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๐Ÿ™ Calda is an award-winning, AI-native product development company and an OpenAI Select Partner. We help startups, scaleups, and established organizations design, build, modernize, and scale mobile applications, web platforms, internal business systems, and AI-powered digital products.

With more than 100 digital products delivered and a 4.9 out of 5 rating on Clutch, Calda is known for its speed, quality, transparency, ownership, and commitment to going the extra mile.

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

1 Locations

  • Ljubljana , Slovenia

Select Focus Area
Application Platforms
Other app platform
100%
Low Code Development
No Code Development
Xano
35%
Frameworks and CMS
Programming & Scripting
Python
30%
SQL
20%
HTML5
10%
Typescript
10%
Industries
Information technology
100%
Clients
Midmarket ($10M - $1B)
50%
Enterprise (>$1B)
30%
Small Business (<$10M)
20%
Certified in:
Mobile App Development UX/UI Design iPhone iOS App Development Android App Development

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 and good value for cost, with clients noting their budget fit and high-quality deliverables. They typically engage small teams (2-10 members) and demonstrate strong project management, consistently meeting deadlines and adapting to client needs.

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

  • High-Quality Deliverables

    Clients consistently report receiving high-quality deliverables that meet or exceed expectations. Calda's work is described as functional, efficient, and aligned with initial designs and specifications.

  • Commitment and Dedication

    The teamโ€™s commitment to delivering on time and their willingness to work long hours, including weekends and holidays, is highly valued by clients, especially under tight deadlines.

  • Strong Project Management Skills

    Clients frequently commend Calda for their excellent project management. The team is responsive, meets deadlines, communicates effectively through virtual and in-person meetings, and adapts to evolving project needs.

  • Innovative and Proactive Solutions

    Calda stands out for their proactive approach and innovative solutions, often suggesting enhancements that clients hadnโ€™t considered, which significantly contribute to project success.

  • Impressive Communication and Collaboration

    Calda's team is noted for their strong communication skills and collaborative approach. They maintain clear and constant communication, making clients feel involved and informed throughout the project lifecycle.

  • Room for Improvement in Communication Detail

    A few clients noted that Calda could improve by providing more detailed communication, suggesting potential language barriers or the need for more in-depth project scoping.

Calda Reviews

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Mobile App Development for Productivity-Focused Products Co

  • Mobile App Development
  • iPhone iOS App Development Productivity Mobile App Development Hybrid & cross platform apps Flutter
  • 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.

End-To-End Development Services for Social App

  • Custom Software Development Mobile App Development UX/UI Design
  • Android App Development iPhone iOS App Development Social App Development
  • $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

โ€œCalda did a great job and fully met our expectations throughout the project.โ€

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.

AI Development for Financial Services Co

  • AI Development
  • Machine Learning Natural Language Processing
  • 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.

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
  • FlutterFlow UX Strategy Consumer Mobile App Development Android App Development iPhone iOS App Development
  • $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
  • UX Strategy Android App Development iPad iOS App Development iPhone iOS App Development Webflow Flutter
  • $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
  • Android App Development iPhone iOS App Development Python SQL Typescript
  • $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
  • Airtable Android App Development iPhone iOS App Development
  • 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.

Showing 1-10 of 24 Reviews

Locations (1)

Gospodinjska ulica 8 LjubljanaSlovenia 1000

16 - 20

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