• My Tools

React & React Native community-trusted developers!

We are leaders in React and React Native services focused on delivering cutting-edge tech to our clients. 

We work with enterprises, small and medium companies, and start-ups to help them achieve their technology and business goals. Because we're experts in React and React Native development, we deliver custom and out-of-the-box ideas even to the most complex projects. 

 

What do we offer?

React Native services:

  • Bronze Verified
  • $25,000+
  • $100 - $149 / hr
  • 10 - 49
  • Founded 2016
Average Review Rating
4.8
Total Reviews
2
Most Common Project Size
$50,000 to $199,999
Average Referral Rating
5.0 /5

Focus

No data have been added yet...

    Locations (1)

    41 - 49

    Overall Review Rating

    4.8
    • Quality

      4.8 /5
    • Schedule

      4.8 /5
    • Cost

      5.0 /5
    • Willing to Refer

      5.0 /5
    See all 2 Reviews
    All Filters
    Submit A Review

    Mobile App Migration for Fintech Company

    • Mobile App Development
    • $50,000 to $199,999
    • July - Dec. 2021
    4.5
    Quality
    4.5
    Schedule
    4.5
    Cost
    5.0
    Willing to Refer
    5.0

    "I highly recommended them to anyone who was in a similar situation."

    Apr 11, 2022

    A fintech company hired Callstack to help migrate their mobile apps to Re.Pack, document the migration process, create an in-house development platform, and conduct an upskilling workshop for their developers.

    Mobile App Development for Digital Solutions Provider

    • Mobile App Development
    • $50,000 to $199,999
    • Feb. - June 2021
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "I can confidently say that I strongly recommend Callstack for any development project related to React Native."

    Aug 22, 2021

    A digital solutions company hired Callstack in order to modernize their app by migrating it with EXPO, Typescript, GraphQL code generator, and improving the overall UI/UX. 

    Clutch verification provides an additional layer of data to help you make the right purchasing decision of business services.

    Learn More
    Verified Client Reviews
    2
    Overall Review Rating
    4.8
    Source
    Clutch
    Last Updated
    April 11, 2022
    Business Entity
    Business Entity Name Callstack.io Sp. z o. o.
    Source KRS-Pobierz
    Jurisdiction of Formation Poland
    Date of Formation March 7, 2016
    Status Active
    Last Updated November 16, 2022
    ID 0000606530
    Payment & Legal Filings
    International Credit Risk Assessment Very Low Risk
    Source Creditsafe
    Last Updated November 16, 2022

    Contact Callstack

    If you’re not seeing exactly what you need here, send this company a custom message. You can talk about your project needs, price, and timeline to get started on your project.

    Something went wrong. Please try again.