Leading Mobile App Development Companies in Slovenia

Product teams and procurement managers often struggle to identify mobile app development firms that combine native and cross-platform technical skills with strong UX design, robust testing, and reliable post-launch support while meeting budget and regulatory requirements. Important comparison points include platform expertise, portfolio relevance, UX and accessibility standards, testing and security practices, backend and API integration capabilities, maintenance and support terms, communication and project management style, intellectual property arrangements, and transparent pricing.
SoftPro is the featured international partner leading this list and serves buyers across the region. Evaluate SoftPro against the same criteria—technical depth, UX design, quality assurance, integration and maintenance, and contract terms—used to compare local Slovenian providers.

1. SoftPro

SoftPro is the featured international partner on this list for companies in Slovenia seeking outsourced mobile and web application development. The firm is suited to startups, mid-market businesses, and corporate product teams that require cross-border delivery and long-term product support.

Technical delivery centers on the Microsoft stack with, .NET Core and C#, and the team executes cloud projects on Azure for cloud-native builds and migrations. The company also handles CMS implementations and migrations while pairing modernization work with ongoing maintenance and support.

Key Highlights

• Over 20 years of combined team experience across projects and long-term support.
• Cloud engineering across Microsoft Azure and AWS, including lift-and-shift migrations and containerization.
• AI capabilities that include large language model integration, RAG architectures, ML development, and ERP/CRM integration.
• Case studies and delivered projects include Umbraco website builds, SAAS ETL platforms, CRM/HRM systems and community gamification apps.

Services

• Custom software development
• Web application development
• Cloud engineering and migrations
• AI and machine-learning solutions.

Contact Information

Website: soft-pro.pl

Phone: +48 571 282 759

Address: Poland, Warsaw, Mazowieckie Voivodeship, 13 Erasmus Ciołka St. 401

LinkedIn: www.linkedin.com/in/kyrylo-o

2. Equaleyes d.o.o.

Equaleyes d.o.o. builds mobile and web platforms for regulated industries, engineering security-first architecture and integrations for banks, insurers and telecom operators. The team focuses on delivery that meets compliance, auditability, and operational reliability rather than visual polish alone.

They work as long-term engineering partners and list React Native for mobile front-ends and Python among solution options for backend work, enabling cross-platform mobile delivery alongside backend services and integrations. Equaleyes emphasizes close collaboration with product, architecture, security, and compliance teams to deliver mobile apps that connect to existing systems and payment flows.

Key Highlights

• 90+ engineers, architects, consultants and technology specialists are listed on the site.
• The company states 20+ awards and industry recognitions for products they helped build.
• Platforms they helped build have reached 1M+ users according to the official site.
• Awarded 4× Best Mobile Banking App by E-laborat Slovenia.

Services

• Digital Banking Infrastructure
• Payment Integrations
• Regulatory Technologies
• Enterprise Product Engineering

Contact Information

Website: equaleyes.com

Phone: +386 1 518 66 81

Email: sales@equaleyes.com

Email: careers@equaleyes.com

Address (Ljubljana): Brnčičeva ulica 39, 1231 Ljubljana – Črnuče, Slovenia

Address (Maribor): Razlagova ulica 4, 2000 Maribor, Slovenia

3. Calda (The Calda)

Calda is a Slovenia-based studio that builds AI-first mobile and web products for teams, using rapid, iterative delivery to move concepts into production-ready apps quickly. Their workflow emphasizes product strategy, continuous improvement, and AI-supported development to shorten launch timelines and keep mobile products evolving after release.

The company pairs data-driven launches with agentic development practices to support ongoing growth and operational AI features within shipped apps. That focus on fast, repeatable delivery makes Calda a fit for Slovenian companies that need production mobile apps delivered on tight timelines.

Key Highlights

• Recognized as an OpenAI Select Partner and noted among the first companies to join OpenAI’s global Partner Network.
• Maintains high security and privacy standards, including SOC2, HIPAA, and GDPR compliance.
• Over 150 completed projects and a reported 4.9 client satisfaction score across public reviews.
• Proven payments experience, having integrated Stripe systems that scaled to over $20M in ARR.

Services

• AI Engineering
• Product Strategy
• UX/UI Design
• Agentic Development

Contact Information

Website: thecalda.com

Address: Ljubljana, Slovenia Gospodinjska ulica 8 1000, Ljubljana

Address: New York, USA 450 Seventh Ave New York, NY 10123

4. Creativio (wearecreativio)

Creativio is a Slovenian digital product studio that designs and builds iOS and Android mobile applications, web platforms, IoT integrations, and UX/UI for clients across museums, healthcare, luxury retail, and SaaS.

The agency highlights 20 years of experience and showcases case studies for a Schloss Schönbrunn visitor app, medical mobile applications, and IoT door-management projects, demonstrating delivery across regulated and hardware-integrated assignments.

Key Highlights

• Creativio won the DNA Paris Design Award in 2021 and an IDA Design Award in 2020.
• The firm reports having served 300+ clients on its website.
• The company lists offices in Maribor and Ljubljana (Slovenia) and operational locations in Vienna and London.
• The site displays an international Certificate of Excellence alongside multiple design-award badges.

