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Calda🐙 is an award-winning mobile and web app development studio and the #1 FlutterFlow Agency of the Year (2025). We design and build high-quality, scalable applications for startups and established companies across the USA, Europe, and the UAE. 

We don’t just move fast—we build with precision: clean architecture, reliable backends, and products users genuinely enjoy.

Our Work

  • Min project size
    $10,000+
  • Hourly rate
    $50 - $99 / hr
  • Employees
    10 - 49
  • Locations
    Ljubljana, Slovenia
  • Year founded
    Founded 2022

1 Locations

  • Ljubljana , Slovenia

No have been added yet...

    Pricing Snapshot

    Min. project size $10,000+
    Avg. hourly rate $50 - $99 /hr
    Rating for cost 4.9 /5

    What Clients Have Said

    Calda offers competitive pricing with good value for cost, as clients frequently mention budget alignment and effective communication. They handle projects ranging from MVPs to complex apps with dedicated teams of 2-10 employees, ensuring timely delivery and responsiveness throughout the development process.

    This summary is based on verified Clutch reviews.

    Most Common Project Size

    $10,000 - $49,999 based on 11 reviews
    < $10,000 $10,000 - $49,999 $50,000 - $199,999 > $200,000

    Select a service to see pricing information

    Highly Rated Similar Providers

    Calda Review Insights

    Overall Review Rating

    4.9
    • Quality 4.9
    • Schedule 4.7
    • Cost 4.9
    • Willing to Refer 4.9

    Top Mentions

    Review Highlights

    • Effective Communication and Collaboration

      Calda's communication is frequently praised for being clear and consistent. They use various communication tools to keep clients informed and involved throughout the project lifecycle.

    • Areas for Improvement in Communication Detail

      A client mentioned that Calda could improve the level of detail in their communication, possibly due to language barriers. This suggests an area for potential enhancement in their services.

    • Strong Project Management Skills

      Clients commend Calda for their effective project management, timely delivery, and responsiveness. They maintain clear communication and adapt to evolving project needs, ensuring projects stay on track.

    • Proficient in Mobile App Development

      Calda consistently delivers functional and well-designed mobile apps across various industries. Clients appreciate their ability to handle app development from concept to launch, ensuring a smooth and effective process.

    • Successful MVP and Prototype Development

      Calda excels in developing MVPs and prototypes that meet client specifications and facilitate successful testing and feedback collection, contributing to project success.

    • Cultural Fit and Aligned Values

      Clients appreciate Calda's culture fit and alignment with company values, which enhances collaboration and project outcomes. Their team is described as enthusiastic and engaged.

    Calda Reviews

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    End-To-End Development Services for Social App

    • Custom Software Development Mobile App Development UX/UI Design
    • $10,000 to $49,999
    • July 2024 - Feb. 2025
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    “Calda did a great job and fully met our expectations throughout the project.”

    Sep 24, 2025
    Co-Founder, Superdex
    Andrew Oehler
    Verified
    • Other industries
    • Denver, Colorado
    • 1-10 Employees
    • Online Review
    • Verified

    Calda provided end-to-end development services for a social app, from the early concepts and sketches to a functional mobile app. The team used FlutterFlow for the frontend and Supabase for the backend.

    Web Development for Ticketing & Marketing Company

    • Custom Software Development UX/UI Design Web Development
    • Confidential
    • Nov. 2024 - Feb. 2025
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Their responsiveness, problem-solving mindset, and ability to adapt to evolving requirements set them apart."

    Jan 31, 2025
    CEO & Founder, BrightStar Live Events, LLC
    Akal Sahai Khalsa
    Verified
    • Other industries
    • Saco, Maine
    • 1-10 Employees
    • Online Review
    • Verified

    Calda developed a multi-vendor event marketplace for an event marketing solutions company. The goal was to simplify event management through a user-friendly platform with AI features.

    Mobile App Dev for Advertising Company

    • Low/No Code Development Mobile App Development UX/UI Design
    • $10,000 to $49,999
    • Feb. 2024 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Their dedication to quality and attention to detail make them stand out."

    Nov 16, 2024
    Founder & CEO, Knight & Knave
    Eric Druckenmiller
    Verified
    • Advertising & marketing
    • South Salem, New York
    • 1-10 Employees
    • Online Review
    • Verified

    Calda provides mobile app development services for an advertising company. The tasks include designing the app's UX/UI and custom development in Flutter and FlutterFlow.

