v2.2.0 · now available
The network and security toolkit built for zero compromise.
68 professional tools. Zero telemetry in the app. Zero paywalls. Everything a network engineer or security professional needs, running fully offline on your device.
Look for this icon after installing
VajraX
68
Professional tools
1,530
Passing tests
60/68
Work fully offline
4.41 MB
Total APK size
// Why VajraX
Built different.
Works everywhere.
Other network tools are feature-locked, cloud-dependent, or bloated. VajraX is the professional toolkit that respects your time and your data.
5 new engines in v2.0
600+ ports referenced
99 RFCs indexed
| Capability | 🔒 Typical Network App | ⚡ VajraX |
|---|---|---|
| Offline network tools | ⚠ Cloud-dependent | ✓ 60 of 68 work offline |
| No account required | ✗ Forced login | ✓ Zero signup |
| No telemetry | ✗ Analytics embedded | ✓ Zero tracking |
| All tools free | ✗ Pro tiers lock features | ✓ 68 tools, no paywalls |
| CCNA/CCNP depth | ⚠ Basic calculators | ✓ RFC-verified accuracy |
| Export reports | ✗ Cloud export | ✓ HTML/PDF on-device |
| Android requirement | Android 10+ | ✓ Android 8.0+ |
| Root required | ⚠ Often yes | ✓ No |
// Features
Everything you need.
Nothing you don’t.
🔌
68 Professional Tools
VLSM, IPv6, MTU, ACL, VXLAN, PMK, VLAN, Zero Trust, and more — all free, no paywalls, no accounts.
📡
Live Network Diagnostics
SSH Terminal, SNMP Browser Pro, WiFi Analyzer Pro, Network Scanner Pro, and Advanced Ping & Reachability Probe with real-time results.
📚
600+ Ports · 99 RFCs
Complete offline reference: port database with CVEs, RFC index, protocol cheat sheets, cable guides.
🛡
Security-First Design
Compliance Checker for PCI-DSS, NIST, HIPAA, ISO 27001. Zero Trust Validator against NIST SP 800-207.
🔍
Universal Search
Find any tool in milliseconds. Search by plain English: “assign IP”, “block traffic”, “ospf cost”.
📋
6-Layer Output Standard
Every tool outputs structured results across 6 layers: Summary, Technical Detail, Visual, Export, Cross-links, and Recommendations.
💾
Dual Export Engine
Export to both HTML and PDF directly on-device. Professional reports ready for clients or documentation.
// Screenshots
Precision UI.
Built for the field.
Dark-first Material Design 3. Optimized for one-handed use in the field.
VajraX v2.0
Home · 68 Tools, 5 New Engines
Fabric Architect · 9 Tools
Config Intelligence · 6 Tools
Live Network Ops · 7 Live Tools
The Architect Engine
The Automate Engine
The Command Center
Solutions
VajraX v1.0 (Legacy)
Home · Quick Launch
The Architect Engine
The Automate Engine
The Armory
The Command Center
Solutions
// All 68 Tools
68 Tools. Eleven modules.
Every tool you need.
From subnet planning to EVPN-VXLAN fabric design — organized into focused modules that match your workflow.
// v2.0 Engines — 37 New Tools
🕸
Fabric Architect
9 tools · Enterprise network fabric design
- VXLAN MTU Calculator
- TCP Window Scaling Modeler
- AWS/Azure CIDR Carver
- Route-Target & RD Planner
- EVPN-VXLAN Fabric Designer
- Spine-Leaf Underlay Designer
- BGP Path Analyzer Pro
- SD-WAN Policy Calculator
- WireGuard Config Generator
📊
Config Intelligence
6 tools · Configuration analysis & management
- Config Analyzer
- Config Template Engine
- Multi-Vendor Translator Pro
- Config Vault — AES-256-GCM encrypted
- Regex Filter Engine
- Config Diff Pro
🛡
Security Ops Center
9 tools · Security operations & analysis
- Zero Trust Architecture Planner Pro
- Firewall Policy Analyzer
- CVE Explorer Pro
- Log Parser & Analyzer
- IP Reputation & Threat Intel
- Certificate Chain Analyzer Pro
- Compliance Auditor Pro
- WPA3/WPA2 PMK Calculator
- DNSSEC Chain Validator
📶
Live Network Ops
7 live tools · Requires network connectivity
- SSH Terminal
- SNMP Browser Pro
- WiFi Analyzer Pro
- Network Scanner Pro
- Speed Test
- Wake-on-LAN Pro
- Advanced Ping & Reachability Probe
📡
Protocol Deep Dive
6 tools · Advanced protocol calculators
- Protocol Lab Pro
- RFC Browser
- Multi-Vendor Command Reference Pro
- Encoder Toolkit
- Bitsmith Sandbox
- Hex Packet Decoder
// v1.0 Foundation — 31 Tools (All Upgraded)
All 31 v1.0 tools upgraded with 6-layer output and dual HTML/PDF export in v2.0. Five original tools (Tactical Manual, Network Scanner, Ping & Reachability Probe, SSL Inspector, Config Diff) were superseded by their Pro replacements above.
