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Setting the new default in software development

Monterail is an agentic development company specializing in web and mobile applications for enterprise clients, ambitious startups, and scale-ups. Monterail works with recognized global brands, including Bosch, DocPlanner, EY, Merck, and SharkNinja.

Core Capabilities:

  • Custom web and mobile application development
  • AI-assisted software development services
  • Industries served: healthtech, MedTech, FemTech, fintech, proptech, retail, e-commerce
  • Team size: 130+ engineers and product experts
  • Min project size
    $10,000+
  • Hourly rate
    $25 - $49 / hr
  • Employees
    50 - 249
  • Locations
    Wrocław, Poland
  • Year founded
    Founded 2010
  • Languages
  • Timezones

2 Languages that we service

  • English
  • Polish

5 Timezones that we service

CET
Central European Time (CET)
EET
Eastern European Time (EET)
EST
Eastern Standard Time (EST)
GMT
Greenwich Mean Time (GMT)
MET
Middle East Time (MET)

1 Locations

  • Wrocław , Poland

Select Focus Area
Application Platforms
Amazon Application Development Framework
55%
Heroku
30%
Other app platform
15%
AI Consulting Focus
Programming & Scripting
Ruby
50%
Industries
Medical
25%
Financial services
20%
Retail
20%
Real estate
15%
eCommerce
15%
Other industries
5%
Clients
Midmarket ($10M - $1B)
50%
Enterprise (>$1B)
30%
Small Business (<$10M)
20%

Pricing Snapshot

Min. project size $10,000+
Avg. hourly rate $25 - $49 /hr
Rating for cost 4.4 /5

What Clients Have Said

Monterail offers competitive pricing, with project costs ranging from $30,000 to over $1,000,000 depending on scope and duration. Clients consistently find value in their services, praising quality, communication, and responsiveness, making them a solid choice for various project sizes.

This summary is based on verified Clutch reviews.

Most Common Project Size

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

Select a service to see pricing information

Monterail Review Insights

Overall Review Rating

4.8
  • Quality 4.8
  • Schedule 4.7
  • Cost 4.4
  • Willing to Refer 4.8

Top Mentions

Review Highlights

  • Proactive and Visionary Approach

    Monterail's visionary approach to projects, where they see opportunities for growth and innovation, is appreciated by clients. Their proactive stance in ensuring project success and willingness to go beyond the initial scope are highlighted as key differentiators.

  • Competitive Pricing and Value

    Monterail is often chosen for their competitive pricing and perceived value for cost. Clients feel they receive good value for the quality of work and expertise provided, despite some noting they are not the cheapest option.

  • Adaptability and Flexibility

    Monterail is recognized for their adaptability in handling changing project requirements and business goals. Their ability to quickly adjust plans and resources to meet client needs is a recurring theme in client feedback.

  • Areas for Improvement in Communication

    While generally praised for communication, some clients suggest improvements in ensuring quicker resolution of urgent tasks across time zones and maintaining clear documentation for agile development methodology.

  • Strong Client Relationships

    Monterail is noted for building strong relationships with clients, often being described as an extension of the client's team. Their proactive approach and willingness to understand and address client needs have been highlighted as key strengths, fostering trust and long-term partnerships.

  • Technical Expertise in Complex Projects

    Monterail has been praised for their deep technical expertise, particularly in handling complex projects such as developing AI-powered platforms and scalable web applications. Clients appreciate their ability to deliver tailored solutions that meet specific business needs, showcasing proficiency in technologies like Ruby on Rails, React.js, and Vue.js.

Monterail Reviews

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Industry
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Ruby on Rails Development for Crowd Funding Platform

  • Web Development
  • Other frameworks and CMS Ruby on Rails
  • $10,000 to $49,999
  • Sep. 2013 - Mar. 2015
4.5
Quality
4.5
Schedule
5.0
Cost
4.5
Willing to Refer
5.0

"They were transparent about what was best for us even though it wasn’t in their best interest."

Jan 9, 2017
Managing Director, Innovestment
Christin Friedrich
Verified
  • Financial services
  • Berlin, Germany
  • 1-10 Employees
  • Phone Interview
  • Verified

Monterail enhanced an existing Ruby on Rails crowd-funding site that has a large presence in Germany.

Website Redesigns for Online Medical Resources

  • Web Development
  • $50,000 to $199,999
  • Jan. 2015 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"I really liked their approach of convincing us through data-driven metrics."

Jan 6, 2017
Fmr. Manager CEO Office, Merck
Anonymous
Verified
  • Information technology
  • Amsterdam, Netherlands
  • 1,001-5,000 Employees
  • Phone Interview
  • Verified

The engagement involved the redesign of performance-driven website resources and includes ongoing maintenance. 

Development Partnership for B2B Software as a Service

  • Custom Software Development
  • Angular Ruby on Rails
  • $1,000,000 to $9,999,999
  • Jan. 2012 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"We decided to expand the relationship with them because they’re able to execute."

Jan 4, 2017
Co-founder, Cooleaf
John Duisberg
Verified
  • Business services
  • Atlanta, Georgia
  • 1-10 Employees
  • Phone Interview
  • Verified

An MVP deliverable for a startup turned into a lucrative development partnership requiring several Ruby on Rails and Angular specialists.