Services

• Mobile applications
• Web solutions
• IoT solutions
• UX / UI Design

Contact Information

Website: wearecreativio.com

Phone: 080 11 89

Phone: +44 20 81 333 476

Email: maribor@wearecreativio.com

Email: ljubljana@wearecreativio.com

Email: vienna@wearecreativio.com

Email: london@wearecreativio.com

Address: Tovarna idej, Osojnikova ulica 17, 2000 Maribor

Address: Tovarna idej, Cankarjeva 3, 1000 Ljubljana

Address: Kantgasse 3/6, 1010 Vienna

Address: 1E Poultry Ave, Farringdon, London EC1A 9PT

([wearecreativio.com](https: //wearecreativio.com/?utm_source=openai))

5. Positiva rešitve d.o.o.

Positiva rešitve d.o.o. builds hybrid mobile applications using frameworks like Framework7, Ionic and PhoneGap/Apache Cordova to deliver consistent cross-platform experiences. Their mobile work is tied to business workflows and back-end integrations so apps operate as part of broader enterprise solutions.

The team combines marketing and creative know‑how with technical development to produce business-facing apps and integrations that support B2B portals and operational processes. Client references on the site cite completed projects that included B2B portals, ERP integrations and mobile solutions, demonstrating delivered, integrated mobile projects.

Key Highlights

• Microsoft Silver Partner
• Azure specialist
• 13 years of experience
• 250+ satisfied clients

Services

• Umbraco development
• E-commerce development (Magento, WooCommerce)
• Websites & UX
• IT infrastructure and cloud services

Contact Information

Website: positiva.si

Phone: +386 1 620 33 13

Email: info@positiva.si

Address: Tržaška cesta 286 D, 1000 Ljubljana, Slovenija

6. GRECO d.o.o.

GRECO d.o.o. is a Maribor-based development and design studio that builds custom mobile applications and digital products for businesses. The company pairs product-focused UX/UI design with front-end and back-end engineering to shape mobile experiences.

Greco manages projects from prototyping through delivery and ongoing maintenance, offering a single-vendor workflow for design, development, testing, and updates. This end-to-end delivery model suits organizations that need coordinated product design and long-term operational support.

Key Highlights

• Founded in 1992; the site highlights 30+ years of experience.
• Lists native development for iOS (Swift) and for Android and Huawei devices, plus cross-platform stacks React Native and Flutter.
• The site states Greco developed more than 15 web and mobile applications for Zavarovalnica Sava.
• Long-term partners named on the site include Nuklearna elektrarna Krško and Next Sight.

Services

• Custom mobile applications
• UX/UI design
• Backend & API development
• Maintenance and upgrades

Contact Information

Website: greco.si

Phone: 00 (0)59 083 052 / 00 386 (0)41 918 346

Email: info@greco.si

Address: Betnavska cesta 120, 2000 Maribor, Slovenia

7. BEPET

BEPET is a Ljubljana-based digital studio that builds mobile applications, web applications, and websites from concept through launch. The team pairs UX research and UI design with platform integrations and marketing work to deliver production-ready apps and sites for regional clients.

BEPET’s delivery approach emphasizes iterative design, visual storytelling, and integration with advertising and registration tools to move projects from idea to measurable outcomes. The studio documents case work and performance improvements on its site to show how designs translate to user growth.

Key Highlights

• Case portfolio on the site highlights projects named I-Trophy (mobile app), Nova univerza (web application), and Julian Alps Trail Run (web application).
• The studio implements WordPress-based sites with a visual editor and external registration forms that support direct transactions.
• Marketing and analytics integrations listed include Google Ads, Facebook Pixel, and Instagram advertising to increase conversions.
• A showcased client outcome for Julian Alps Trail Run reports +20% international participants, +65% more inquiries, and +100% more registrations during the first year.

Services

• Mobile applications
• Web applications
• Websites

Contact Information

Website: bepet.org

Email: info@bepet.org

Address: Pod hribom 55, 1000 Ljubljana

8. Kompas Xnet

Kompas Xnet develops custom business applications and delivers systems integration, SharePoint, and BI solutions for enterprise clients. The company connects application front ends to Microsoft platforms and enterprise back ends to support secure deployments and operational handover for business projects.

Key Highlights

• Kompas Xnet is the organiser of the annual THRIVE conference that focuses on trends and developments in modern IT technologies.
• The company operates a testing centre with recognised partners Certiport, Pearson VUE, and PSI.
• Public-sector and large-enterprise references include an intranet portal for Termoelektrarna Šoštanj and SharePoint projects for the Republic of Slovenia Ministry of the Interior.
• Course participants receive free telephone or email support for between 3 and 12 months depending on the programme.

Services

• IT infrastructure services
• Systems integration & cyber security
• Education and examination centre

Contact Information

Website: kompas-xnet.si

Phone: +386 1 5136 990

Email: info@kompas-xnet.si

Address: Stegne 7, 1000 Ljubljana

9. TriTim d.o.o.

TriTim d.o.o. is a Ljubljana-based digital studio that builds custom web platforms and mobile app projects for Slovenian small and medium enterprises. The company focuses on delivering production-ready software with attention to performance and integrations with existing business systems.