🏗
The Architect Engine
14 tools · Network design & IP calculation
- VLSM Planner
- Subnet Hub
- Subnet Troubleshooter
- Network ID Architect
- Route Summarizer
- IPv6 Suite
- IP Converter
- CIDR Cheat Sheet
- Binary Heart
- Reverse VLSM
- MTU/MSS Planner
- Bandwidth Calculator
- ACL Generator
- IPv6 PD Planner
⚙
Automate
2 tools · Config generation & protocol analysis
- Universal Translator — Cisco ↔ Juniper ↔ Aruba
- Protocol Lab — OSPF · EIGRP · BGP calculator
🗃
Armory
5 tools · Reference library
- Cable Wiring Guide — T568A/B, crossover, console
- MAC OUI Lookup — vendor database
- Port Reference — 600+ ports with CVEs
- Field Options — quick reference
- Protocol Cheat Sheet — IEEE 802.x, TCP/IP
📡
Command Center
2 tools · Live network diagnostics
- DNS Lookup — A, AAAA, MX, NS, TXT, PTR
- Hash Generator — MD5, SHA-1/256/512
🏢
Solutions
8 tools · End-to-end design
- IP Camera Planner
- CCTV Storage Calculator
- PoE Budget Planner
- Fiber Power Budget
- VLAN Architect
- Compliance Checker — PCI-DSS, NIST, HIPAA
- Zero Trust Validator — NIST SP 800-207
- Redundancy Planner — HSRP/VRRP
🏠
Home
Smart hub · Search & quick access
- Universal Search — plain English queries
- Quick Launch — pinned tools
- System Health Monitor
- Professional Mode — raw bit operations
// Offline First
Works in a data center.
Works in a bunker.
60 of 68 tools are 100% offline. No cloud. No API keys. 8 tools optionally connect for live diagnostics (SSH Terminal, SNMP Browser Pro, WiFi Analyzer Pro, Network Scanner Pro, Speed Test, Wake-on-LAN Pro, Advanced Ping & Reachability Probe, DNS Lookup) — always your choice.
- ⚡Instant — zero network callsSubnet calculations, IPv6, VLSM, ACL generation — all local, all instant.
- ✈Airplane mode readyWorks on a plane, in a secure facility, or anywhere with no connectivity.
- 📦Everything bundled — 4.41 MB APK600+ ports, 99 RFCs, cable pinouts, MAC database — all inside the APK.
vajrax@offline:~ $ subnet 10.0.0.0/8 /24
Parent: 10.0.0.0/8 (Class A)
Prefix: /24 → 256 subnets
Hosts: 254 usable per subnet
vajrax@offline:~ $ vlsm 192.168.0.0/24
Dept A (50h) → /26 192.168.0.0
Dept B (25h) → /27 192.168.0.64
Dept C (10h) → /28 192.168.0.96
Efficiency: 96.1% • Waste: 3.9%
# No internet required. All local.
// Privacy by Design
Your data never leaves
your device.
No account. No ads. The app runs zero analytics — no exceptions.
✓
No personal data collected or transmitted
✓
No analytics or crash reporting in the app
✓
No account or login required
✓
All calculations run entirely on-device
✓
No root access required — ever
✓
VajraX is proprietary software. Source code is maintained in a private repository. For security audit inquiries, contact pbr65.tech@gmail.com.
// Compatibility & Install
Ready in under 60 seconds.
