Top Internet of Things Companies in Cardiff

Ratings Updated: June 4, 2026

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0 Leaders 3 Contenders

3 Companies

Country: Wales

City: Cardiff

List of the Top Cardiff IoT Developers

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Yalantis

4.8 79 reviews
Premier Verified

$50,000+

$50 - $99 / hr

250 - 999

Serves Cardiff, Wales

Services provided

60% IoT Development

10% AI Development

10% BI & Big Data Consulting & SI +2 services

10% Custom Software Development

10% Product Design

Yalantis is an Internet of Things Development company specializing in IoT App Development and custom healthcare software solutions. Praised for their seamless integration and strong team continuity, 100% of reviewers commend their reliable and timely delivery, particularly highlighting their IoT integrations for telehealth. Clients appreciate their flexibility and transparency, enhancing project success and collaboration.

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Reviews mention Well-executed projects
Clients express high satisfaction with Yalantis, particularly praising their ability to deliver well-executed projects on time and within budget. One client noted that Yalantis completed the alpha version of their product in just 10 weeks, outperforming competitors who estimated 3–4 months. The team's consistent adherence to deadlines and flexibility in adapting to changing requirements were also highlighted. Overall, Yalantis is recognized for their exceptional project management and quality-to-price ratio, making them a reliable partner for ongoing development.

Flutter-Based Mobile App Design & Dev for Nonprofit

5.0 Nov 22, 2023

Moreover, we’ve noticed a significant decrease in bugs and problems — the code is truly well done, and the Yalantis team has been thorough. Once we’ve nailed down what we’re truly trying to solve, they’ve executed well. Yalantis’ biggest strength is their ability to take information from us — a non-technical organization — and translate it into tasks. On top of that, their complete execution and quality of work are phenomenal.
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2 of 2 reviews are 5 stars

Unknown avg. project cost

Reviewed 2 times in the past 6 months
Recent reviews for Yalantis reflect a strong overall sentiment, highlighting their collaborative approach and effective project management. Clients praised their ability to meet deadlines and provide essential engineering support, with one noting, "Yalantis is very easy to work with, collaborative, and communicative." Another client emphasized their proactive efforts, stating, "Yalantis always looked to go above and beyond." There were no significant areas for improvement mentioned, indicating high client satisfaction.
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Average Project Cost Breakdown

$50,000 to $199,999 (27) $200,000 to $999,999 (15) $10,000 to $49,000 (13) $1,000,000 to $9,999,999 (2)

What Clients Have Said
Client feedback regarding Yalantis highlights a consistent sentiment of good value for money. Many clients noted that Yalantis' pricing matched their budgets while delivering high-quality results. For instance, one client emphasized their excellent quality-to-price ratio, stating, 'Their pricing is excellent, and we haven’t had to sacrifice the quality of the output for the price.' Overall, clients feel they receive strong expertise and effective communication, contributing to a positive perception of value despite some noting higher costs compared to local options.
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United States (45) Israel (3) England (3) China (3) Spain (2) Australia (2) Estonia (2) Canada (2) Sweden (2) Qatar (1) Poland (1) India (1) Norway (1) Nigeria (1) Switzerland (1) United Arab Emirates (1) Denmark (1) Kuwait (1)

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Cogniteq

4.9 44 reviews
Premier Verified

$10,000+

$50 - $99 / hr

50 - 249

Serves Cardiff, Wales

Services provided

10% IoT Development

75% Mobile App Development

10% Web Development +1 service

5% Custom Software Development

Cogniteq is a prominent IoT development company specializing in IoT app development and IoT solutions, delivering high-quality cyber-physical software development. The reviews reveal a 100% positive feedback rate, highlighting their exceptional communication, timely delivery, and expert IoT consulting. Clients commend their ability to integrate seamlessly with internal teams and appreciate their flexible team scaling and IoT infrastructure expertise.

