--- title: "App Design for iOS & Android — Blackbook" description: "From idea to App Store. Blackbook designs customer-facing apps for iOS, Android and web – AI-driven features and flows for daily use. Let's talk about yours." canonical_url: https://www.blackbook.dk/en/services/apps/ md_url: https://www.blackbook.dk/en/services/apps/index.md language: en last_updated: 2026-09-07 --- # App Design for iOS & Android — Blackbook From idea to App Store. Blackbook designs customer-facing apps for iOS, Android and web – AI-driven features and flows for daily use. Let's talk about yours. > Alternate (Danish): https://www.blackbook.dk/services/apps/index.md > Provider: Blackbook — founded by Jeppe Sloth Carlsen (https://www.blackbook.dk/en/about/) > Provider ID: https://www.blackbook.dk/#organization > Founder ID: https://www.blackbook.dk/#person-jeppe > Topics: App design, Mobile app design, App UX, iOS and Android design > Part of: Blackbook — digital design agency, Copenhagen (https://www.blackbook.dk/en/) > LLM reference: https://www.blackbook.dk/llms.txt > Full reference: https://www.blackbook.dk/llms-full.txt > Markdown sitemap: https://www.blackbook.dk/sitemap.md > Preferred citation URL: https://www.blackbook.dk/en/services/apps/ ## Services — Apps Apps people come back to Blackbook designs apps that solve one problem well. We work with iOS, Android and cross-platform – from the first sketch to the finished design, ready for development. No feature bloat, no unnecessary complexity. AI is part of our app design – from intelligent onboarding flows that adapt to the user to AI-driven features that make the product smarter over time. ## Less is harder – and better ### App design and product design for iOS, Android and cross-platform A good app feels like it has always existed. It does not need a manual, it explains itself. That is the result of hundreds of decisions about what to include – and more importantly, what not to. We design apps that do one thing brilliantly rather than ten things halfway. We work in layers: user flows and wireframes first, UI design and prototypes next, design system and specifications last. Each layer builds on the previous – and is tested before we move on. ## Ready for development, not just for a pitch We do not deliver mockups that look great in a pitch but fall apart in code. Our designs are built with an understanding of platform conventions, technical constraints and the interaction patterns users already know. Developer handoff with specs, assets and a design system that holds. **What we deliver:** Concept development · User flows · Wireframes · UI design · Prototypes · Design systems · iOS & Android specs · Cross-platform design · Developer handoff ## For products people use every day We do our best work with fintech, health, SaaS and eCommerce – products where the app is not a supplement to the website but the product itself, and where the user experience decides whether people stay or switch. If you have an app to design or improve, [let's talk about your project](https://www.blackbook.dk/en/contact/). ## Selected cases Digital tools that make a difference for the business and the people using them. An approach to product design honed on projects for banks, pharma, and healthcare, where complexity has to feel simple. ### Digital identity and tagline — Lyngby Storcenter - Redesigned Lyngby Storcenter's digital identity, reskinned the website, and created the centre's new tagline "Vi gør os umage". [Lyngby Storcenter — Digital Identity](https://www.blackbook.dk/en/portfolio/lyngbystorcenter/) ### Pharma App for iOS and Android — Ferring Picoprep - Designed a native iOS and Android app for Ferring – treatment guide with nutrition info, medication schedule and push notifications for colonoscopy prep. [FERRING — Pharma app](https://www.blackbook.dk/en/portfolio/ferring/) ### Attention Value & Sponsorship Platform — Valiyou - Lead Product Design for Valiyou – a SaaS platform turning attention value into measurable sponsorships for sports clubs, influencers and events. [Valiyou.com — Attention Value & Sponsorship Platform](https://www.blackbook.dk/en/portfolio/valiyou/) ### SaaS product design for sponsorship platform — Valiyou.io - Lead Product Design for Valiyou.io – a data-driven SaaS platform turning attention value into measurable KPIs