, so onboarding has to land within seconds, push notifications must not irritate, and you are subject to app store rules that do not apply to internal software. The choice of features differs too: social login hardly works in a business context, in-app purchases for B2C content are often mandatory through the stores, and personalisation is far more central. The codebase may look similar, but the design and the measurement framework differ fundamentally.
Cross-platform (React Native, Flutter) or native iOS and Android?
For the vast majority of B2C apps, cross-platform works well and is more cost-efficient: one codebase, shared features, and releases that run in step on iOS and Android. We choose native when the app depends on heavy AR/VR, 60fps gaming graphics, intensive use of Bluetooth/NFC, or when fintech security requires extra-strict platform APIs. Often a hybrid approach works best: a React Native or Flutter shell with native modules where they're truly needed. The right answer almost always becomes clear in an initial technical session where we walk through the most demanding features.
What about App Store and Play Store policies?
Apple and Google are strict, and their rules change regularly. At intake, we run a policy check on the well-known sensitive areas: sensitive content, child audiences, health claims, financial features, use of advertising, Sign in with Apple requirements, and which payment routes are permitted. Throughout the project, we keep an eye on policy updates and build the store listing early in a sprint so you don't run into a rejection at the last minute. If an app is rejected, we help with the appeal to Apple or Google and with the necessary changes.
In-app purchases through the stores or your own payment solution?
For digital content and subscriptions, you are generally required to use Apple In-App Purchase and Google Play Billing, with their commission of 15 to 30 per cent. For physical products, services delivered remotely (such as a ride, hotel room or delivery), or business subscriptions, you may run your own payment solution via Stripe, Mollie, Adyen or another payment platform. The boundary isn't always clear-cut and is a grey area in some cases. Together we decide which route suits you best, build it cleanly, and take into account any relevant Digital Markets Act exceptions.
What is ASO, and what do you do for it?
App Store Optimisation is the SEO of the stores: keywords, title, subtitle, screenshots, preview video and your rating curve determine which users see you and who converts to an install. We carry out keyword research for the right market, deliver an initial set of screenshots in both languages, and build an in-app rating flow that asks at the right moment, after a moment of success rather than on launch. After going live, we keep improving iteratively based on conversion data per keyword and variant. We handle the build, and your marketing team or agency can take it from there with campaign tooling.
How do you keep users engaged after the first install?
A mix that varies from app to app. Push engagement with personalised messages via Braze, OneSignal or Firebase Cloud Messaging, based on behaviour and time of day. Email and in-app campaigns through a CRM integration (HubSpot, Salesforce, Klaviyo). Referral and loyalty mechanisms that reward users for returning or inviting others. In-app support via chat (Intercom, Zendesk) so that a question doesn't lead to an uninstall. Not everything at once: we start with the two or three channels that look most likely to pay off for your audience, and expand as the data supports it.
Does GDPR for children apply if children use our app?
Yes, and it is no formality. For apps aimed at children under 16 (in the Netherlands), you need explicit parental consent, you may not run behavioural advertising without safeguards, you must demonstrably minimise data, and you must register the app at a different level in the stores (Apple's Kids Category, Google's Designed for Families). We help with the DPIA, the consent flow and the store classification. For apps not primarily aimed at children but with a share of younger users, lighter yet relevant requirements apply, and we check for those too.
What determines the cost of a custom B2C app?
Three main factors: the complexity of the core flow (a focused content app versus one with payments, identity, AR features and heavy integrations), the breadth of the launch portfolio (Netherlands only or several countries and languages, one target group or several segments) and the level of management after go-live (maintenance only or ongoing product development). Compliance aspects such as WCAG/EAA, GDPR or PSD2 also play a role in the first sprints. After the introductory call, we provide a substantiated indication for an initial tier, and only once the scope has been worked out, a fixed price per sprint so you know where you stand.
How quickly can we go live?
A first working build for a focused B2C app is typically available within a few sprints, on TestFlight and Play Console internal testing. This is followed by a soft launch and refinement phase before we launch broadly in both stores. For larger apps involving PSD2, EHR integrations or recommendation engines, it becomes a multi-sprint process, phased by audience or region. An exact timeline takes shape during the discovery phase, based on scope and the dependencies on your side.

Talk to us about your B2C app.

A thirty-minute introductory call, no obligation. Tell us where the user comes from, where they need to go and what the business model is. We will help you think through scope, stack and what should be first on the roadmap.

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