Device requirements
Min Android versionAndroid 8.0 (API 26)
Target SDKAndroid 15 (API 35)
APK size~4.41 MB
ArchitectureARM64 · ARM32 · x86_64
Root requiredNever
PermissionsInternet (optional)
Packagepro.netcalc.netcalcprime6
Install guide
1
Download the APK
Tap the Download button and save
vajrax.apk to your device.2
Enable unknown sources
Settings → Security → Allow installation from unknown sources (or from your browser).
3
Install and launch
Open the APK, tap Install, and launch VajraX. All 68 tools are unlocked immediately.
// Changelog
What’s new in VajraX
v2.2.0
August 2026 · Hardening Release
CURRENT
// Security
- WireGuard Config Generator: replaced the broken sub-API-33 key fallback with a Bouncy Castle lightweight X25519 primitive — previously generated independently-random, non-corresponding public/private key pairs on Android 8.0–12 (API 26–32)
// Fixes
- VLSM Deaggregator: unlocked the hardcoded /30 ceiling — /31 (RFC 3021) and /32 host routes are now reachable and exposed in the UI
- Network Scanner Pro: OUI vendor lookup now wired into the live scan pipeline
- Zero Trust Architecture Planner Pro: custom zones now flow through to the generated plan
- Compliance Auditor Pro: device-type selector is now functional
- Speed Test: jitter is now measured from real latency samples, replacing a hardcoded 0
- Privacy screen now shows the real app version instead of a hardcoded 1.0.0
// Improvements
- Consolidated the VXLAN MTU Calculator and MTU/MSS Planner into one canonical MTU tool covering VXLAN/GRE/GENEVE/IPsec/MPLS/802.1Q + WireGuard overhead
- Added pasted-list (multi-line) input support to 5 core calculators
// Dataset corrections
- IP Reputation: removed 3 entries carrying anachronistic source attribution; expanded the threat-intel seed dataset
- RFC Browser: corrected 2 entries surfaced by a full-coverage audit; expanded the curated dataset to 99 entries (from 39)
- CVE Explorer Pro: expanded the curated CVE dataset
v2.1.1
July 2026 · Patch Release
PREVIOUS
// Fixes
- Corrected IP Reputation database size disclosure (was showing an aspirational ~10,000 figure; now accurately shows the current 46 entries, with future expansion clearly marked as planned, not current)
// Technical
- APK size: ~4.41 MB
v2.1.0
July 2026 · Patch Release
PREVIOUS
// Security
- SSH Terminal now performs TOFU (trust-on-first-use) host-key verification, closing the previous MITM exposure where StrictHostKeyChecking was disabled
// Technical
- New app icon: VX monogram, replacing the previous crossed-vajra design
- APK size: ~4.41 MB
v2.0.1
July 2026 · Patch Release
PREVIOUS
// Fixes
- Route Summarizer /32 single-route bug fixed, with regression tests
- Advanced Ping & Traceroute relabeled to Advanced Ping & Reachability Probe — unprivileged Android has no real hop-discovery API, so this corrects the capability claim
// Technical
- Removed unused androidx.security:security-crypto dependency
- APK size: ~4.52 MB
- First release published by the automated CI/CD pipeline
v2.0.0
July 2026 · Major Release
PREVIOUS
// New Engines
- Fabric Architect: EVPN-VXLAN Fabric Designer, Spine-Leaf Underlay Designer, BGP Path Analyzer Pro, WireGuard Config Generator
- Config Intelligence: Config Analyzer, Config Vault (AES-256-GCM), Config Template Engine
- Security Ops Center: WPA3/WPA2 PMK Calculator, DNSSEC Chain Validator, Firewall Policy Analyzer, Certificate Chain Analyzer Pro
- Live Network Ops: SSH Terminal, SNMP Browser Pro, WiFi Analyzer Pro
- Protocol Deep Dive: Protocol Lab Pro, RFC Browser, Hex Packet Decoder, Multi-Vendor Command Reference Pro
// Upgrades
- 20 v1.0 tools upgraded with full 6-layer output standard
- 11 v1.0 tools upgraded with export and cross-linking improvements
- Dual HTML/PDF export engine across all tools
// Technical
