Client reviews
What clients say
Founders and product teams on working with Applefy, in their own words. Our ratings are public on our verified Upwork and Clutch profiles below.
“They jumped in immediately when we needed urgent support and were up to speed very quickly. Working on both our iOS and watchOS apps — it was a pleasure to work with the team and Denys!”
iOS · watchOS

Constantin Rosset
Co-Founder, Mellow · Berlin, Germany
“Applefy exceeded our expectations across both phases. Their design direction was modern, thoughtful, and perfectly aligned with our vision — we felt like they truly 'got' us. The team was efficient, detail-oriented, and highly communicative, delivering a polished, user-focused product we're extremely happy with.”
Branding · Website

Dijana Spajic
Gutfit · Canada
“Denys is a tremendous resource, team leader, engineer and thinking through difficult solutions. On short notice Denys assembled an expert team focusing on challenging engineering and delivering on time. I can recommend Denys without hesitation.”
iOS, iPadOS · R&D

Robert S. Stern
New York, USA
“Applefy are top-of-the-line talent. Even though our project didn't take off, I received excellent work quality, communication, and care. Denys clearly explained each step and provided detailed documents outlining methods and milestones.”
Discovery · Technical planning
Adrian S.
CoreCloud Hosting · Germany
“Applefy was there for us when we needed it the most. I won't soon forget the professionalism and dedication shown on our sizable and challenging projects across four apps and three platforms. We worked together tirelessly for many hours, days, and months to achieve the goal. Success doesn't begin to describe the results! I'm beyond happy and remain committed to our vendor-client relationship for as long as they wish.”
4 apps · iOS, iPadOS, macOS, Android
Robert G.
Founder & CEO, Native iOS & Android · Alexandria, VA, USA
“Applefy are professionals. The CTO is a friendly man with a good attitude and great communication. The project was challenging, but we recommend them for future work.”
iOS
Justin Heinz
iOS Contract · San Diego, USA
“I needed help with navigating the app store submission process, and Denys was able to jump in and help immediately. He's very knowledgeable about the submission process and all app store related items, and was able to help me in getting our app published to the store.”
iOS · App Store release
Nudga Team
Thousand Oaks, USA
“He is a great manager for his development team and is super responsive. Always answers fast and is easy to book for a call. Makes a very good quality product and is there to fix every problem without question. Thank you for the great work.”
Flutter · iOS, Android
Tarik Deljanin
Canada
Let’s talk
Book a call with our CEO

Denys Havryliak
Founder & CEO
- 10+ years in software engineering
- Master’s in cybersecurity
- Deep, current knowledge of AI tooling
You’ll talk to the person who builds. Denys works hands-on across product, architecture, and delivery — and keeps a close watch on what today’s AI tooling can genuinely do in production, not just in a demo.