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Custom B2B digital products, built AI-native.

Notch is an AI engineering partner for medium-to-large enterprises. We build agentic solutions, custom AI models, and software-based digital products with AI embedded across every team and every stage of delivery.

Our services: AI-native software development, AI consulting, greenfield projects, app modernization, team extension, design, discovery, and business process consulting.

Domain expertise: Finance, telecom, government, construction, pharma, and IT. 

  • Min project size
    $50,000+
  • Hourly rate
    $50 - $99 / hr
  • Employees
    50 - 249
  • Locations
    Zagreb, Croatia
  • Year founded
    Founded 2014
  • Languages
  • Timezones

3 Languages that we service

  • English
  • German
  • Croatian

6 Timezones that we service

CET
Central European Time (CET)
CST
Central Standard Time (CST)
EST
Eastern Standard Time (EST)
EET
Eastern European Time (EET)
GMT
Greenwich Mean Time (GMT)
UTC
Universal Coordinated Time (UTC)

2 Locations

  • Zagreb , Croatia
  • Split , Croatia

Select Focus Area
Application Platforms
Amazon Application Development Framework
30%
Azure Platform
30%
AI Agent Development Focus
AI Agent Frameworks
60%
AI Agent Platforms & Builders
40%
AI Agent Purpose Focus
General Purpose AI Agents
20%
Business Intelligence AI Agents
15%
Coding & Development AI Agents
15%
Customer Service AI Agents
15%
Workflow AI Agents
15%
Data Analysis AI Agents
10%
Productivity AI Agents
10%
AI Consulting Focus
AI Platform Integration Focus
Hubspot AI Integration
20%
Wix AI Integration
20%
Notion AI Integration
15%
Squarespace AI Integration
15%
Google Workspace AI Integration
10%
Gumloop AI Integration
10%
Salesforce AI Integration
10%
AI Technologies & Models
Open AI GPT-3
40%
Anthropic
20%
Cohere
15%
Deepmind Gopher
10%
Hugging Face Bloom
10%
Open AI Dall-E 2
5%
Frameworks and CMS
Spring MVC
50%
.NET
10%
Programming & Scripting
Java
30%
Go
10%
Industries
Information technology
20%
Financial services
15%
Telecommunications
15%
Government
10%
Medical
10%
Supply Chain, Logistics, and Transport
10%
Business services
5%
Energy & natural resources
5%
Other industries
5%
eCommerce
5%
Clients
Midmarket ($10M - $1B)
50%
Enterprise (>$1B)
40%
Small Business (<$10M)
10%
Certified in:
Custom Software Development

Pricing Snapshot

Min. project size $50,000+
Avg. hourly rate $50 - $99 /hr
Rating for cost 4.6 /5

What Clients Have Said

Notch offers competitive pricing aligned with client budgets, emphasizing value for cost. Clients appreciate their adaptability and commitment, with multiple projects involving teams of 2-10 members. Specific project costs weren't detailed, but overall satisfaction indicates strong ROI and effective project management.

This summary is based on verified Clutch reviews.

Most Common Project Size

$200,000 - $999,999 based on 13 reviews
< $49,999 $50,000 - $199,999 $200,000 - $999,999 > $1,000,000

Select a service to see pricing information

Notch Review Insights

Overall Review Rating

4.9
  • Quality 4.9
  • Schedule 4.9
  • Cost 4.6
  • Willing to Refer 4.9

Top Mentions

Review Highlights

  • Flexibility and Adaptability

    Notch is praised for their ability to adapt to evolving client requirements and incorporate feedback, demonstrating flexibility in project execution and solution delivery.

  • High Client Satisfaction

    Clients are impressed with Notch's dedication, technical skills, and ability to integrate with client teams. Their work often exceeds expectations, leading to high levels of satisfaction and repeat collaborations.

  • Proficiency in AI and SaaS Solutions

    Notch demonstrates strong expertise in AI-driven solutions and SaaS product development, effectively improving operational efficiency and user experience for their clients.

  • Effective Communication and Collaboration

    Notch excels in maintaining open and effective communication channels, ensuring that clients are informed and involved in the project process. Their collaborative approach is highly valued.

  • Seamless Team Integration

    Notch integrates seamlessly with client teams, often becoming an indispensable part of the development process. This integration enhances collaboration and project success.

Notch Reviews

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Services
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Industry
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Custom Software Development for Production Content Mgmt Co

  • Custom Software Development Enterprise App Modernization IT Staff Augmentation
  • Azure Platform Java
  • $200,000 to $999,999
  • Jan. 2024 - July 2025
5.0
Quality
5.0
Schedule
5.0
Cost
4.0
Willing to Refer
5.0

"The advice from the Notch team was key to this success."

Sep 18, 2025
Tech Commerce Solutions Managing Director, 1Worldsync
Dan Parris
Verified
  • Information technology
  • Chicago, Illinois
  • 201-500 Employees
  • Online Review
  • Verified

Notch provided software development services for a product content management company. The team helped the client modernize their research tools, move systems from Google to Azure, and add new functionality.

Custom Web Dev for HR-Focused Technology Startup

  • Custom Software Development IT Staff Augmentation Web Development
  • Other app platform
  • $200,000 to $999,999
  • Apr. 2021 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

“They always want to build technology that solves our customers' needs.”

