We Build
Secure iOS
Experiences.
MARLI DOO is a team of experts crafting modern iOS applications — from privacy-focused VPN tools to intelligent device cleaners. Built to protect. Designed to perform.
VPN
Privacy-focused protection for every connection
Cleaner
Intelligent device optimization and cleanup
Experts in iOS
Application
Development.
MARLI DOO is a dedicated team of iOS developers, security engineers, and UX designers committed to building applications that genuinely improve people's digital lives. We specialize in mobile security and device performance on the iOS platform.
Founded and headquartered in Beograd, Serbia, our team combines deep technical expertise with a strong passion for elegant, functional software. Each product we ship undergoes rigorous testing to ensure reliability, security, and a seamless user experience.
Privacy First
We treat every user's data as if it were our own — with absolute respect and zero compromise.
Engineering Excellence
Every line of code is crafted with precision, performance, and long-term maintainability in mind.
User-Centered Design
Intuitive interfaces that feel natural to iOS users, requiring no learning curve.
Continuous Improvement
We ship meaningful updates driven by real user feedback and evolving security standards.
Built for iOS. Built to Last.
Two powerful applications — one focused on security, one on performance — both designed with the iOS user in mind.
VPN
Privacy-First Protection
Our VPN application delivers enterprise-grade encryption directly to your iOS device. Browse securely on public Wi-Fi, protect your identity online, and enjoy seamless, high-speed connections — all without compromising performance.
- Military-grade AES-256 encryption
- Zero-log policy — your data stays yours
- High-speed servers optimized for iOS
- Automatic kill-switch protection
- Smart Wi-Fi threat detection
Cleaner
Intelligent Device Optimization
Cleaner is a smart iOS utility that identifies and removes junk files, duplicate photos, and unnecessary cache data. Reclaim storage space and restore your device's speed with a single intelligent scan.
- Deep junk file analysis and removal
- Duplicate photo & video detection
- Smart cache management system
- Real-time storage usage insights
- Battery performance optimization
Built for Security and Performance.
Every feature is purposefully engineered to deliver a seamless, secure, and powerful experience on the iOS platform.
End-to-End Encryption
Every data transmission is protected by robust AES-256 encryption, ensuring your communications remain completely private.
Zero Data Collection
We build our apps with a strict zero-log architecture. Your browsing habits, usage patterns, and personal data are never stored or shared.
Optimized Performance
Lightweight, battery-conscious design means our apps run efficiently in the background without draining your device resources.
Native iOS Integration
Built specifically for iOS using native frameworks, our apps integrate seamlessly with the Apple ecosystem for the smoothest experience.
Automatic Updates
Security threats evolve constantly. Our apps receive regular updates to stay ahead of vulnerabilities and deliver new capabilities.
Dedicated Support
Our expert team is available to assist with any questions, ensuring users always have the help they need to stay protected.
iOS Products by MARLI DOO
SECURE. CLEAN. OPTIMIZED.
VPN and Cleaner — two powerful iOS tools designed to protect and optimize your device.
Let's Connect
With Our Team.
Whether you have questions about our iOS applications, partnership inquiries, or feedback — our team in Beograd is ready to help.
Address
Mrakovicka 42/11
Beograd (Rakovica), 180241, Serbia
info@marlidoo.com
Phone
+1 9062566534
© 2026 MARLI DOO. All rights reserved. Modern iOS Applications for a Safer Digital Life.