Belgium · Agentic mobile development

Mobile App Development for Belgium, on iOS and Android

In September 2026, StatCounter recorded Android at 57.07% of mobile operating system usage in Belgium and iOS at 42.92%. Neither platform can wait for a second release, so an app for Belgian users usually has to reach both stores, plan for Dutch, French and German, and follow the consent rules that the Data Protection Authority applies to tracking inside smartphone apps as well as on websites.

We are Curiosive, a studio working remotely from Ankara, Türkiye, where AI coding agents write much of the code and senior engineers review every line. One React Native codebase in TypeScript reaches the App Store and Google Play. Agents draft screens, navigation, form validation and tests. Engineers keep token storage, auth refresh, permission prompts and the privacy declarations that store review reads.

Start a partnership From $2,000 per month

24: published portfolio projects
5+: years building for production
12: countries the work runs in
100%: of code read by a senior engineer
1 day: to hear back, from the engineer

Localising a mobile app for Belgium's three official languages

Belgium's official EU languages are Dutch, French and German. Even if an app launches in only one or two of them, it should be built so that adding the next is a translation job rather than a refactor. We set up the translation layer before the first screen, keep user-facing strings out of the components and let agents generate the screens, tests and per-language store metadata around it, with a person checking the copy before submission. Identity is the other local decision. itsme, the Belgian digital identity app, announced on 17 March 2026 that it had passed 8 million users in Belgium, and it has been recognised at European level since December 2019 with eIDAS level of assurance high. If your users must prove who they are or sign documents, decide early whether itsme belongs in the sign-in flow, because that choice shapes the auth design.

Belgium governs cookie and tracker consent through Article 10/2 of the Act of 30 July 2018, and the Data Protection Authority's cookie checklist explicitly applies it to tracking in smartphone apps, pixels, device fingerprinting and local storage. The checklist expects nothing that is not strictly necessary to be set before valid consent, a button to refuse all non-essential cookies at the same level as accepting all, no pre-ticked boxes, a choice for each purpose and withdrawal as easy as giving consent. It considers six months a reasonable lifetime, in principle, for the cookie that stores those choices. We gate every SDK that is not strictly necessary behind the stored consent state, so declining means it never initialises. An engineer then checks that the Google Play Data safety form, which must cover data collected through third-party SDKs, matches the code, and that the Apple privacy manifest gives an approved reason for each required-reason API in use.

GDPR Article 8 sets 16 as the default age from which a child can consent to an information society service offered directly to children, and lets Member States go as low as 13. Belgium chose 13, in Article 7 of the Act of 30 July 2018. For younger children, consent must come from the child's legal representative, and the controller must make reasonable efforts to verify it. In an app aimed at children, that means an age question, a parental consent path and no data collected until consent exists. Apple's updated age rating system adds 13+, 16+ and 18+ ratings plus required questions on in-app controls and capabilities, so store answers and the in-app flow should agree. For apps with account creation, Apple requires a way to start deletion inside the app, and Google Play requires both an in-app path and a web link.

Bancontact, Apple's EU terms and payments in Belgian apps

Bancontact reports nearly 18 million cards in circulation and more than 2.5 billion transactions a year. Under the rebrand it announced on 6 November 2025 for spring 2026, its online payments appear as Bancontact Pay, Bancontact Card and Bancontact One Click. Bancontact Pay runs through a banking app or the Bancontact Pay app, which replaces the Payconiq by Bancontact app, so a checkout that hands off to another app and back needs careful return handling on both platforms. For digital goods, Apple says its EU terms, effective 1 October 2026, let iOS apps in the EU offer alternative payment processing alongside In-App Purchase, at a 20% commission, or 10% for program participants and for subscriptions after their first year. Whichever route you choose, an engineer owns the server-side check that decides what a user is entitled to.

Agentic mobile app development: what agents build, what engineers own

Agents take the repetitive half of a mobile codebase: screens, navigation, list rendering, form validation and unit tests, each change already passing the type checker, linter and test suite before anyone looks at it. The parts that can hurt users stay with engineers: token storage in the iOS Keychain and Android Keystore, auth refresh, offline and reconnection behaviour, permission prompts and the server-side entitlement check. No agent change merges until a senior engineer has read it. New apps and app updates on Google Play have had to target Android 16 (API level 36) since 31 August 2026. TrendinChat (trendin.chat), real-time chat rooms in React Native, was built in two weeks. With Ankara one or two hours ahead of Belgium depending on the season, most of a working day is shared.

Proof

Published project examples

TrendinChat

Coffict

This is HCD

MoneyCare

Appster

Release Coach AI

AI-accelerated development

from$2,000

per month

Senior engineers building your product with AI coding agents: web, mobile, SaaS or browser extension, reviewed before anything ships.

Web, mobile, SaaS and browser extensions
AI-assisted delivery under senior engineer review
Scope and capacity agreed in writing, renews monthly

AI-accelerated development, billed monthly. We confirm scope, capacity and start date in writing before checkout.

Questions

The things people ask before starting.

Which languages should a mobile app for Belgium support?

Plan for all three of Belgium's official EU languages: Dutch, French and German. Launching with fewer is reasonable if that matches where your users are, as long as every string lives in a translation layer, so the next language arrives as copy rather than code.

Do Belgian cookie consent rules apply to mobile apps?

Yes. The Data Protection Authority's cookie checklist explicitly applies Article 10/2 of the Act of 30 July 2018 to tracking in smartphone apps. Analytics and attribution SDKs that are not strictly necessary should wait for valid consent, and refusing them must be offered at the same level as accepting.

What is the age of digital consent for apps in Belgium?

It is 13. Article 7 of the Act of 30 July 2018 sets the age of digital consent for information society services offered directly to a child at 13, below the GDPR default of 16. For children under 13, consent must be given by the child's legal representative, so an app aimed at them needs a parental consent path.

Should a Belgian startup build its app for Android or iOS first?

Build for both at once. StatCounter put Android at 57.07% and iOS at 42.92% of mobile operating system usage in Belgium in September 2026, too close to drop either. Work runs as AI-accelerated development, starting from $2,000 per month, with scope agreed in writing.

Solutions

Locations

What happens after you write to us.

01
You describe the product
One paragraph on what you are building, roughly when you need it, and who it is for. No brief, no form with fifteen fields.
02
You get a reply within a day
From the engineer who would do the work, not a sales team. If we are not the right fit we say so, and where possible we point you somewhere better.
03
You get a scoped plan
Scope, price and timeline in writing before anything is committed. You decide with the numbers in front of you.

No long contract to begin, no lock-in to our tooling, and the code is yours from the first commit.

Start a conversation

Contact

Looking for an engineering partner for the long haul?

A short note about the product, the timeline and who it is for is enough to start. You will hear back from the engineer who would do the work, not a sales team.

hello@curiosive.com See what we have shipped

Ankara / Türkiye · Working across European and US time zones

Mobile App Development for Belgium, on iOS and Android

Localising a mobile app for Belgium's three official languages

Bancontact, Apple's EU terms and payments in Belgian apps

Agentic mobile app development: what agents build, what engineers own