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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, fitting various budgets while delivering high-quality services. Clients appreciate their value for cost, timely delivery, and responsiveness. Team sizes range from 2-10 members, ensuring personalized attention across projects.

    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 4.8
    • Cost 4.9
    • Willing to Refer 4.9

    Top Mentions

    Review Highlights

    • Positive Client Feedback and Results

      Calda's work often results in positive client feedback, with measurable outcomes such as successful app launches, user satisfaction, and increased business profitability. Clients express satisfaction with the final products delivered.

    • Impressive Technical Expertise

      Clients have highlighted Calda's technical expertise, especially in using tools like FlutterFlow, Supabase, and Bravo Studio. Their ability to integrate various APIs and handle complex technical challenges is well-regarded.

    • Excellence in App Development

      Calda has been repeatedly praised for their ability to deliver high-quality mobile applications tailored to specific client needs. Clients from various industries have highlighted their proficiency in app development, UI/UX design, and backend integration, often exceeding expectations.

    • Strong Project Management Skills

      Clients consistently commend Calda for their effective project management. They deliver projects on time, maintain clear communication, and are responsive to client needs, ensuring that projects stay on track and within budget.

    • Areas for Improvement in Communication Detail

      While generally praised for communication, one client suggested that Calda could improve the level of detail in their communications. This feedback indicates an area where Calda could enhance their service.

    • Effective Communication and Responsiveness

      Calda's team is highly communicative, using virtual meetings, emails, and messaging apps to keep clients informed. They are praised for their responsiveness and ability to address client concerns promptly.

    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 Development for Diabetes App Company

    • Mobile App Development
    • Confidential
    • Apr. 2025 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Calda's team is really good."

    Apr 17, 2026
    CEO, Subseven
    Chris Putsch
    Verified
    • Other industries
    • United States
    • 1-10 Employees
    • Online Review
    • Verified

    Calda has designed and built a production app from scratch, ready for app store distribution, for a diabetes app company. The team has handled UI/UX design, backend development, testing, and app deployment.

    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.

    Showing 1-10 of 24 Reviews

    Locations (1)

    Gospodinjska ulica 8 LjubljanaSlovenia 1000

    16 - 20

    Contact Calda

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    Recap

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    Recap App

    Subseven

    (1)
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    Chris Putsch

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