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Calda

Verified company

🌟 Your Certified Mobile & Web App Development Partner 🌟 🏅 FlutterFlow Agency of the Year 2025 🏅

Ljubljana, Ljubljana (SI)
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Trusted by

Selected clients

SSubwaySSuperplanWWildsoundMMobioTCCRW

Capabilities

What they do, who they serve, and the stack they build on.

Technologies

FigmaFlutterNext.jsReactSupabaseFirebaseJavaScriptPythonStripeTypeScript

Selected work

A snapshot of recent projects and outcomes.

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What clients say

Arullo AI

Calda is known for

high client satisfactionaward-winning expertiserapid deliveryin-house team

Clients consistently commend Calda for their exceptional design skills, clear communication, and dedication to delivering projects efficiently. Their ability to map processes and manage time frames effectively is highly appreciated, ensuring projects are on budget and on time. Clients also value their expertise in navigating complex technical challenges and their passion for creating high-quality, user-friendly applications.

Client testimonials

“Working with Calda has been a fantastic experience. Their design skills and tech know-how are top-notch, communication is clear, and they really go the extra mile. They show real passion and make it feel like we're all in this together.”

E

Eric Druckenmiller

Product Owner, Wildsound

“Calda's development speed and knowledge made them the perfect partner for us. Their expertise and dedication exceeded our expectations, playing a vital role in bringing our ambitious project to a further stage.”

M

Mika Gabriëls

BTV

“We loved working with Calda because of their professional approach and high level of expertise. They made sure that the development process was quick and efficient, which was of utmost importance to us.”

D

Development Agent

Subway CEE Region

“The thing that I appreciated the most was how they mapped the whole process for me and made sure I was aware of time frames and pricing. Everyone has been on the same page since day 1.”

P

Phillip Shepard

Client Keeper

“I found Calda through the Flutter Flow ambassador program. So glad I did. Calda has taken my big idea and reshaped it into a beautiful app - overcoming huge complexity as a genuine partner to realise an outcome I haven't even envisioned. Recommended.”

J

Joshua Rex

CRW

Reviews

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Calda is a premier mobile and web app development studio recognized for its rapid delivery and high-quality solutions. Serving startups and established businesses across the USA, Europe, and the UAE, Calda stands out with its expertise in FlutterFlow and Supabase, earning the prestigious FlutterFlow Agency of the Year Award in 2025. With a 4.9/5 rating from 24 reviews, clients consistently praise their precision and speed.

  • Client satisfaction: Boasting a 4.9/5 rating on Clutch from 24 reviews, Calda is highly regarded for its client-centric approach.
  • Award-winning expertise: Named FlutterFlow Agency of the Year 2025 and App Design Of The Year 2024 at FFDC.
  • Global reach: Over 100 projects delivered for clients in the USA, Europe, and UAE, including Subway and Superplan.
  • In-house talent: A dedicated team of 30+ experts ensures all projects are handled internally, maintaining quality and accountability.
  • Diverse technology stack: Specializes in Flutter, React, Next.js, and AI integrations, providing tailored solutions for varied needs.

Calda’s commitment to excellence is reflected in its rigorous project management and the full ownership of source code and data, ensuring long-term client success.

Locations

Ljubljana, Slovenia

Headquarters

Rates & ideal client

What this firm typically charges and who they're built for.

Min project budget

$10,000+

Hourly rate

$50 – $99/hr

Team size

11–50

Social media

LinkedInXInstagramYouTube

Industry Recognition

Agency of the Year 2025App Design Of The Year 2024Clutch Global Fall 2024