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Overall Review Rating

4.1 (5 Ratings)

Quality 4.4/5
Schedule 4.2/5
Cost 4.4/5
Communication 4.2/5

Overview

?They build digital expertise for the web & mobile that drive company growth & increase team productivity. With growing demand for marketing & technology resources, Calls9 provide businesses & organizations innovative digital solutions that can be started quickly and easily. If you have a digital project you require help defining, designing or developing they would love to hear from you.

founded
Founded 2011
employees
Employees 2 - 9
hourly rates
Hourly Rates N/A
our ratings
Ratings 4.1/5
contact
Contact +441133506441

Services

  • iOS App Development
  • Android App Development
  • DevOps
  • Crypto Exchange Development
  • IoT App Development
  • IT Consulting
  • AngularJS Development
  • Cross Platform Development
  • Mobile App Development
  • Game Development
  • Web Development
  • Platform Development

Industries Served

Aerospace & Defense Government & Public Sector Legal Services Pharmaceuticals & Biotechnology Retail & E-commerce

calls9 Reviews

Have a look at these client reviews on previously delivered projects.

Cameron Aldrich

Head of Digital Operations - Northstar Logistics Corp
Posted on Dec 29, 2025
4.0 Overall Rating

Went live on time and under budget. Our CFO framed the project charter.

We received proposals from six vendors. Four of them quoted us prices that bore no relationship to the actual scope. This team came back with something realistic and then delivered against it exactly. I have worked on enough technology projects to know that the gap between what is proposed and what is delivered is where trust gets destroyed. There was no gap here. What was promised is what we got, and the ongoing relationship we have built from this is something we intend to continue.

Project summary

A failed engagement the previous year had made us more rigorous about vendor selection. We took the time to find a partner we actually trusted before we committed.

Quality 4.0/5
Schedule 4.0/5
Cost 3.5/5
Communication 3.5/5
project type
Project Type ERP Development
industry
Industry Aerospace & Defense
project cost
Project Cost $10,000 to $49,999
Read Full Review

Katrin Bauer

Head of Product Management - Bayern Software KG
Posted on Jul 27, 2025
4.0 Overall Rating

User research surfaced friction points we had stopped noticing. Eye-opening.

The technical quality is the obvious thing to highlight. The automated test suite is comprehensive, the deployment pipeline is solid, and the documentation is actually useful rather than written to satisfy a checklist. But the metric I keep coming back to is what has NOT happened since go-live. No 2am incident calls. No emergency patches. No post-launch retrospectives about what went wrong. For a system of this complexity, that outcome is exactly what we paid for.

Project summary

Clinical trial data management was running on a system that had been extended well past its design intent. Quality risks in that context are not acceptable — we needed a proper rebuild.

Quality 4.5/5
Schedule 4.5/5
Cost 4.5/5
Communication 4.0/5
project type
Project Type UI/UX Design
industry
Industry Pharmaceuticals & Biotechnology
project cost
Project Cost Less than $10,000
Read Full Review

Preet Sandhu

Senior Engineering Manager - Prairie Tech Solutions Inc
Posted on Feb 08, 2025
4.5 Overall Rating

Smart sensor network that paid back the project cost in under two quarters

What I appreciated most was that they were honest when things were not going to plan. There was one point mid-project where a dependency was going to affect our timeline and they told us three weeks before it would have become critical. That gave us time to adjust. Vendors who manage upward proactively are rare. This one did it consistently throughout the engagement.

Project summary

Digital service standards required citizen-facing systems that our inherited infrastructure simply could not meet. Remediation was not viable — the only credible path was replacement.

Quality 4.5/5
Schedule 4.5/5
Cost 5.0/5
Communication 4.5/5
project type
Project Type IoT Development
industry
Industry Government & Public Sector
project cost
Project Cost Less than $10,000
Read Full Review

Adriana Voss

Director of Platform Engineering - Cascadia Digital Ventures
Posted on Jul 28, 2023
4.0 Overall Rating

A vendor that earned a place on our preferred supplier list through delivery, not sales

The part of this project I had been most worried about was the integration work. Our system landscape is complex, some of the upstream APIs were barely documented, and one of our third-party vendors was notoriously slow to respond. This team documented what the upstream vendors could not, built resilience into the architecture where third-party reliability was uncertain, and delivered integrations that have worked exactly as specified since day one. I genuinely could not have asked for more.

Project summary

Our conversion funnel showed exactly where we were losing customers. The platform was the problem and we knew it — we just needed a team experienced enough to fix it properly.

Quality 4.5/5
Schedule 4.0/5
Cost 4.5/5
Communication 4.5/5
project type
Project Type POS System Development
industry
Industry Retail & E-commerce
project cost
Project Cost $10,000 to $49,999
Read Full Review

Wei Xin Chua

Product Director - Lionhead Digital Pte Ltd
Posted on Aug 09, 2022
4.0 Overall Rating

Decentralised architecture that our compliance team could actually sign off on

Our stakeholder group was unusually broad — board sponsors, operational users, compliance leads, and an IT team with strong opinions. I have watched vendors handle that kind of environment badly. This team adjusted how they communicated depending on who they were talking to, managed expectations honestly when things shifted, and delivered something that each group considers a success. Getting everyone to agree on that outcome was not straightforward and they deserve credit for making it happen.

Project summary

A new practice area required document management workflows that did not exist in our current system. We needed them in place before the first client matter opened.

Quality 4.5/5
Schedule 4.0/5
Cost 4.5/5
Communication 4.5/5
project type
Project Type Blockchain Development
industry
Industry Legal Services
project cost
Project Cost $150,000 to $499,999
Read Full Review
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