Ruby on Rails Development for Supply Chain Software

  • UX/UI Design
  • UX Strategy
  • $50,000 to $199,999
  • Jan. 2011 - Ongoing
5.0
Quality
5.0
Schedule
4.0
Cost
4.0
Willing to Refer
5.0

"They were able to put together the most credible plan for what I wanted to build."

Jan 4, 2017
Co-founder, Supply Chain Firm
Anonymous
Verified
  • Advertising & marketing
  • Chicago, Illinois
  • 11-50 Employees
  • Phone Interview
  • Verified

What began a test project to diversify the client's vendor-list turned into a several hundred thousand dollar UI/UX partnership.

Web and App Development for Toy Company

  • Custom Software Development
  • Other app platform
  • $50,000 to $199,999
  • Feb. - Sep. 2016
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They had very good project management and everything was tightly controlled."

Nov 16, 2016
CEO, MysteryVibe
Soumyadip Rakshit
Verified
  • Other industries
  • London, England
  • 11-50 Employees
  • Phone Interview
  • Verified

Monterail (formerly Untitled Kingdom) built a website and an Android app to be utilized by clients to connect to the hardware they manufacture. They provided the programming for the Android app and the implementation for the website.

iOS App Development for Yoga Availability App

  • Mobile App Development
  • Mobile Commerce Health & Wellness Mobile App Development Consumer Mobile App Development iPhone iOS App Development
  • $50,000 to $199,999
  • July 2016 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
4.0
Willing to Refer
5.0

"I feel confident that they believe in my vision."

Nov 11, 2016
CEO, Yoga Availability App
Anonymous
Verified
  • Other industries
  • London, England
  • 1-10 Employees
  • Phone Interview
  • Verified

Monterail (formerly Untitled Kingdom) was hired to do end-to-end development for an iOS application that gives customers in the UK access to yoga teachers in order to schedule and pay for sessions. 

AI Development & Consulting for Spend Management Co

  • AI Consulting AI Development Custom Software Development
  • Linux server AI Deployment Machine Learning Natural Language Processing AI Strategy AI Text Generation Python
  • Confidential
  • Jan. - May 2024
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Everything they do is extraordinarily good."

Feb 27, 2025
CTO, Simfoni
Alan Buxton
  • Information technology
  • Morristown, New Jersey
  • 201-500 Employees
  • Online Review

Monterail developed an AI proof of concept for a spend management company. The team used AWS Bedrock to create an ML Ops environment and created a PowerPoint presentation.

Prototype Development for Women's Sports Media Platform

  • Custom Software Development UX/UI Design Web Development
  • Amazon Application Development Framework
  • Confidential
  • Feb. - June 2023
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They were very responsive and timely with their work."

Feb 22, 2024
Executive, 5wins Inc
Anonymous
Verified
  • Media
  • San Rafael, California
  • 1-10 Employees
  • Online Review
  • Verified

A women's sports media company hired Monterail (formerly Untitled Kingdom) to develop and design a prototype of their platform.

Mobile App, Web Dev & Design for SaaS Company

  • Mobile App Development Web Design Web Development
  • Confidential
  • Jan. 2022 - May 2023
4.5
Quality
5.0
Schedule
4.5
Cost
4.0
Willing to Refer
5.0

"I was happy with the collaboration."

Sep 5, 2023
Executive, Sprii
Anonymous
Verified
  • eCommerce
  • Denmark
  • 11-50 Employees
  • Online Review
  • Verified

Monterail implemented a full marketplace with shows, products, and social aspects for a SaaS company. The team also developed hybrid apps and a website and created a brand identity and a design for the client.

Staff Aug & Software Dev for Cryptocurrency Trading Platform

  • Custom Software Development UX/UI Design Web Development
  • NextJS NodeJS React
  • $200,000 to $999,999
  • Dec. 2021 - June 2022
5.0
Quality
5.0
Schedule
4.5
Cost
4.0
Willing to Refer
4.5

"They were very agile and focused on delivering value where we needed it the most."

Apr 14, 2023
Department Head, Ramp Network
Anonymous
Verified
  • Financial services
  • Warsaw, Poland
  • 51-200 Employees
  • Online Review
  • Verified

Monterail augmented the product team of a cryptocurrency trading platform. They helped the client speed up their software development process and deliver value to customers quickly.

Premier Verified means Clutch independently confirmed Monterail is a legally registered business,
financially sound (Creditsafe: Low Risk), and backed by 60 verified client reviews averaging 4.8 stars.

Learn More
Verified Client Reviews
60
Overall Review Rating
4.8
Source
Clutch
Last Updated
April 20, 2026

Business Entity

Business Entity Name MONTERAIL Sp. z o. o.
Source KRS-Pobierz
Jurisdiction of Formation Poland
Date of Formation May 27, 2010
Status Active
Last Updated June 16, 2021
ID 0000357415

Credit Report Results

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

Locations (1)

Olawska 27-29 WrocławPoland 50-123

151 - 200

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