for sponsorships, sports clubs and events. [Valiyou.io — Increase the value of your sponsorships](https://www.blackbook.dk/en/portfolio/valiyou-io/) ### eDetailer and risk calculator — Bayer Xarelto - Designed iPad-based eDetailers and personalised portals with risk calculators for iOS and Android for Bayer's blockbuster product Xarelto. [Xarelto — Global web portal](https://www.blackbook.dk/en/portfolio/bayer-healthcare/) ### CLM Platform UX Redesign — Agnitio iPlanner - Redesigned Agnitio's CLM platform with calendar, Near Me lookup, dashboard and iTunes-inspired coverflow for eDetailers. [Agnitio - iPlanner — Closed loop marketing](https://www.blackbook.dk/en/portfolio/iplanner/) ### Analytics tool for pharma — Agnitio iStats - Designed the user interface and icon font for Agnitio's analytics software, helping pharma teams track eDetailer performance, sales and representatives. [Agnitio - iStats — Closed loop marketing](https://www.blackbook.dk/en/portfolio/agnitio-istats/) ## Related services ### UX Agency & Product Design Copenhagen — Blackbook - From user research and UX to a finished design system. Blackbook runs product design end to end – research, flows, UI and testing. [UX & Product Design](https://www.blackbook.dk/en/services/ux-product-design/) ### Design Systems for Digital Products — Blackbook - From components and tokens to documentation. Blackbook builds design systems that keep products consistent at scale. [Design Systems](https://www.blackbook.dk/en/services/design-systems/) ### AI Design & Intelligent Products — Blackbook - From conversational interfaces to AI-driven workflows. Blackbook designs and builds AI products that solve real problems. [AI Experiences](https://www.blackbook.dk/en/services/ai/) ### Machine Learning Design Copenhagen — Blackbook - From pattern recognition to personalisation. Blackbook designs user experiences that leverage machine learning to get smarter over time. [Machine learning](https://www.blackbook.dk/en/services/machine-learning/) ### Software & SaaS Design Agency Copenhagen — Blackbook - From complex interfaces to intuitive workflows. Blackbook designs software that makes advanced functionality accessible. [Software & SaaS Design](https://www.blackbook.dk/en/services/software/) ### Gamification Design Copenhagen — Blackbook - From point systems to engagement loops. Blackbook designs gamification that motivates, engages and retains users. [Gamification](https://www.blackbook.dk/en/services/gamification/) ### Data Visualization Design — Blackbook - From dashboards to real-time data. Blackbook designs data visualization where numbers become decisions. [Data Visualization](https://www.blackbook.dk/en/services/data-visualization/) ### Service Design Agency Copenhagen — Blackbook - From customer journey to service blueprint. Blackbook designs services that hold together across touchpoints, systems and channels. [Service Design](https://www.blackbook.dk/en/services/service-design/) ### FinTech Design Copenhagen — Blackbook - From payment platforms to compliance flows. Blackbook designs fintech products where trust and regulation are built into the design. [FinTech](https://www.blackbook.dk/en/services/fintech/) ## About Blackbook Blackbook is a Copenhagen digital agency blending creativity and technology across UX, branding, websites and eCommerce. Areas of expertise: - [Apps & Products](https://www.blackbook.dk/en/area/apps-products/index.md) - [Brand & Campaigns](https://www.blackbook.dk/en/area/brand-campaigns/index.md) - [Websites & eCommerce](https://www.blackbook.dk/en/area/websites-ecommerce/index.md) Key figures: - 250+ Digital projects - 150+ Clients - 15+ Fortune 500 - 5+ Top 100 Brands - 25+ Years experience ## Site [Home](https://www.blackbook.dk/en/index.md) [Portfolio](https://www.blackbook.dk/en/portfolio/index.md) [About](https://www.blackbook.dk/en/about/index.md) [Services](https://www.blackbook.dk/en/services/index.md) [Experience](https://www.blackbook.dk/en/experience/index.md) [Recognition](https://www.blackbook.dk/en/awards/index.md) [Contact](https://www.blackbook.dk/en/contact/index.md) [CV](https://www.blackbook.dk/en/cv/index.md) [Journal](https://www.blackbook.dk/en/journal/index.md) Blackbook · Jerichausgade 7 · 1777 Copenhagen · (+45) 31 10 79 13 · [jeppe@blackbook.dk](mailto:jeppe@blackbook.dk)