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Blockchain / EVM / AI

Rumble Fish is a Blockchain Development House specializing in Blockchain, AWS Cloud Applications, and AI.

You bring the product vision. We bring product-building expertise.

We follow industry standards and battle-tested practices to deliver value. Over the years, we’ve developed custom processes that help us become a reliable technology partner to our clients.

 

  • End-to-end solution development

We take care of the entire development process, from ideation to execution and maintenance.

  • Min project size
    $25,000+
  • Hourly rate
    $50 - $99 / hr
  • Employees
    10 - 49
  • Locations
    Kraków, Poland
  • Year founded
    Founded 2017

1 Locations

  • Kraków , Poland

Select Focus Area
Application Platforms
Amazon Application Development Framework
20%
Azure Platform
20%
Linux server
20%
Heroku
10%
Other app platform
10%
AWS Consulting Services
AWS DevOps
45%
AWS Development
20%
AWS Managed Cloud
15%
AWS Applications
10%
AWS Security
10%
Frameworks and CMS
Other frameworks and CMS
20%
Programming & Scripting
Python
20%
Redux
20%
C#
10%
C++
10%
SQL
10%
Industries
Information technology
30%
Business services
25%
Financial services
25%
Medical
10%
Arts, entertainment & music
5%
Energy & natural resources
5%
Clients
Small Business (<$10M)
60%
Enterprise (>$1B)
20%
Midmarket ($10M - $1B)
20%

Pricing Snapshot

Min. project size $25,000+
Avg. hourly rate $50 - $99 /hr
Rating for cost 4.6 /5

What Clients Have Said

Rumble Fish offers competitive pricing for software development, focusing on React and modern tech stacks. Clients noted fee increases and communication challenges, but praised developer expertise and project outcomes. Costs vary by project, with positive results in MVP development and platform scalability.

This summary is based on verified Clutch reviews.

Most Common Project Size

< $10,000 based on 9 reviews
< $10,000 $10,000 - $49,999 $50,000 - $199,999 > $200,000

Select a service to see pricing information

Highly Rated Similar Providers

Rumble Fish Review Insights

Overall Review Rating

4.6
  • Quality 4.8
  • Schedule 4.6
  • Cost 4.6
  • Willing to Refer 4.6

Top Mentions

Review Highlights

  • Successful MVP Development

    Rumble Fish successfully developed MVPs for various clients, enabling them to pitch to investors and test market viability. Their ability to transform ideas into tangible products was a key strength.

  • Mixed Project Management Experiences

    While some clients praised Rumble Fish for their flexible and collaborative project management style, others experienced challenges with communication, adherence to timelines, and proactive issue identification, indicating room for improvement.

  • Impressive React Native Skills

    Rumble Fish's proficiency in React Native is frequently highlighted. Clients appreciated their ability to create cross-platform solutions efficiently, saving time and resources while maintaining high quality.

  • Effective Problem Solving

    Rumble Fish demonstrated strong problem-solving capabilities, effectively addressing technical challenges across various projects. Clients appreciated the team's ability to provide practical solutions and innovative approaches.

  • Positive Client Relationships

    Rumble Fish has been recognized for building strong, collaborative relationships with clients. Their willingness to adapt and integrate into client teams is highly valued, contributing to successful project outcomes.

  • Technical Expertise Praised

    Rumble Fish is frequently commended for their technical expertise, particularly in React Native, blockchain, and custom software development. Clients note the team's ability to tackle complex technical challenges with innovative solutions and high-quality work.

Rumble Fish Reviews

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Project Cost
Industry
Location

Custom Platform Development for FinTech Company

  • API Development Custom Software Development
  • Amazon Application Development Framework
  • $50,000 to $199,999
  • Dec. 2023 - Dec. 2024
2.5
Quality
3.5
Schedule
2.5
Cost
2.5
Willing to Refer
1.5

"While the overall experience had its challenges, the contributions of these developers showed a high level of skill." 

Dec 23, 2024
CEO, FinTech Company
Anonymous
Verified
  • Financial services
  • Los Angeles, California
  • 1-10 Employees
  • Online Review
  • Verified

Rumble Fish was hired to develop a scalable platform for a fintech company. The team worked on the platform's code, front- and backend architecture, and API integration.

Quiet

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

"Rumblefish's unique strength seems to be the mentorship they give to engineers."

