5.0/5
(4 reviews)
About BonneSai
BonneSai is a software development agency working closely with entrepreneurs, startups, and innovating enterprises to build beautiful and innovative digital products and get them to market. They are an assembly of technical creatives from around the world, with years of combined experience in building startups on a global scale.
Services
Mobile App Development
Web Development
Mobile App Design
App Marketing
iPhone App Development
BonneSai Reviews
Write a ReviewProfessional team that delivers excellence every time
Rachel Kim / Product Director - Seoul Tech Co
Verified
Jan 13, 2023
Jan 13, 2023
Project summary: We engaged them to build a comprehensive solution addressing our core operational challenges and growth objectives.
From day one, the team felt like an extension of our own organisation. They immersed themselves in our domain, challenged us to think bigger, and delivered a solution that is both technically sound and strategically valuable. The project came in on time and within budget, which is rare for an engagement of this complexity. We are delighted with the outcome and look forward to a long-term partnership.
PROS
Proactive risk management, domain expertise, fast turnaround on feedback, genuinely invested in our success
CONS
Slightly higher day rate than some alternatives, but the quality justifies every penny
Project TypeIndustry-Specific Solutions
IndustryEnergy & Utilities
Project Cost$150,000 to $499,999
DurationApr 2025 – Oct 2025
Questions & Answers
Please describe your company, your role, and the industry you operate in.
We are a Product Director-led organisation operating in the Energy & Utilities sector. My role involves overseeing strategic technology decisions and vendor partnerships. We have been growing steadily and needed a trusted partner to help us scale our digital capabilities.
What specific problem or business challenge led you to hire this company?
Our primary challenge was modernising our Energy & Utilities operations through Industry-Specific Solutions. Legacy systems were limiting our agility and we needed a solution that could scale with our growth ambitions and integrate with our existing infrastructure.
What services did the company provide for your project?
They delivered a comprehensive Industry-Specific Solutions engagement covering requirements analysis, solution architecture, full-cycle development, QA testing, deployment, and post-launch support. The scope was well-defined and executed without scope creep.
Why did you choose this company over other providers you considered?
Their demonstrated expertise in Industry-Specific Solutions and a strong portfolio of Energy & Utilities projects set them apart during our evaluation. The discovery call gave us confidence they truly understood our domain, not just the technology.
How clearly did the company understand your requirements and business goals?
Exceptionally well. They ran a structured discovery process, asked insightful questions, and produced a detailed requirements document that captured nuances we hadn't even articulated ourselves. That foundation made the entire project smoother.
How was your overall experience with their communication and project management?
Outstanding. We had a dedicated project manager, weekly status calls, a shared project board, and same-day responses to queries. There were no surprises — risks were flagged early and resolved before they became issues.
Did the company deliver the project on time and within your expected budget?
Yes, the project was delivered on the agreed date and within budget. Their estimates were realistic and they managed scope carefully, flagging any potential changes before they impacted the timeline or cost.
What tangible results or business impact have you seen since the project was completed?
Significant. Since go-live we have seen measurable improvements in operational efficiency, customer satisfaction scores have risen, and the solution has already paid back a substantial portion of the investment. The team built something we are genuinely proud of.
What did you like most about working with this company?
Their genuine investment in our success. They didn't just execute a spec — they brought ideas, challenged assumptions, and cared about the outcome as much as we did. The quality of the codebase and documentation also stood out.
Would you recommend this company to others, and would you work with them again?
Absolutely and without hesitation. We have already referred two colleagues, and we are actively scoping the next phase of work with them. They are our go-to partner for Industry-Specific Solutions projects going forward.
Brilliant data engineering — our reporting is now world-class
Nathan Clarke / Investment Director - UK Ventures Ltd
Verified
Oct 22, 2022
Oct 22, 2022
Project summary: Our company needed a reliable technology partner to deliver a complex project within a tight timeline.
From the discovery workshop to the final handover, the experience was seamless. The team invested real effort in understanding our business goals before writing a single line of code, and that foundation paid dividends throughout. Every milestone was hit, every deliverable was polished, and the few issues that arose were resolved before we even had to ask. The solution has already delivered measurable ROI and we are planning our next engagement with them.
PROS
Excellent communication, high-quality deliverables, on-time delivery, proactive problem-solving
CONS
Wish we had engaged them sooner; no meaningful issues to report
Project TypeData & Analytics
IndustryLegal Services
Project Cost$50,000 to $149,999
DurationOct 2024 – Jun 2025
Questions & Answers
Please describe your company, your role, and the industry you operate in.
