We are the only company in our region that has been focused on native mobile applications only. Our programming roots go back to 1999, but we are present on the territory of BIH since 2011 with the remote development team of 33 developers. Our Mostar office has been established in 2015 trying to boost projects for our supporting partners based in the UK, Netherlands, Switzerland, and New York. Applications that we maintain have 100k to 10M users. Our premium partners are companies such as Panasonic, Craftsman, and Victorinox. However, the majority of our clients are mid-tier companies or startups. Developers in QSD have a chance to work on the latest technologies such as Wear and iWatch apps. Our seniors have spent years in the field of mobile development and with their help, our juniors raise up to mid-levels at an incredible pace. It is said that 6 months spent in QSD are worth 2 years spent in another company.
We are the only company in our region that has been focused on native mobile applications only. Our programming roots go back to 1999, but we are present on the territory of BIH since 2011 with the remote development team of 33 developers. Our Mostar office has been established in 2015 trying to boost projects for our supporting partners based in the UK, Netherlands, Switzerland, and New York. Applications that we maintain have 100k to 10M users. Our premium partners are companies such as Panasonic, Craftsman, and Victorinox. However, the majority of our clients are mid-tier companies or startups. Developers in QSD have a chance to work on the latest technologies such as Wear and iWatch apps. Our seniors have spent years in the field of mobile development and with their help, our juniors raise up to mid-levels at an incredible pace. It is said that 6 months spent in QSD are worth 2 years spent in another company.
AI Overview
Performance snapshot
QSD is a mobile-focused development firm with a consistently strong performance profile across 14 verified client reviews, primarily in iOS and Android app development. The vendor earns top or near-top sub-metric scores across quality, schedule, cost, and willingness to refer, with no recurring negative patterns. Clients repeatedly highlight technical depth, responsiveness, and collaborative flexibility as standout traits. Two reviews with slightly lower schedule and cost sub-ratings (4.0) represent the only measurable deviations from otherwise uniform excellence.
Performance breakdown
Technical expertise
StrongMultiple reviews reference proficiency across Java, Kotlin, Swift, Python, Ruby, PHP, and AWS integrations. One anchor review cites SDK and framework delivery across six languages with thorough testing and documentation, and another confirms a 99% crash-free rate through proactive monitoring.
Project management & delivery
StrongOn-time delivery is consistently cited across at least six independent reviews, with Agile and sprint-based workflows referenced explicitly. One engagement delivered an app to 80,000+ users on schedule, and QSD successfully rescued a legacy project from a prior vendor and brought it to MVP stage.
Communication & collaboration
StrongReviewers from Austria, the UK, Iceland, Saudi Arabia, and the US all commend QSD's communication fluency, transparency, and cross-timezone availability. Direct developer access and openness to client feedback are highlighted across multiple engagements as key differentiators.
Reliability
StrongA 99% crash-free rate is explicitly cited in one high-density review, and multiple clients note ongoing maintenance relationships spanning years without reported instability. QSD's ability to identify and resolve technical issues is highlighted in the sports broadcasting engagement.
Client satisfaction & outcomes
StrongTangible outcomes include successful App Store and Google Play launches, an app serving 80,000+ campaign users, and long-term client retention across education, petcare, and networking sectors. Willingness-to-refer scores are 5.0 in 13 of 14 verified reviews, with no client expressing dissatisfaction.
Best for
QSD is best suited for startups, SMEs, and digital agencies seeking a reliable mobile development partner for iOS and Android projects, particularly those requiring long-term maintenance, Agile delivery, and cross-timezone collaboration.
Clients info
QSD's client base spans technology, education, sports broadcasting, petcare, and arts and entertainment industries, predominantly serving small-to-mid-sized companies. Most engagements fall within the $10,000–$199,999 project range, though several long-term partnerships have reached the $200,000–$999,999 band. Client representatives are typically C-suite or technical leadership roles such as CTO, CEO, or CPO. Primary industries represented include Information Technology & Software, Education, Sports & Broadcasting, Arts, Entertainment & Music, Petcare & Consumer Apps. Typical client size bands include 1–10 Employees, 11–50 Employees, 51–200 Employees. Common project budget ranges include $10,000 to $49,999, $50,000 to $199,999, $200,000 to $999,999.
Review strength
The assessment is based on 16 reviews across 2 platforms, with 14 verified client reviews from one professional review platform and 2 brief unverified posts from a general-purpose platform. The majority of reviews were published between 2020 and 2023, with the most recent dated October 2023. Two reviews date to 2018 and 2015, which are more than five years old and carry limited weight in this analysis. Review date range: Apr. 2015 - Oct 24, 2023.
Performance breakdown
Technical expertise
StrongMultiple reviews reference proficiency across Java, Kotlin, Swift, Python, Ruby, PHP, and AWS integrations. One anchor review cites SDK and framework delivery across six languages with thorough testing and documentation, and another confirms a 99% crash-free rate through proactive monitoring.
Project management & delivery
StrongOn-time delivery is consistently cited across at least six independent reviews, with Agile and sprint-based workflows referenced explicitly. One engagement delivered an app to 80,000+ users on schedule, and QSD successfully rescued a legacy project from a prior vendor and brought it to MVP stage.
Communication & collaboration
StrongReviewers from Austria, the UK, Iceland, Saudi Arabia, and the US all commend QSD's communication fluency, transparency, and cross-timezone availability. Direct developer access and openness to client feedback are highlighted across multiple engagements as key differentiators.
Reliability
StrongA 99% crash-free rate is explicitly cited in one high-density review, and multiple clients note ongoing maintenance relationships spanning years without reported instability. QSD's ability to identify and resolve technical issues is highlighted in the sports broadcasting engagement.
Client satisfaction & outcomes
StrongTangible outcomes include successful App Store and Google Play launches, an app serving 80,000+ campaign users, and long-term client retention across education, petcare, and networking sectors. Willingness-to-refer scores are 5.0 in 13 of 14 verified reviews, with no client expressing dissatisfaction.