What Openium does

Openium is a French mobile application development agency headquartered in Clermont-Ferrand, founded in 2007 and operating as a SAS (Société par Actions Simplifiée). The company specializes exclusively in custom native mobile application development for iOS (Swift/SwiftUI) and Android (Kotlin/Jetpack Compose), and additionally employs Kotlin Multiplatform (KMP) to share business logic across platforms while maintaining fully native user interfaces — a deliberate architectural choice that distinguishes it from cross-platform/hybrid competitors. Since 2023, Openium has operated as a subsidiary within the international engineering and consulting group HOUSE OF ABY, retaining its independent brand and team of approximately 34 specialists organized across iOS, Android, web, UX/UI design, and project management functions. The agency reports delivery of more than 400 applications over 18+ years and holds a 4.9/5 Google rating across 29 client reviews.

Openium's service portfolio spans the full mobile development lifecycle: UX/UI design in Figma, native iOS and Android development, backend/frontend web development (PHP/Symfony, React), mobile application audits, UI redesign, project framing and prototyping, ongoing maintenance (TMA), accessibility compliance (RGAA), and team augmentation. Specialized technical capabilities include IoT/BLE integration, augmented reality (ARKit), ERP/MES integration, and offline-first architectures. The company's revenue model is professional services: fixed-price or time-and-materials custom development projects, with multi-year maintenance contracts as a recurring revenue layer. Go-to-market is sales-led and direct, with clients acquired through website contact forms, a 2-minute online estimation tool, Microsoft Outlook booking, and content marketing. Pricing is not publicly disclosed and is established per project.

The customer base spans pharma/healthcare (Biocodex, SFMU, AFU, Genesis RH), energy (EDF Solutions Solaires), agriculture (NaviBennes, Limagrain), industrial/quality management (Intraqual Dynamic), and public administrations. Openium explicitly targets regulated verticals requiring compliance awareness (GxP, 21 CFR Part 11), as well as industry/manufacturing clients pursuing Industry 4.0 and field mobility initiatives. Secondary segments include startups and small businesses requiring MVP development. Distribution is single-country/domestic (France), with no marketplace listing, reseller network, or self-serve product.

Name

Openium

Legal name

SAS Openium

Website

https://openium.fr

Company type

Private

Founded year

2007

Operating status

Operating

Headcount range

11–50 employees

Short description

Openium is a French custom native mobile application development agency founded in 2007, specializing in iOS (Swift/SwiftUI) and Android (Kotlin/Jetpack Compose) development with Kotlin Multiplatform optimization. It serves enterprise, pharmaceutical, healthcare, and industrial clients from Clermont-Ferrand, operating as a subsidiary of HOUSE OF ABY since 2023.

Ownership category

akta.pro rank

Product category

Mobile Application Development Services

NAICS

Custom Computer Programming Services (541511)

SIC

Services-Computer Programming Services (7371)

akta.pro primary industry

Custom Application Development (Web/Mobile/Desktop) (BPAEAFAA)

Keywords

• Custom mobile app development
• Native iOS development
• Native Android development
• UX/UI design services
• Mobile application maintenance

Headquarters

HQ city

Clermont-ferrand

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Custom Application Development: Openium generates revenue through custom mobile application development projects for clients. Projects follow either Agile methodology (with sprints) or classical methodology (based on detailed specifications). Services include UX/UI design, iOS/Android native development, backend development, and ongoing maintenance and support.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Openium is a mobile application development agency that designs and builds custom native iOS and Android applications using Swift/SwiftUI and Kotlin/Jetpack Compose, with selective use of Kotlin Multiplatform to share business logic between platforms. The agency delivers end-to-end projects including UX/UI design, native development, backend integration, IoT connectivity, augmented reality, and ongoing maintenance, serving enterprises, mid-market firms, startups, and public administrations primarily in France.

Product overview

Openium is a mobile application development agency specializing in custom native applications since 2007. The company offers a comprehensive portfolio of mobile development services centered around two core products: native iOS development (using Swift/SwiftUI) and native Android development (using Kotlin/Java). These core offerings are complemented by strategic capabilities including Kotlin Multiplatform (KMP) for shared business logic between platforms, UX/UI design services, backend/frontend web development (PHP/Symfony, React), and specialized industry solutions for pharma, healthcare, and industrial IoT. Additional services include project auditing, UI redesign, prototyping, ongoing maintenance (TMA), accessibility compliance, and team augmentation. The company operates from Clermont-Ferrand, France, with a team of approximately 31 specialists organized into iOS, Android, Web, UX/UI Design, and Project Management teams.

Differentiator

Problem solved

Functional benefit

Products and services

• Native iOS Application Development
• Native Android Application Development
• Kotlin Multiplatform (KMP) Development
• UX/UI Design Services
• Backend & Frontend Web Development
• Mobile Application Audit
• UI Redesign Services
• Project Framing & Prototyping
• Maintenance & TMA Services
• Accessibility Services
• Team Augmentation / Delegation
• IoT Application Development
• Augmented Reality Application Development

Named customers8 records

Segments4 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration8 records

Feature5 records

Partnerships

One partnership is on record.

• HOUSE OF ABYcoreOthers · 1 January 2023In 2023, Openium joined the international engineering and consulting group HOUSE OF ABY. This strategic alignment provides Openium with broader organizational resources and positions the agency within a larger network of engineering and consulting expertise.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Bending Spoons: European (Italy-based) technology company developing and operating mobile applications at scale with strong native engineering capability. Comparable as a European mobile-centric software organization with similar native development focus, though at significantly larger scale.
• Theodo: French digital agency specializing in native mobile (iOS/Android) and web application development with strong focus on rapid MVP delivery and lean methodologies. Highly comparable as a France-based, custom-native mobile development agency competing for similar enterprise clients.
• Netguru: European (Poland-rooted) digital consultancy offering custom mobile and web application development services across industries. Comparable as a custom mobile development agency with enterprise clients, broader scale, and similar delivery methodology.
• Mobizel: French mobile development agency focused on native iOS and Android application builds for SMEs and large accounts. Comparable as a French native mobile app shop with similar project-based service offering.
• Backelite: France-based mobile and digital experience agency specializing in native iOS/Android application design and development. Directly comparable as a French native mobile development agency targeting enterprise clients.
• BAM (Build Anything Mobile): French mobile-first development agency delivering native iOS and Android applications for enterprise clients. Directly comparable as a French boutique native mobile app shop with similar service portfolio and project-based delivery model.
• Genio (by Devoteam): French mobile and connected device development agency, now part of Devoteam, delivering native iOS/Android applications. Comparable as a French native mobile app shop competing for similar enterprise and regulated-vertical engagements.

Broad incumbents

• Octo Technology: Large French digital transformation consultancy (part of Accenture) covering mobile, cloud, data, and design. Comparable as a French-headquartered custom mobile development provider, though operating at much larger scale and broader portfolio.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/openium
• Instagraminstagram.com/openium.applimobile
• Xx.com/openium

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles12 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Openium