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2 of 2 reviews are 5 stars

$50,000 – $199,999 avg. project cost

Reviewed 2 times in the past 6 months
Recent reviews of Cogniteq highlight a strong overall sentiment, with clients praising their professionalism, effective communication, and timely project delivery. For instance, the Head of Operations at Lindcom noted the team's proactive engagement and swift responses to challenges. Similarly, the CMO of Zipp Labs emphasized Cogniteq's flexibility and solution-oriented approach, contributing to successful project outcomes. Both clients expressed satisfaction with the value provided relative to cost, indicating a solid partnership for ongoing development.
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3 of 3 IoT Development reviews are 5 stars

$10,000 – $49,000 avg. project cost

IoT Development PROJECT HIGHLIGHT

Mobile App Dev for Control Systems Manufacturer
5.0 — Cogniteq developed an Android app for a control systems manufacturer. After learning the goals, they helped validate the client's IoT solution with a proof-of-concept app. Read more
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Average Project Cost Breakdown

$10,000 to $49,000 (7) $50,000 to $199,999 (5) $200,000 to $999,999 (4) Less than $10,000 (1)

What Clients Have Said
The reviews indicate a strong overall sentiment regarding Cogniteq's cost and value for money. Multiple clients noted that Cogniteq offers 'good value for cost' and that their pricing fits within project budgets. For instance, one client remarked on their 'great price-to-quality ratio,' while another highlighted their 'flexibility and responsiveness' as key advantages. Overall, clients express high satisfaction with the balance of quality and affordability found in their services.
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Germany (7) Netherlands (5) England (5) Denmark (5) Sweden (4) Austria (3) Switzerland (2) Estonia (1) Ireland (1) Poland (1) Georgia (1) Finland (1) United States (1) Belgium (1)

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Cloudavian

Not yet reviewed

$1,000+

$50 - $99 / hr

2 - 9

Cardiff, Wales

Services provided

25% IoT Development

50% Cloud Consulting & SI

25% BI & Big Data Consulting & SI

Cloudavian, a cloud consulting & SI company, is headquartered in Cardiff, Wales. Founded in 2018, the team offers cloud consulting & SI and BI & big data consulting & SI.
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Wales Interactive Services

Not yet reviewed

Undisclosed

Undisclosed

2 - 9

Pencoed, Wales

Services provided

50% IoT Development

50% AR/VR Development

Wales Interactive Services, a small AR/VR development and IoT development company, is located in Pencoed, Wales. The team specializes in AR/VR development and IoT development.
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Adex International

Not yet reviewed

$1,000+

$25 - $49 / hr

10 - 49

Bynea, Wales

Services provided

20% IoT Development

30% Cloud Consulting & SI

20% Custom Software Development +2 services

20% IT Strategy Consulting

10% Business Consulting

Adex International is a cloud consulting & SI company. In Lalitpur, Nepal and Bynea, Wales, the firm was established in 2018. Their services include cloud consulting & SI and IT strategy consulting.
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Bynea, Wales

21 Heol-Y-bwlch
Bynea, Wales SA14 9ST
6 - 9

+44 7414 579579

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Ability to Deliver considers three criteria:

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List of the Top Cardiff IoT Developers

Cloudavian

$1,000+

$50 - $99 / hr

2 - 9

Cardiff, Wales

Ability to deliver

6/40.0

0/20 Reviews

1.4/10 Clients & Experience

4.6/10 Market Presence

Service focus

25% IoT Development

75% Other

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Wales Interactive Services

Undisclosed

Undisclosed

2 - 9

Pencoed, Wales

Ability to deliver

0/40.0

0/20 Reviews

0/10 Clients & Experience

0/10 Market Presence

Service focus

50% IoT Development

50% Other

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Adex International

$1,000+

$25 - $49 / hr

10 - 49

Bynea, Wales

Ability to deliver

4.9/40.0

0/20 Reviews

0/10 Clients & Experience

4.9/10 Market Presence

Service focus

20% IoT Development

80% Other

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Top Internet of Things Companies in Cardiff

List of the Top Cardiff IoT Developers

Reviews mention Well-executed projects

Flutter-Based Mobile App Design & Dev for Nonprofit

Reviewed 2 times in the past 6 months

Average Project Cost Breakdown

What Clients Have Said

Reviewed 2 times in the past 6 months

Mobile App Dev for Control Systems Manufacturer

Average Project Cost Breakdown

What Clients Have Said

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List of the Top Cardiff IoT Developers

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