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ExtensionEngine

Unclaimed Mobile App Development
+18888222516 [email protected]
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About

It has been developing web and mobile software solutions for some of the world’s most powerful companies since 2000. They try to assure that their clients are informed of what is now possible and put them in a position to take complete advantage of the tools and technologies available. They are always dedicated to helping them achieve that. It is one of the best mobile app development company in Boston.

Last updated May 13, 2026

Services

Mobile App Development Web Development UI-UX Design Custom Software Development Web Design

Client Rating

5.0/5.0
3 reviews
Quality
5.0
Schedule
5.0
Cost
5.0
Communication
5.0
View All Reviews →

Client Reviews

5.0/5.0 (3 reviews)
Sign in to Review
Quality
5.0
Schedule
5.0
Cost
5.0
Communication
5.0

Professional partner that understood business context

Ethan Brooks / CTO - LedgerNest Fintech
Verified
May 15, 2026

Project summary: Our project involved replacing legacy workflows with a modern platform while keeping business continuity intact. We prioritized maintainability, adoption, and measurable impact.

This team handled a complicated integration landscape better than our previous vendors. They were practical about what should be built now versus deferred, which kept timelines realistic. Testing coverage was decent and they were transparent when defects appeared. We still maintain a short backlog of non-critical enhancements, but the platform is already delivering value.

PROS

Strong integration work with third-party systems and proactive monitoring setup

CONS

A few UI polish items spilled into post-launch, though core functionality was stable

5.0
Overall
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Communication
Project Type Industry-Specific Solutions
Industry Food & Beverage
Project Cost $150,000 to $499,999
Duration Feb 2025 – May 2025

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We are a mid-sized business in the Food & Beverage space, and I lead this function as CTO. I was responsible for evaluating vendors, aligning stakeholders, and ensuring the project delivered measurable operational gains.
What specific problem or business challenge led you to hire this company?
Our main challenge was that existing Food & Beverage workflows were fragmented and hard to scale. We needed Industry-Specific Solutions support to reduce manual effort, improve reliability, and give teams clearer visibility into day-to-day operations.
What services did the company provide for your project?
They handled discovery, technical planning, implementation, QA, deployment, and post-launch stabilization for Industry-Specific Solutions. Scope was phased sensibly, and they were clear about what should ship now versus move to a later release.
Why did you choose this company over other providers you considered?
We shortlisted a few firms, but this team stood out for their Industry-Specific Solutions experience and the way they discussed Food & Beverage constraints in practical terms. They were transparent about risks and did not overpromise on timelines.
How clearly did the company understand your requirements and business goals?
They understood our requirements well after a structured discovery phase. There were a couple of assumptions we corrected early, but once aligned, execution stayed consistent and traceable against agreed priorities.
How was your overall experience with their communication and project management?
Project management was strong: weekly checkpoints, a shared board, and clear ownership on action items. Response times were generally quick, and when blockers appeared, they surfaced them early with concrete mitigation steps.
Did the company deliver the project on time and within your expected budget?
Most milestones were delivered on time and within the approved budget. We had minor date movement on one integration-heavy stream, but it was communicated in advance and handled without major downstream impact.
What tangible results or business impact have you seen since the project was completed?
Yes. After go-live, we saw better process turnaround times, fewer support escalations, and stronger reporting accuracy. The platform is now a practical part of our daily operations rather than a side tool.
What did you like most about working with this company?
Two things stood out: they were candid about tradeoffs, and they stayed accountable through launch. We also liked that their engineers translated technical decisions into business implications our leadership team could evaluate.
Would you recommend this company to others, and would you work with them again?
Yes, especially for teams needing a dependable Industry-Specific Solutions partner in Food & Beverage. They are not the cheapest vendor, but they are organized, transparent, and focused on outcomes that hold up in production.

Overall a productive engagement with room for minor polish

Farah Khan / Managing Director - Lumen Legal Tech
Verified
May 15, 2026

Project summary: We engaged them to solve a set of operational bottlenecks that were limiting scale. The brief combined technical delivery with practical process improvements for day-to-day teams.

This team handled a complicated integration landscape better than our previous vendors. They were practical about what should be built now versus deferred, which kept timelines realistic. Testing coverage was decent and they were transparent when defects appeared. We still maintain a short backlog of non-critical enhancements, but the platform is already delivering value.

