Voice VPN - Fast VPN. Vasilkoff Ltd in-house project

Overview

Voice VPN is a fast, private, and censorship-resistant Android VPN app developed entirely in-house by Vasilkoff Ltd. Built to work in heavily restricted internet environments — China, Iran, russia, Tajikistan, UAE, and others — it delivers secure, anonymous access with no accounts, no logs, and no setup friction.

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Our Legacy in VPN Development

Voice VPN is the successor to our earlier open-source project, Free Easy VPN, which was based on the VPN Gate volunteer network. While that approach worked in its time, OpenVPN became heavier, slower, and increasingly easy to block. Voice VPN builds on those lessons, replacing legacy tech with modern, stealth protocols for a faster, more resilient experience.

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Why We Built It

We wanted a VPN that:

• Works instantly in hostile networks.
• Avoids complex setups or root requirements.
• Gets through DPI, throttling, and national firewalls.
• Keeps privacy by design — no account, no personal data collection.

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Technical Highlights

• Modern transport protocols that mimic HTTPS/QUIC traffic, making detection difficult.
• Fallback API hosting to ensure service continuity if primary endpoints are blocked.
• Cross-platform core built in Flutter for Android (with iOS support in progress).
• Native VPN integrations using Android Services and iOS NetworkExtension for stability and background persistence.

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DPI Resistance: The Core Technology

Deep Packet Inspection (DPI) Resistance is not just a feature — it is the central pillar of Voice VPN's architecture. Standard VPNs (IPsec, OpenVPN, WireGuard) are routinely flagged, throttled, or hard-blocked in highly restricted regions like the UAE and Iran because their traffic patterns are easily identifiable. Voice VPN is engineered from the ground up to blend in with normal web traffic and evade detection at the network level.

Xray-core and XTLS

The technological foundation is built on the Project X ecosystem, which originated with the XTLS protocol to provide sophisticated, censorship-evasion network tools. Xray-core powers the entire backend, enabling support for multiple stealth-capable protocols through a single unified stack.

REALITY Protocol

A key component of the infrastructure is the REALITY protocol, which eliminates the TLS fingerprint of the proxy server entirely. Instead of advertising its identity as a VPN endpoint, the server masquerades as a connection to a popular, trusted website. This makes Voice VPN traffic virtually indistinguishable from standard HTTPS browsing — even under deep packet inspection — because, to the firewall, it is a legitimate TLS connection.

Multi-Protocol Support

Voice VPN supports a suite of protocols — VLESS, VMess, Trojan, and Shadowsocks — providing multiple pathways for data that can bypass specific blocking techniques. If one protocol is targeted, others remain viable, giving the system robustness across varying censorship regimes.

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Infrastructure & Deployment Strategy

Protocol design alone is not enough. The deployment architecture is equally critical to maintaining resistance in practice.

Cloudflare Integration

The system uses vless-cf — a VLESS implementation integrated with Cloudflare — to obscure the final destination of traffic. Routing through Cloudflare's global network makes it significantly harder for censors to block the VPN without also blocking major web infrastructure. Two distinct server configurations are maintained: one behind Cloudflare and one with custom domain configurations, specifically to address what works in the most heavily censored markets, including Iran.

Xray Reality Vision

Active backend development includes implementing xray reality vision — the next generation of the stealth protocol stack — to further enhance transparency and effectiveness of DPI-bypass mechanisms as censorship technology evolves.

Automated Node Provisioning

The infrastructure is managed via Ansible automation, which handles deployment of Xray Reality VPN nodes across the fleet. This means UUIDs and Reality keypairs can be regenerated and configurations pushed rapidly — ensuring the network can respond quickly if nodes are identified and blocked.

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Strategic Value

DPI resistance is a critical competitive advantage within Vasilkoff Ltd's technology portfolio. By solving the real-world problem of active blocking — not just theoretical privacy — Voice VPN delivers a service that remains functional where traditional solutions fail. This high-performance core is integrated into a gamified credit economy, allowing users in censored regions to access these advanced tools through engagement rather than requiring standard subscription payments.

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Key Features

• Bypasses Firewalls & Geo-blocks: Traffic is masked to look like normal browsing.
• Fast Connection: 1–2 seconds to connect.
• No Accounts, No Logs: Privacy-first architecture.
• Unlimited Access: No speed caps or data limits.
• Stealth Mode: Works in high-censorship regions.
• Simple UI: One-tap connect.

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Monetization Model

Voice VPN uses a credit-based system:

• Earn credits by watching ads (+4 credits per ad) or inviting friends.
• Buy credits directly via SMRT16-powered Dapp (100 credits = 1 USDT).
  Payments are instantly split — 15/16 of crypto revenue is shared back to users via SMRT16’s referral program in USDT if they use their own wallet.
• Credits let users skip ads; without credits, the VPN still works at full speed.

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Real-World Use Cases

• Travel in restricted countries without losing access to essential apps.
• Secure public Wi-Fi connections.
• Bypass throttling for streaming and social platforms.
• Access blocked services for remote work or education.

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Lessons Learned (For Clients)

From Voice VPN, we bring transferable expertise for your project:

• Monetization beyond app stores: Crypto payments + referral revenue sharing.
• Global resilience: Architecture that survives censorship and API blocking.
• Frictionless onboarding: Zero-account flows improve retention and adoption.
• Cross-platform efficiency: One codebase for Android & iOS with native-level speed.

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Work With Us

If your project needs secure connectivity, censorship resistance, alternative monetization, or privacy-first design, we’ve already solved those problems at scale.

Our services include:

• Full-cycle development — from concept to deployment.
• Flutter cross-platform builds with native integrations.
• Privacy and security consulting.
• Custom VPN protocol and payment system integration.

Contact us to discuss how we can bring these capabilities to your next project.

Feature Deep Dives

Fast Connection

A VPN is only useful if it connects fast. Voice VPN consistently achieves ~1–2s connection times in healthy networks, and remains quick even under load because we avoid expensive handshakes and keep the flow lightweight. There are no splash delays, no gating screens, and no “premium only” fast lane. You tap Connect and you’re online.

Under the hood, sessions are prepped to reduce round trips, and transport choices are tuned for low-latency first byte. That shows up in the real world as faster call setup and snappier messaging (e.g., Telegram/WhatsApp).

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Smart Location

Most users just want the best route right now. “Best Choice” automatically selects a path based on current health and latency, so you don’t have to scroll a country list. Prefer control? Pick a specific country for content access or regional compliance.

This hybrid model (auto when you want it, manual when you need it) lowers support friction and helps in restricted networks where conditions change hour to hour.

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Private Always

Privacy isn’t a toggle; it’s the design. Voice VPN runs with no accounts, no analytics SDKs, and no traffic logs. We don’t know who you are, and we don’t try to find out. The app avoids collecting personal data, and credits are tracked locally on the device.

This makes Voice VPN suitable for users in sensitive regions and organizations with strict privacy requirements. If we don’t store it, it can’t be leaked or sold.

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Free or Paid — Your Choice

Monetization is user-controlled. You can:

• Watch a short ad to earn credits (+4 credits instantly).
• Buy credits via in-app purchase or USDT on Polygon (through our SMRT16 DApp, fixed rate 100 credits = 1 USDT).
• Keep using the VPN at full speed either way — credits remove ads; they don’t throttle data.

No mid-session popups. No forced timers. You decide when to earn or purchase. For power users, SMRT16 on-chain referrals pay USDT to your wallet when your link is used — instantly, without custodial dashboards.

Go to product page: Voice VPN app