- Signed: RSA-4096, APK Signature Scheme v2
- Target SDK 35, Min SDK 26 (Android 8.0+)
- APK size: ~4.40 MB
// Known Limitations
- VLSM Deaggregator clamps to /30
- K8s CNI Policy Generator and full SD-WAN Overlay Designer not included
v1.0.0
June 2026 · Initial Release
STABLE
// Core Engine
- VLSM Planner with fragmentation heatmap
- IPv6 Suite: EUI-64, subnetting, solicited-node multicast
- IPv6 PD Planner (RFC 3769) with site/VLAN delegation
- MTU/MSS: IPSec, GRE, VXLAN, WireGuard, PPPoE overhead
- ACL Generator for Cisco IOS, NX-OS, Juniper JunOS
- Route Summarizer with black-hole risk detection
- BGP Community Attribute Calculator
// Security & Compliance
- SSL Inspector: TLS chain, cipher grading, SAN, expiry
- Compliance Checker: PCI-DSS, NIST CSF, ISO 27001, HIPAA, CIS
- Zero Trust Validator: 8 NIST SP 800-207 ZTA principles
- Hash Generator: MD5, SHA-1, SHA-256, SHA-512 + compare
- Config Diff: LCS-based risk-scored diff engine
// Reference & QA
- Port database: 600+ ports with service, RFC, CVE links
- RFC index: 500+ entries, searchable offline
- Protocol Cheat Sheets: IEEE 802.x, TCP/IP, OSI
- All exports: PDF, JSON, CSV, Text with full inputs
- 9 logic-layer bugs fixed before release
// Roadmap
What’s coming next.
v1.0.0
June 2026
RELEASED
Foundation Release (31 tools)
v2.0.0
July 2026
RELEASED
5 new engines, 68 tools, 6-layer output, dual export
v2.1.0
July 2026
RELEASED
SSH TOFU host-key verification, new VX monogram app icon
v2.1.1
July 2026
RELEASED
Corrected IP Reputation database size disclosure (46 actual entries, not ~10,000)
v2.2.0
August 2026
CURRENT
Existing-tool hardening: WireGuard key-gen fix, VLSM /31–/32 unlock, MTU tool consolidation, multi-line paste, dataset corrections
Next
TBD
PLANNED
Windows version (C# + WinUI 3)
⚡ v2.2.0 · Signed Release APK · 4.41 MB
Get VajraX
completely free.
No account. No credit card. No trial. Install and start working.
// FAQ
Frequently asked questions.
Is VajraX really free?
Yes. All 68 tools are completely free — no paywalls, no premium tiers, no hidden costs.
Why is it free? What's the catch?
No catch. VajraX is a personal project, not a lead-gen funnel — it's fully offline, collects zero telemetry, and needs no account. If a paid tier is ever added, everything free today stays free. Verify it yourself: the signing certificate, SHA-256 hashes, and privacy policy are all published.
Does VajraX work without internet?
60 of 68 tools work 100% offline. The remaining 8 (SSH Terminal, SNMP Browser Pro, WiFi Analyzer Pro, Network Scanner Pro, Speed Test, Wake-on-LAN Pro, Advanced Ping & Reachability Probe, DNS Lookup) require network connectivity by nature.
Do I need to create an account?
No. The app requires zero signup, zero login, and collects zero personal data, telemetry, or analytics.
Is VajraX good for CCNA/CCNP exam prep?
Yes. Includes RFC-verified subnet calculators, IPv6 tools, routing protocol simulators (OSPF, EIGRP, BGP), and comprehensive port/RFC reference databases aligned with Cisco certification objectives.
Does VajraX support multi-vendor configs?
Yes. The Universal Translator generates configs for Cisco IOS/NX-OS, Juniper JunOS, Arista EOS, and Linux Netplan.
What Android version do I need?
Android 8.0+ (API 26). The APK is approximately 4.41 MB.
Does VajraX require root?
No. All tools work without root privileges.
Can I export reports?
Yes. Every tool supports on-device export to HTML and PDF via the dual export engine. Reports are generated locally — no cloud upload.
Is VajraX safe?
VajraX is signed with RSA-4096 and APK Signature Scheme v2. It contains no tracking, no ads, and requests only necessary permissions documented at vajrax.in#privacy.
// Contact
Got a bug?
Got an idea?
Every bug report and feature request gets read. The best ideas ship in the next version.