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Your idea. Faster.

We develop mobile and web apps in a matter of weeks, not months. 

Calda is an award-winning 🏆 mobile and web app development studio. 

We are one of the top ✅ FlutterFlow and ✅ Supabase certified experts in the world developing custom and scalable solutions for our clients. 

We've helped 70+ established businesses and startups across the USA, and Europe to realize their ideas into cutting-edge products quickly and efficiently. We won 🏆 App Design Of The Year Award at FFDC '24. 

  • 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's pricing is consistently noted as fitting clients' budgets, providing good value for cost. Clients appreciate their transparency, responsiveness, and ability to deliver complex projects on time, often exceeding expectations without significant cost overruns.

    This summary is based on verified Clutch reviews.

    Most Common Project Size

    $10,000 - $49,999 based on 10 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 5.0

    Top Mentions

    Review Highlights

    • Positive Impact on Client Business

      Clients report significant business benefits from Calda's work, including increased profitability, improved user engagement, and successful app launches that meet or exceed business objectives.

    • Dedicated Team with a Can-Do Attitude

      Calda's commitment and can-do attitude are frequently highlighted, with the team going above and beyond to meet tight deadlines and challenging requirements, often working extra hours to ensure success.

    • Successful MVP and Prototype Development

      Calda has effectively developed MVPs and prototypes that align with client visions, enabling testing and feedback collection to refine products before full-scale launch.

    • Effective Use of Modern Tools and Technology

      Calda effectively utilizes modern tools like FlutterFlow, Supabase, and Bravo Studio, enabling efficient development processes and high-quality app functionalities. Their technical proficiency is a key strength.

    • Minor Communication Improvement Needed

      While overall communication is praised, one client suggested that more detailed communication could enhance understanding, potentially due to language barriers. This is an area for potential refinement.

    • Enthusiastic and Engaged Team

      The Calda team is described as genuinely excited and engaged in their projects, bringing enthusiasm and a partnership mentality that enhances the client experience and project outcomes.

    Calda Reviews

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    Services
    Project cost

    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.

    AI Development for Financial Services Co

    • AI Development
    • Confidential
    • Jan. 2025 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Calda doesn't wait for perfect specs; they get stuck in, figure things out, and keep moving."

    Jun 24, 2025
    Founder & CEO, Superplan
    Jose Supico
    Verified
    • Financial services
    • London, England
    • 1-10 Employees
    • Online Review
    • Verified

    Calda has been helping a financial services company with FlutterFlow development, backend development, and AI integration. The team has handled an end-to-end platform for financial advisors.

    Mobile App Dev & UX/UI Design for Sports Technology Company

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

    "They communicated daily and were available at almost any time to deal with changes."

    Feb 7, 2025
    Co-Founder, Sports Technology Company
    Matthew Tabor
    • Sports
    • Houston, Texas
    • 1-10 Employees
    • Online Review

    Calda designed and developed the initial version of a sports technology company's mobile app.

    Showing 1-10 of 21 Reviews

    Locations (1)

    Gospodinjska ulica 8 LjubljanaSlovenia 1000

    16 - 20

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