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🐙Calda🐙 is an award-winning AI-native product studio, recognized as FlutterFlow Agency of the Year 2025 & 2026, FlutterFlow App Design of the Year 2024 & 2026, and a Clutch Global Award winner. 

We are certified partners and experts across leading product technologies, including FlutterFlow, Supabase, Stripe, RevenueCat, Expo, and Vercel.

We design, build, and scale high-quality digital products for startups, scaleups, and established companies across the USA, Europe, and the UAE.

  • 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

  • Great Culture Fit and Client Alignment

    Calda is often chosen for their cultural fit and alignment with client values, which fosters a positive working relationship and enhances project outcomes.

  • 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.

  • Proficiency in App Development

    Calda is consistently praised for their expertise in building production-ready apps, handling UI/UX design, backend development, and app deployment across various industries, from diabetes management to social networking and productivity tools.

  • Innovative and Proactive Solutions

    Calda stands out for their proactive approach and innovative solutions, often suggesting enhancements that clients hadn’t considered, which significantly contribute to project success.

  • 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.

  • 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.

Calda Reviews

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Mobile App Development for Diabetes App Company

  • Mobile App Development
  • Health & Wellness 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.

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.

Low Code Mobile App Dev & Design for Social Media Startup

  • Low/No Code Development Mobile App Development UX/UI Design
  • FlutterFlow Android App Development iPhone iOS App Development Social App Development
  • Confidential
  • Mar. - Oct. 2024
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They understood our vision and made a significant contribution to refining our concept."

Nov 3, 2024
Co-Founder, CRW
Joshua Rex
Verified
  • Other industries
  • Australia
  • 1-10 Employees
  • Online Review
  • Verified

Calda developed and designed a mobile app for a social media startup. The team built the app for Android and iOS, performed low-code and custom-code development, and integrated several APIs.

Social Media App Dev for Bio-Pesticides Company

  • Custom Software Development Graphic Design
  • Brochure & Pamphlet Design
  • Confidential
  • Oct. 2023 - Aug. 2024
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Their collaborative culture and emphasis on continuous improvement fostered a dynamic and motivating environment."

Aug 2, 2024
President, Atomes Bio
Dori Dagher
  • Other industries
  • Montreal, Quebec
  • 51-200 Employees
  • Online Review

A bio-pesticides company hired Calda to build a social media app from scratch. The team also worked on building a geo-location feature.

Mobile App Development for Nonprofit Organization

  • Mobile App Development
  • FlutterFlow Business Intelligence Mobile App Development Field Operations Mobile App Development Consumer Mobile App Development Android App Development Other mobile OS
  • $10,000 to $49,999
  • Feb. - July 2024
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Calda's proficiency in engineering custom-built apps helped propel our nonprofit to the forefront in the personal, professional, and spiritual leadership development sector."

Jul 9, 2024
Executive, ChaplainCare LLC
Anonymous
Verified
  • Other industries
  • Arlington, Tennessee
  • 1-10 Employees
  • Online Review
  • Verified

Calda provided engineering and backend support for a nonprofit organization's mobile app. Their work involved data modeling, UI/UX modifications, database setup, FlutterFlow development, and testing.

Mobile App Development for Medical Platform

  • Mobile App Development
  • React Native
  • Confidential
  • Jan. - Nov. 2023
5.0
Quality
4.0
Schedule
5.0
Cost
4.0
Willing to Refer
5.0
"Calda always took the time to troubleshoot and explain issues to us in person if needed. We never felt left alone."
Nov 7, 2023
Co-Founder & CPTO, Medical Platform
Thanh Schrader-Nguyen
Verified
  • Medical
  • Berlin, Germany
  • 1-10 Employees
  • Online Review
  • Verified

A medical platform hired Calda to build their MVP. The team maintained an alpha app based on BravoStudio and Xano, working on frontend development, testing, database formation, and more.

Figma App Design for Shark Forecasting Platform

  • Mobile App Development UX/UI Design
  • Xano
  • Less than $10,000
  • June - July 2023
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Their experience, quality work, and willingness to help were highly appreciated."

Jul 26, 2023
Founder, SafeWaters.AI
Evan Valenti
Verified
  • Other industries
  • Boston, Massachusetts
  • 1-10 Employees
  • Online Review
  • Verified

Calda was hired to improve the Figma-based designs of a shark forecasting platform. The team modernized the designs to match Apple and Google's requirements and provided further development support.

UI/UX Design & Mobile App Development for E-Commerce Company

  • Custom Software Development Mobile App Development UX/UI Design Web Development
  • Other app platform
  • Confidential
  • June - July 2023
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Calda's service was perfect."

Jul 12, 2023
CEO, E-Commerce Company
Anonymous
  • eCommerce
  • Paris, France
  • 1-10 Employees
  • Online Review

Calda provided development services for an e-commerce company. The team created a customer portal management system on the client's mobile application.

Mobile App Dev for Museum

  • Application Testing Custom Software Development Mobile App Development Other Application Development
  • Other mobile OS
  • Confidential
  • Feb. - June 2023
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They worked very fast and were very responsive to any changes needed."

Jun 8, 2023
CEO, MuseMuse.app
Kimberley Puchois
Verified
  • Education
  • London, England
  • 1-10 Employees
  • Online Review
  • Verified

Calda provided web development services for the museum. They built an MVP version of a cross-museum guide app, including UX design, Figma database structure, API bridge structure, and data binding.

Showing 11-20 of 24 Reviews

Locations (1)

Gospodinjska ulica 8 LjubljanaSlovenia 1000

16 - 20

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Recap

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Recap App

Subseven

(1)
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Chris Putsch

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