Feb 20, 2023
Founder, Quiet
Holmes Wilson
Verified
  • Other industries
  • Worcester, Massachusetts
  • 1-10 Employees
  • Online Review
  • Verified

Rumblefish has developed a chat app for a startup. They built a desktop messaging app using Zcash, a blockchain-based registry of usernames, and automated testing infrastructure using Jest and Chromatic.

UI/UX Design for Party Game Mobile App

  • Mobile App Development UX/UI Design
  • Less than $10,000
  • Oct. - Nov. 2020
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"We really could rely on them just from the beginning. They knew what we wanted and how to make it smoothly."

Sep 10, 2021
President, Macabre Enterprises
Sarah Mason
Verified
  • Arts, entertainment & music
  • Nashville, Tennessee
  • 1-10 Employees
  • Online Review
  • Verified

Rumble Fish Software Development was tasked with developing UI/UX designs for a party game's app. The client wanted marketing-friendly designs and a similar Victorian aesthetic for their existing card game.

Mobile Application Development for CRM Service

  • Mobile App Development
  • $10,000 to $49,999
  • Nov. 2020 - Mar. 2021
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They are a great team that knows what they are doing."

Sep 9, 2021
Software Development Lead, Thulium
Bartosz Bankowski
Verified
  • Business services
  • Krakow, Poland
  • 11-50 Employees
  • Online Review
  • Verified

A CRM service partnered with Rumble Fish Software Development in order to fix a messaging issue and choosing a suitable solution to develop the frontend and backend of their app.

Custom App Development for IT Startup

  • Custom Software Development
  • Less than $10,000
  • May 2019 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Rumble Fish Software Development helped with shaping our ideas into a specific and clear plan."

Sep 9, 2020
CEO, VerifiiD
Michael McCormick
Verified
  • Other industries
  • Liverpool, England
  • 1-10 Employees
  • Online Review
  • Verified

Rumble Fish Software Development developed an identity verification MVP for a Liverpool-based IT startup. The solution was written in ReactNative and will be available for both Android and iOS.

Full Security System for Critical Home Infrastructure

  • Cybersecurity
  • Less than $10,000
  • Jan. 2019 - Jan. 2020
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They hire specialists with a seniority -level that always brings assurance of high-quality work."

Aug 30, 2020
CEO, Anchor Leg Technology
Khalid Alaraimi
Verified
  • Other industries
  • Muscat, Oman
  • 1-10 Employees
  • Online Review
  • Verified

Rumble Fish Software Development built an IoT-based home security system that connects hardware with Raspberry Pi software. They held extensive discovery meetings before outlining the project and timeline.

Blockchain Dev for Cryptocurrency Exchange Platform.

  • Custom Software Development
  • $200,000 to $999,999
  • Dec. 2017 - June 2019
5.0
Quality
5.0
Schedule
5.0
Cost
4.5
Willing to Refer
5.0

"They were able to introduce project developers with great technical seniority."

Aug 7, 2020
CTO, The Ocean
Ari Kardasis
Verified
  • Financial services
  • Brooklyn, New York
  • 11-50 Employees
  • Online Review
  • Verified

Rumble Fish created the MVP of an Ethereum-based ERC20 token trading platform. Besides blockchain technology, the team used a PostgreSQL database, which was a major technical change.

Frontend Dev & Business Analytics for Healthcare Platform

  • Custom Software Development
  • $200,000 to $999,999
  • May 2019 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"The technical seniority of their developers is outstanding. They can manage any technical difficulty with ease."

Jul 17, 2020
COO, Space Inch
Mitchell Maddox
Verified
  • Other industries
  • Nashville, Tennessee
  • 1-10 Employees
  • Online Review
  • Verified

Rumble Fish Software Development has created a new health savings spending platform for a third-party client. While building the new solution using an updated tech stack, they've maintained the previous one.

Website & CMS Dev for Dog and Cat Hotel

  • Web Development
  • $50,000 to $199,999
  • Jan. - July 2019
4.0
Quality
5.0
Schedule
3.5
Cost
4.5
Willing to Refer
5.0

"I really like the way they thought outside the box to accommodate my requests."

Oct 30, 2019
Director of Marketing, Wag Hotels Inc
Kristen Rau
Verified
  • Other industries
  • California, United States
  • 501-1,000 Employees
  • Online Review
  • Verified

Rumble Fish Software Development re-created a website, which involved design and front-and backend programming. The site had reservation request functionality and an accompanying contact management system.

Showing 1-9 of 9 Reviews

Locations (1)

Eisenberga 11/3 KrakówPoland 31-523

41 - 49

Contact Rumble Fish

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