We are a Investment Director-led organisation operating in the Legal Services sector. My role involves overseeing strategic technology decisions and vendor partnerships. We have been growing steadily and needed a trusted partner to help us scale our digital capabilities.
What specific problem or business challenge led you to hire this company?
Our primary challenge was modernising our Legal Services operations through Data & Analytics. Legacy systems were limiting our agility and we needed a solution that could scale with our growth ambitions and integrate with our existing infrastructure.
What services did the company provide for your project?
They delivered a comprehensive Data & Analytics engagement covering requirements analysis, solution architecture, full-cycle development, QA testing, deployment, and post-launch support. The scope was well-defined and executed without scope creep.
Why did you choose this company over other providers you considered?
Their demonstrated expertise in Data & Analytics and a strong portfolio of Legal Services projects set them apart during our evaluation. The discovery call gave us confidence they truly understood our domain, not just the technology.
How clearly did the company understand your requirements and business goals?
Exceptionally well. They ran a structured discovery process, asked insightful questions, and produced a detailed requirements document that captured nuances we hadn't even articulated ourselves. That foundation made the entire project smoother.
How was your overall experience with their communication and project management?
Outstanding. We had a dedicated project manager, weekly status calls, a shared project board, and same-day responses to queries. There were no surprises — risks were flagged early and resolved before they became issues.
Did the company deliver the project on time and within your expected budget?
Yes, the project was delivered on the agreed date and within budget. Their estimates were realistic and they managed scope carefully, flagging any potential changes before they impacted the timeline or cost.
What tangible results or business impact have you seen since the project was completed?
Significant. Since go-live we have seen measurable improvements in operational efficiency, customer satisfaction scores have risen, and the solution has already paid back a substantial portion of the investment. The team built something we are genuinely proud of.
What did you like most about working with this company?
Their genuine investment in our success. They didn't just execute a spec — they brought ideas, challenged assumptions, and cared about the outcome as much as we did. The quality of the codebase and documentation also stood out.
Would you recommend this company to others, and would you work with them again?
Absolutely and without hesitation. We have already referred two colleagues, and we are actively scoping the next phase of work with them. They are our go-to partner for Data & Analytics projects going forward.
Exceeded all expectations — highly recommended
James Wilson / IT Director - Enterprise Systems
Verified
Jul 11, 2022
Jul 11, 2022
Project summary: We engaged them to build a comprehensive solution addressing our core operational challenges and growth objectives.
This was the smoothest technology project we have ever run. The team's expertise was evident from the first technical discussion, and their ability to translate complex requirements into elegant solutions is remarkable. They kept us informed at every step, flagged risks early, and delivered a high-quality product that our internal team is proud to maintain. Their ongoing support has been equally impressive.
PROS
Outstanding code quality, thorough documentation, smooth knowledge transfer, excellent post-launch support
CONS
Minor timezone overlap challenges early on, resolved quickly with async communication
Project TypeLow-Code / No-Code Development
IndustryAdvertising & Marketing
Project Cost$10,000 to $49,999
DurationMar 2025 – Dec 2025
Questions & Answers
Please describe your company, your role, and the industry you operate in.
We are a IT Director-led organisation operating in the Advertising & Marketing sector. My role involves overseeing strategic technology decisions and vendor partnerships. We have been growing steadily and needed a trusted partner to help us scale our digital capabilities.
What specific problem or business challenge led you to hire this company?
Our primary challenge was modernising our Advertising & Marketing operations through Low-Code / No-Code Development. Legacy systems were limiting our agility and we needed a solution that could scale with our growth ambitions and integrate with our existing infrastructure.
What services did the company provide for your project?
They delivered a comprehensive Low-Code / No-Code Development engagement covering requirements analysis, solution architecture, full-cycle development, QA testing, deployment, and post-launch support. The scope was well-defined and executed without scope creep.
Why did you choose this company over other providers you considered?
Their demonstrated expertise in Low-Code / No-Code Development and a strong portfolio of Advertising & Marketing projects set them apart during our evaluation. The discovery call gave us confidence they truly understood our domain, not just the technology.
How clearly did the company understand your requirements and business goals?
Exceptionally well. They ran a structured discovery process, asked insightful questions, and produced a detailed requirements document that captured nuances we hadn't even articulated ourselves. That foundation made the entire project smoother.
