Building Apps
That Matter
We craft premium iOS applications that elevate user experience and strengthen mobile security — from VPN protection to device optimization.
Apps Built for
iOS Excellence
Each product is crafted with precision, designed to solve real problems and deliver a seamless experience on Apple devices.
QBIT VPN
Secure. Private. Fast.
Military-grade encryption for your iOS device. Browse anonymously, bypass geo-restrictions, and protect your data on any network with blazing-fast servers across 50+ countries.
- 256-bit AES Encryption
- No-Log Policy
- 50+ Server Locations
- Kill Switch
QBIT Cleaner
Clean. Optimize. Boost.
Reclaim storage and supercharge your iPhone's performance. Intelligently detects junk files, duplicate photos, and unused apps to keep your device running at peak efficiency.
- Smart Junk Detection
- Duplicate Photo Finder
- Memory Booster
- Battery Optimizer
Engineered for Excellence
Advanced Security
Our VPN uses AES-256 encryption, the same standard trusted by governments and financial institutions worldwide.
Peak Performance
QBIT Cleaner intelligently frees up storage and RAM, ensuring your iPhone runs as fast as the day you bought it.
User-First Design
Every interaction is crafted with Apple's Human Interface Guidelines in mind — intuitive, beautiful, and accessible.
A Team of
iOS Experts
Based in Novi Beograd, Serbia, QBIT DOO is a passionate team of iOS engineers, designers, and security specialists dedicated to building apps that users love and trust. We combine deep technical expertise with a relentless focus on user experience.
Loved by Users Worldwide
“QBIT VPN is hands-down the best VPN I've used on iOS. The connection is instant, the UI is gorgeous, and I never worry about my data on public Wi-Fi anymore.”
Aleksandra M.
iOS Developer, Berlin
“QBIT Cleaner freed up over 4GB on my iPhone in minutes. The duplicate photo finder alone is worth it. My phone feels brand new again.”
Marko P.
Freelance Designer, Zagreb
“The attention to detail in QBIT's apps is remarkable. You can tell these are built by people who genuinely care about the iOS platform and user experience.”
Sofia K.
Product Manager, Vienna
“As a security professional, I'm very picky about VPN apps. QBIT VPN's no-log policy and AES-256 encryption meet the highest standards. Highly recommended.”
Nikola T.
Security Consultant, Beograd
Secure & Optimize
Your iPhone Today
Join over 500,000 users who trust QBIT DOO apps to protect their privacy and keep their devices running at peak performance.
Available on the
App Store
Let's Build
Something Great
Have a project in mind or want to learn more about our products? We'd love to hear from you. Our team typically responds within 24 hours.