PROS

Responsive support after launch and willingness to refine workflows based on real user behavior

CONS

A few UI polish items spilled into post-launch, though core functionality was stable

5.0
Overall
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Communication
Project Type IT Consulting
Industry Insurance
Project Cost $500,000+
Duration Oct 2024 – Jan 2026

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We are a mid-sized business in the Insurance space, and I lead this function as Managing Director. I was responsible for evaluating vendors, aligning stakeholders, and ensuring the project delivered measurable operational gains.
What specific problem or business challenge led you to hire this company?
Our main challenge was that existing Insurance workflows were fragmented and hard to scale. We needed IT Consulting support to reduce manual effort, improve reliability, and give teams clearer visibility into day-to-day operations.
What services did the company provide for your project?
They handled discovery, technical planning, implementation, QA, deployment, and post-launch stabilization for IT Consulting. Scope was phased sensibly, and they were clear about what should ship now versus move to a later release.
Why did you choose this company over other providers you considered?
We shortlisted a few firms, but this team stood out for their IT Consulting experience and the way they discussed Insurance constraints in practical terms. They were transparent about risks and did not overpromise on timelines.
How clearly did the company understand your requirements and business goals?
They understood our requirements well after a structured discovery phase. There were a couple of assumptions we corrected early, but once aligned, execution stayed consistent and traceable against agreed priorities.
How was your overall experience with their communication and project management?
Project management was strong: weekly checkpoints, a shared board, and clear ownership on action items. Response times were generally quick, and when blockers appeared, they surfaced them early with concrete mitigation steps.
Did the company deliver the project on time and within your expected budget?
Most milestones were delivered on time and within the approved budget. We had minor date movement on one integration-heavy stream, but it was communicated in advance and handled without major downstream impact.
What tangible results or business impact have you seen since the project was completed?
Yes. After go-live, we saw better process turnaround times, fewer support escalations, and stronger reporting accuracy. The platform is now a practical part of our daily operations rather than a side tool.
What did you like most about working with this company?
Two things stood out: they were candid about tradeoffs, and they stayed accountable through launch. We also liked that their engineers translated technical decisions into business implications our leadership team could evaluate.
Would you recommend this company to others, and would you work with them again?
Yes, especially for teams needing a dependable IT Consulting partner in Insurance. They are not the cheapest vendor, but they are organized, transparent, and focused on outcomes that hold up in production.

A capable team that balanced speed and quality well

Avery Collins / CEO - CraftDesk SaaS
Verified
May 15, 2026

Project summary: We needed clearer production visibility across shifts and plants. The project included monitoring dashboards, alerting, and practical integrations with legacy plant software.

Good execution with realistic expectations. They did not overpromise, and that made planning much easier on our side. We had one integration issue with a third-party API rate limit that impacted timelines briefly, but they implemented retry handling and monitoring quickly. End result: reliable delivery and a solid foundation for phase two.

PROS

Strong integration work with third-party systems and proactive monitoring setup

CONS

Some change requests required formal reprioritization, which was correct but slowed quick tweaks

5.0
Overall
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Communication
Project Type IT Consulting
Industry Manufacturing
Project Cost Less than $10,000
Duration Mar 2025 – Jul 2025

Questions & Answers

Please describe your company, your role, and the industry you operate in.
We are a mid-sized business in the Manufacturing space, and I lead this function as CEO. I was responsible for evaluating vendors, aligning stakeholders, and ensuring the project delivered measurable operational gains.
What specific problem or business challenge led you to hire this company?
Our main challenge was that existing Manufacturing workflows were fragmented and hard to scale. We needed IT Consulting support to reduce manual effort, improve reliability, and give teams clearer visibility into day-to-day operations.
What services did the company provide for your project?
They handled discovery, technical planning, implementation, QA, deployment, and post-launch stabilization for IT Consulting. Scope was phased sensibly, and they were clear about what should ship now versus move to a later release.
Why did you choose this company over other providers you considered?
We shortlisted a few firms, but this team stood out for their IT Consulting experience and the way they discussed Manufacturing constraints in practical terms. They were transparent about risks and did not overpromise on timelines.
How clearly did the company understand your requirements and business goals?
They understood our requirements well after a structured discovery phase. There were a couple of assumptions we corrected early, but once aligned, execution stayed consistent and traceable against agreed priorities.
How was your overall experience with their communication and project management?
Project management was strong: weekly checkpoints, a shared board, and clear ownership on action items. Response times were generally quick, and when blockers appeared, they surfaced them early with concrete mitigation steps.
Did the company deliver the project on time and within your expected budget?
Most milestones were delivered on time and within the approved budget. We had minor date movement on one integration-heavy stream, but it was communicated in advance and handled without major downstream impact.
What tangible results or business impact have you seen since the project was completed?
Yes. After go-live, we saw better process turnaround times, fewer support escalations, and stronger reporting accuracy. The platform is now a practical part of our daily operations rather than a side tool.
What did you like most about working with this company?
Two things stood out: they were candid about tradeoffs, and they stayed accountable through launch. We also liked that their engineers translated technical decisions into business implications our leadership team could evaluate.
Would you recommend this company to others, and would you work with them again?
Yes, especially for teams needing a dependable IT Consulting partner in Manufacturing. They are not the cheapest vendor, but they are organized, transparent, and focused on outcomes that hold up in production.

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