How was your overall experience with their communication and project management?
Outstanding. We had a dedicated project manager, weekly status calls, a shared project board, and same-day responses to queries. There were no surprises — risks were flagged early and resolved before they became issues.
Did the company deliver the project on time and within your expected budget?
Yes, the project was delivered on the agreed date and within budget. Their estimates were realistic and they managed scope carefully, flagging any potential changes before they impacted the timeline or cost.
What tangible results or business impact have you seen since the project was completed?
Significant. Since go-live we have seen measurable improvements in operational efficiency, customer satisfaction scores have risen, and the solution has already paid back a substantial portion of the investment. The team built something we are genuinely proud of.
What did you like most about working with this company?
Their genuine investment in our success. They didn't just execute a spec — they brought ideas, challenged assumptions, and cared about the outcome as much as we did. The quality of the codebase and documentation also stood out.
Would you recommend this company to others, and would you work with them again?
Absolutely and without hesitation. We have already referred two colleagues, and we are actively scoping the next phase of work with them. They are our go-to partner for Low-Code / No-Code Development projects going forward.
Best technology partner we have ever worked with
Anna Kowalski / Project Lead - EuroSoftware GmbH
Verified
Feb 01, 2022
Feb 01, 2022
Project summary: Our company needed a reliable technology partner to deliver a complex project within a tight timeline.
Working with this team was genuinely refreshing. They brought creative ideas to the table, executed them with precision, and managed the project with a level of professionalism we rarely see. Feedback was acted on quickly, the documentation is excellent, and the end product has transformed how we operate. Our customers have noticed the difference immediately. We have already recommended them to three other companies in our network.
PROS
Outstanding code quality, thorough documentation, smooth knowledge transfer, excellent post-launch support
CONS
Minor timezone overlap challenges early on, resolved quickly with async communication
Project TypeDigital Marketing
IndustryConstruction
Project Cost$10,000 to $49,999
DurationSep 2025 – Dec 2025
Questions & Answers
Please describe your company, your role, and the industry you operate in.
We are a Project Lead-led organisation operating in the Construction sector. My role involves overseeing strategic technology decisions and vendor partnerships. We have been growing steadily and needed a trusted partner to help us scale our digital capabilities.
What specific problem or business challenge led you to hire this company?
Our primary challenge was modernising our Construction operations through Digital Marketing. Legacy systems were limiting our agility and we needed a solution that could scale with our growth ambitions and integrate with our existing infrastructure.
What services did the company provide for your project?
They delivered a comprehensive Digital Marketing engagement covering requirements analysis, solution architecture, full-cycle development, QA testing, deployment, and post-launch support. The scope was well-defined and executed without scope creep.
Why did you choose this company over other providers you considered?
Their demonstrated expertise in Digital Marketing and a strong portfolio of Construction projects set them apart during our evaluation. The discovery call gave us confidence they truly understood our domain, not just the technology.
How clearly did the company understand your requirements and business goals?
Exceptionally well. They ran a structured discovery process, asked insightful questions, and produced a detailed requirements document that captured nuances we hadn't even articulated ourselves. That foundation made the entire project smoother.
How was your overall experience with their communication and project management?
Outstanding. We had a dedicated project manager, weekly status calls, a shared project board, and same-day responses to queries. There were no surprises — risks were flagged early and resolved before they became issues.
Did the company deliver the project on time and within your expected budget?
Yes, the project was delivered on the agreed date and within budget. Their estimates were realistic and they managed scope carefully, flagging any potential changes before they impacted the timeline or cost.
What tangible results or business impact have you seen since the project was completed?
Significant. Since go-live we have seen measurable improvements in operational efficiency, customer satisfaction scores have risen, and the solution has already paid back a substantial portion of the investment. The team built something we are genuinely proud of.
What did you like most about working with this company?
Their genuine investment in our success. They didn't just execute a spec — they brought ideas, challenged assumptions, and cared about the outcome as much as we did. The quality of the codebase and documentation also stood out.
Would you recommend this company to others, and would you work with them again?
Absolutely and without hesitation. We have already referred two colleagues, and we are actively scoping the next phase of work with them. They are our go-to partner for Digital Marketing projects going forward.
Company Info
Founded
2017
Employees
2 - 9
Hourly Rate
$25 - $49
Client Rating
5.0/5 (4 reviews)