    UI/UX Design & Software Development for Real Estate Solutions Provider

    • Custom Software Development Mobile App Development UX/UI Design
    • $10,000 to $49,999
    • Sep. 2023 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "They want their projects to be amazing, on budget, and on time."

    Apr 8, 2024
    Owner, All Things NWA
    Phillip Shepard
    Verified
    • Other industries
    • 1-10 Employees
    • Online Review
    • Verified

    Calda was hired by a real estate solutions provider for their UI/UX design and software development services. The team is responsible for iOS and Android incorporation, admin and data management, and ongoing maintenance and support.

    Mobile App MVP Dev for Healthcare Services Platform

    • Mobile App Development UX/UI Design
    • Confidential
    • Mar. - June 2023
    4.5
    Quality
    4.5
    Schedule
    4.0
    Cost
    5.0
    Willing to Refer
    4.5

    "They were very responsive to my needs and communicative throughout the partnership."

    Jul 13, 2023
    Founder & Chief Operator, Functional Health
    Kevin Till
    Verified
    • Other industries
    • Goleta, California
    • 1-10 Employees
    • Online Review
    • Verified

    Calda Technologies designed and developed the MVP version of a healthcare services platform. The team integrated Supabase for the backend, Firebase for authentication, and third-party APIs.

    Mobile App Development for Fast Food Restaurant

    • Custom Software Development Mobile App Development UX/UI Design Web Development
    • $10,000 to $49,999
    • Oct. - Nov. 2022
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Calda made sure that the process was quick and efficient, which was of utmost importance to me."

    May 17, 2023
    CEO, Fast Food Restaurant
    Anonymous
    Verified
    • Other industries
    • Ljubljana, Slovenia
    • 11-50 Employees
    • Online Review
    • Verified

    Calda developed a fast food restaurant's mobile app featuring a loyalty system. The vendor made the UX wireframes, designed the UI, built the frontend in Bravio Studio, and created the backend in Supabase.

    MVP Development Services for IT Company

    • Application Testing Mobile App Development UX/UI Design
    • Confidential
    • May 2022 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    4.5
    Cost
    5.0
    Willing to Refer
    5.0

    "Everything was great."

    May 11, 2023
    Co-Founder, IT Company
    Anonymous
    Verified
    • Other industries
    • United Arab Emirates
    • 1-10 Employees
    • Online Review
    • Verified

    Calda has built an MVP for an IT company. The team has worked on features that allow users to sign up and verify their accounts, view news and access RSS feeds, opt in and out of memberships, and set meetings.

    Mobile App Dev for Soft Skill Development Company

    • Mobile App Development UX/UI Design
    • Less than $10,000
    • Sep. - Dec. 2022
    5.0
    Quality
    4.5
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "The Calda team was fun to work with."

    Apr 5, 2023
    Founder, Poccit, Inc.
    Joey Kappen
    Verified
    • Education
    • Cincinnati, Ohio
    • 1-10 Employees
    • Online Review
    • Verified

    Calda created a prototype for a soft skill development company. They used Bravo Studio to create the MVP based on the client's Figma wireframes. They launched the app on the App Store and Google Play Store.

    Mobile App Dev for Social Networking Company

    • Mobile App Development UX/UI Design
    • $10,000 to $49,999
    • June 2025 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "They care about our product."

    Apr 8, 2026
    CEO, Recap
    Matej Ivanetic
    Verified
    • Consumer products & services
    • Slovenia
    • 1-10 Employees
    • Online Review
    • Verified

    Calda provides mobile app development services for a social networking platform. The team is tasked with building the app from scratch based on the client's idea.

    Mobile App Development for Productivity-Focused Products Co

    • Mobile App Development
    • Confidential
    • May 2025 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    4.5
    Cost
    5.0
    Willing to Refer
    4.5

    "Calda's design and technical quality are equally strong."

    Mar 30, 2026
    CEO, Analog Labs LLC
    Carl Swanson
    Verified
    • Consumer products & services
    • San Francisco, California
    • 1-10 Employees
    • Online Review
    • Verified

    Calda has provided mobile app development services for a productivity-focused products company. The team handled UX/UI design, backend integration, paywall integration, and push notification setup.

    Showing 1-10 of 23 Reviews

    Locations (1)

    Gospodinjska ulica 8 LjubljanaSlovenia 1000

    16 - 20

    Contact Calda

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    Recap

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    Recap App

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