Sep 19, 2022
Head of Delivery, HR-Focused Technology Startup
Anonymous
Verified
  • Other industries
  • Ireland
  • 51-200 Employees
  • Phone Interview
  • Verified

Agency04 collaborates with the internal development team of a technology startup, continuously developing web apps and features related to an HR SaaS tool. Additionally, they provide ongoing customer support.

Digital Goods Marketplace Dev for Sports Company

  • Mobile App Development
  • Mobile Game Development
  • $200,000 to $999,999
  • Oct. 2020 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Every person involved is very dedicated to the product they are building for us."

 
Apr 1, 2021
COO, The Football Company
Anonymous
Verified
  • Other industries
  • Munich, Germany
  • 1-10 Employees
  • Online Review
  • Verified

Agency04 is the chosen developer of a digital goods marketplace for a sports company. The team handles the backend and native mobile applications frontend of the product. They utilize Java, ReactJS, and more.

Web App Dev for Full-Service Digital Agency

  • Web Development
  • $200,000 to $999,999
  • Nov. 2020 - June 2021
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"The motivation of each team member to achieve the best possible result is amazing."

Mar 29, 2021
Senior Principal Project Manager, Merkle DACH
Stefan Herder
Verified
  • Other industries
  • Germany
  • 1,001-5,000 Employees
  • Online Review
  • Verified

Agency04 was hired by a full-service digital agency to develop an app for their customer. They were tasked to create a progressive web app that representatives can use during customer meetings.

Custom Software Dev for Institution-Focused IT Provider

  • Custom Software Development
  • $200,000 to $999,999
  • Jan. 2018 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
4.5
Willing to Refer
5.0

"They not only do what is expected of them but also think ahead, ask difficult questions..."

Jul 19, 2020
Head of Information Systems Department, IT Provider
Anonymous
Verified
  • Other industries
  • Zagreb, Croatia
  • 51-200 Employees
  • Online Review
  • Verified

AGENCY04 buttressed the development team of a Croatian IT provider. Focusing on module deployment, they helped create a national research information system that's interconnected with various databases. 

Conference App for Startup

  • Mobile App Development
  • $200,000 to $999,999
  • Jan. 2019 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"(We) can’t imagine a better partner in developing such a complex and powerful product."

Jun 10, 2020
VP Growth, Connected Devices
Matej Zelić
Verified
  • Other industries
  • Zagreb, Croatia
  • 1-10 Employees
  • Online Review
  • Verified

A growth startup hired AGENCY04 to assist with developing a conference mobile app for iOS and Android. It needed to match users based on mutual interest and allow organizers to act on realtime congestion data.

Software Dev for Electrical Engineering Company

  • Custom Software Development
  • Other app platform
  • $200,000 to $999,999
  • Nov. 2017 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

“They’re eager to learn from us and solve our issues creatively.”

Jan 9, 2019
Head of Custom Software Development, Končar
Tonci Kalina
Verified
  • Manufacturing
  • Zagreb, Croatia
  • 51-200 Employees
  • Phone Interview
  • Verified

AG04 was hired to develop two software programs from scratch.

API Development for Observability Company

  • API Development Custom Software Development UX/UI Design
  • REST API
  • $200,000 to $999,999
  • Jan. 2022 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They always deliver on time."

Jul 5, 2024
CEO, StackState
Andreas Prins
Verified
  • Information technology
  • Hilversum, Netherlands
  • 11-50 Employees
  • Online Review
  • Verified

Notch has been hired by an observability company to assist in developing their platform. The team's tasks have included contributing to UI building, frontend development, and integrations.

Custom Web Solution for Global Construction Tech Group

  • Web Design
  • $200,000 to $999,999
  • Oct. 2018 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"All challenges our projects faced were solved together quickly!"

Mar 26, 2021
Product Owner, Global Construction Tech Group
Anonymous
Verified
  • Other industries
  • Vienna, Austria
  • 10,001+ Employees
  • Online Review
  • Verified

Agency 04 developed a custom web solution in Java and Angular for a global construction tech group. The team created an application that aggregates and visualizes data in real-time from different ERP systems.

Showing 1-9 of 9 Reviews

Our Story

We are a team of over 170 experts based in Central Europe, united by a passion for solving complex business challenges and creating robust AI-first digital products. Here, engineers, designers, analysts, and consultants thrive together, forming strong client relationships and truly living Notch’s values every day—from courage and collaboration to human respect. That’s how we delivered over 300 projects to clients worldwide and earned recognition as a top global software and AI strategy company.

Premier Verified means Clutch independently confirmed Notch is a legally registered business,
financially sound (Creditsafe: Very Low Risk), and backed by 19 verified client reviews averaging 4.9 stars.

Learn More
Verified Client Reviews
19
Overall Review Rating
4.9
Source
Clutch
Last Updated
June 15, 2026

Business Entity

Business Entity Name AG04 Innovative Solutions d.o.o.
Source Republika Hrvatska Sudski Registar
Jurisdiction of Formation Croatia
Date of Formation October 2, 2014
Status Active
Last Updated July 21, 2022
ID 080934686

Credit Report Results

International Credit Risk Assessment Very Low Risk
Source Creditsafe
Last Updated January 1, 2022
Learn More About The Clutch Verification Process

Locations (2)

Ul. Republike Austrije 33 ZagrebCroatia 10000

101 - 150

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