Premium Mobile & Web Development
We build products with a strong focus on User Experience, Technical Quality, and Long-term Scalability.
We care about the experience and quality of our products, through an efficient full-cycle software development process.
- 10+
- Years of experience
- 95%
- Client retention
- 8+
- Months average partnership
- 5+
- Time zones covered
A six-stage process, thorough at every step.
- 01
Discover
Strategy & architecture planning.
- 02
Design
UI/UX wireframes & prototypes.
- 03
Develop
Engineering & integrations.
- 04
Test
QA, performance & security auditing.
- 05
Launch
Deployment & go-live support.
- 06
Support
Ongoing maintenance & iterations.
“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!”
“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.”
“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.”
“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.”
“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.”
“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.”
“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.”
No-code platforms ($25–$500/mo) are fast but very limited and unscalable. Custom development ($50K–$300K) costs more but gives you native performance, full code / IP ownership, scalability from day one, and long-term maintainability. When no-code hits its limits, rebuilding costs 2–5x more than starting custom.
Native (Swift/Kotlin) offers superior performance, Premium UX, and full device access — ideal for serious apps. Cross-platform (React Native/Flutter) is 30–40% faster to build and cheaper, but has limitations. Use native for high-quality, scalable apps; cross-platform for startups or simpler projects.
Simple: $20K–$50K (2–3 months). Medium: $80K–$150K (4–7 months). Enterprise: $200K–$500K (8–18 months). Includes strategy, design, development, QA, deployment & support. Top cost killers: unclear scope, scope creep, poor QA, and bad architecture.
Technical debt = shortcuts that cost you later: skipped QA, no architecture, no documentation. A rushed MVP might save 4 months — but costs 3x to fix later. We prevent debt through thorough planning, rigorous testing, and clean code standards.
Good fit: serious scaling, quality over speed, long-term partnership (6–18 months), regulated industries. Not a fit: a simple idea in 3 weeks on $4K, looking for the cheapest option, or expecting 24/7 offshore support.
A 1-second delay reduces conversions by 7%, and a confusing flow kills sales. Premium UX includes user research, instant performance, accessibility, platform alignment, and smooth animations. The difference between a $50K and a $200K app is often UX — not features.
We have built in Health & Wellness across 7 European markets: security encryption, secure auth, GDPR/HIPAA compliance, safe integrations, and audit trails. Regulated apps cost 25–50% more — we don’t compromise on security.
Simple: 2–3 months. Medium: 4–7 months. Enterprise: 8–18 months. Timeline depends on scope clarity, third-party APIs, testing rigor, and iteration cycles. Fast now = expensive later. We don’t rush quality.
Post-launch we handle bugs, OS updates, API maintenance, user feedback, feature iterations, and security patches. We recommend retainer-based partnerships of 40–80 hrs/mo to keep your app healthy, competitive, and up to date as it scales.
Discover (strategy & architecture), Design (UI/UX wireframes & prototypes), Develop (engineering & integrations), Test (QA, performance & security), Launch (deployment & go-live support), and Support (ongoing maintenance & iterations). Every stage is thorough, not rushed.
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.