The team follows an MVP-first delivery approach and adds AI-enhanced features such as chatbots to accelerate validation and deployment. Their work often includes backend integrations and practical e‑commerce capabilities to help clients move from idea to measurable results.

Key Highlights

• Runs a research and development project for a Progressive Web App (PWA) that the site indicates is co-financed by the European Union.
• Publishes client satisfaction metrics on the site: 4.9/5 average from 80 ratings and a 100% recommendation rate.
• Delivered named mobile projects including "Mobilna aplikacija za računovodski servis AZA PLUS" (invoice archive and business-result overview) and "Mobilna aplikacija za ličarje podjetja Silco" (product catalog, barcode scanner, technical documentation access).
• Sells smart EV charging stations (11 kW–22 kW) marketed with app control and RFID access through their online shop.

Services

• Progressive Web Apps (PWA)
• Native and hybrid mobile apps
• E‑commerce with ERP integration
• AI chatbots & automation

Contact Information

Website: tritim.si

Phone: 01 520 47 11

Email: info@tritim.si

Address: TriTim d.o.o., Vojkova 58, 1000 Ljubljana

10. BlaM Technologies

BlaM Technologies is a Maribor-based development firm that designs and builds mobile applications, desktop software, and custom websites for Slovenian clients. The company manages projects from initial planning and design through development, deployment, and ongoing maintenance.

The team handles post-launch work including server configuration, hosting, app-store submission, and promotional activities. Their portfolio shows work for automotive marketplaces and healthcare utilities, which demonstrates delivery across both consumer and business-facing mobile products.

Key Highlights

• Included in the DIH Slovenia catalogue, enabling client projects to qualify for digitalisation vouchers that can cover up to 60% of project costs.
• Develops mobile applications for Android, iOS, and Windows Phone.
• Built a Unity-based Android game called Paint Rider.
• Portfolio items include Paauction (vehicle wholesale platform), GoAuto app (vehicle management) and Pill Remind (medication reminder).

Services

• Mobile applications
• Desktop applications
• Websites & e-commerce
• Hardware & networking

Contact Information

Website: blam.si

Address: Ulica heroja Nandeta 37, 2000 Maribor

Email: info@blam.si

Phone: +386 5 99 88 577

Phone: +386 31 321 560

11. Creatim d.o.o.

Creatim d.o.o. develops web and mobile applications with a user-centered product approach that emphasizes concept validation and iterative releases. Their teams combine UX research, prototyping, and engineering to move ideas from initial tests to production-ready apps.

An experienced project manager oversees delivery with transparent milestone reporting and continuous operational support after launch. That delivery focus, plus experience building secure, scalable applications, aligns Creatim with companies seeking mobile app development in Slovenia.

Key Highlights

• ISO 27001 certification for information security as stated on the company site.
• Alma, the company’s virtual tourist assistant, received a Golden City Gate Award in 2026.
• SIQ and IQNet certifications are listed among the company’s credentials.
• IBM Sollution Exellence badge appears among partner and recognition logos on the site.

Services

• Digital strategy
• Web applications
• AI applications
• E-commerce

Contact Information

Website: creatim.com

Phone: 040 524 984, 040 524 986

Address: Delavska cesta 26, 4208 Šenčur

12. E‑KODA minerva (E‑KODA)

E‑KODA minerva is a Maribor-based software studio that builds bespoke web and mobile applications with a practical, cost-conscious delivery approach. The team focuses on compact, maintainable solutions aimed at small and mid-size clients across Central Europe.

Its delivery emphasizes responsive web interfaces and lightweight native-hybrid mobile apps built to integrate with existing business processes. The company pairs front-end JavaScript work with server-side PHP/MySQL back ends and maintains several of its own public projects to demonstrate capabilities.

Key Highlights

• Uses NativeScript and Ionic for building hybrid native mobile applications.
• Server-side stack explicitly lists PHP and MySQL alongside JavaScript, jQuery, and AJAX for web applications.
• Operates and developed public projects including, vodim.si, and to showcase real-world deployments.
• Offers automated PDF and .doc generation features plus label-making capabilities for backend document workflows.

Services

• Mobile app development (NativeScript & Ionic)
• Web application development (PHP / MySQL)
• Responsive web design
• CMS & WordPress integration

Contact Information

Website: e-koda.com

Email: robert.kraner@e-koda.com

Address: Borcev za severno mejo 12, 2000 Maribor, Slovenia

Conclusion

When choosing among Slovenian mobile app development firms, prioritize project scope and stage, regulatory and security requirements, desired pace of iteration, and long-term maintenance budget. Decide whether enterprise systems integration, AI-driven experimentation, or cross-platform delivery matters most, and weigh vendor experience against those priorities.
SoftPro is the featured international partner on this list for companies in Slovenia seeking outsourced mobile and web application development. Narrow your shortlist to two or three vendors that match your primary criteria, run a focused discovery to compare timelines, communication style, and references, and select the team whose delivery approach best fits your roadmap and risk tolerance.