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Designed for engineers, by engineers

Professional engineering calculations at your fingertips.

VSTSABest brings gas pipeline, compressible flow, optical system, and inductor design calculators together in one precise, offline‑ready toolkit — built on verified industry formulas.

Run critical engineering calculations with clear units, documented variables, and reproducible history — even when you are far from a reliable network.

Who it's for

Built for real-world engineering workflows.

Whether you design pipelines, model compressible flows, optimize optical systems, or tune inductors, VSTSABest keeps critical formulas one tap away — even when you're offline.

  • ⛽
    Petroleum & process engineers
    AGA3 / AGA8 pipeline calculations for capacity checks, debottlenecking, and on-site troubleshooting.
  • ✈️
    Aerospace & CFD specialists
    Compressible flow, Mach relations, and total properties for wind tunnels, nozzles, and high-speed test rigs.
  • 🔭
    Optical & imaging designers
    Multi-element lens stacks with effective focal length, magnification, and back focal distance at a glance.
  • 🧲
    Electrical & RF engineers
    Solenoid and toroid coils with inductance, DC resistance, and wire length for power supplies and RF inductors.
What it solves

One toolkit — less friction, fewer errors.

Stop hunting through spreadsheets, multi-tab calculators, and half-remembered formula sheets. VSTSABest consolidates the essentials so you can stay focused on engineering decisions.

Close-up of technical instruments and digital readouts on an engineering workbench
Consolidated calculation flow
Replace scattered tools with a single, consistent workspace.
Bring together validated formulas, clear units, and sample data in one well-organized interface that works just as well in the lab as it does in the field.
Instant sanity checks Real-time validation flags inconsistent or out-of-range inputs.
Traceable results Calculation history and favorites keep your work auditable.
One-time purchase No cloud dependency Field ready Unit aware
Key calculators

Four specialist toolsets, one consistent experience.

From natural gas transmission to telescope design, VSTSABest gives you fast, reliable answers built on industry-standard methods and well-documented assumptions.

  • ⛽
    Gas Pipeline Calculator (AGA3 & AGA8)
    Compute natural gas flow rate, velocity, and Reynolds number with standard AGA methods for pipeline design, capacity evaluation, and on-site checks.
  • ✈️
    Compressible Flow Calculator
    Analyze Mach number, total temperature, total pressure, and speed of sound for high-speed ducts, nozzles, and test sections.
  • 🔭
    Optical System Designer
    Build multi-element systems and instantly see effective focal length, magnification, and system length for camera lenses, telescopes, microscopes, and more.
  • 🧲
    Inductor Designer
    Size solenoid and toroid coils with accurate inductance, DC resistance, and wire length for power electronics, RF, and magnetics.
Technical workstation with engineering software and instruments
How it works

From input to documented result in minutes.

VSTSABest is designed to guide you from initial inputs to presentation-ready results with as little friction as possible — without hiding the underlying equations.

Step 1
Select a calculator and load sample data.
Quickly jump into a gas pipeline, compressible flow, optics, or inductor tool and preload realistic sample datasets to validate your setup before entering project values.
Step 2
Enter parameters with real-time input validation.
VSTSABest checks ranges, units, and dependencies as you type — catching common mistakes before they become bad data in your reports.
Step 3
Review results, variables, and formula references.
See key outputs, intermediate variables, and clearly documented equations with variable definitions so you can cross-check against standards or hand calculations.
Step 4
Save, favorite, and share for documentation.
Store runs in your calculation history, mark go-to setups as favorites, and export summaries for inclusion in reports, design reviews, and project files.
Ideal use cases

Where VSTSABest fits into your day.

Use it at your desk, in the lab, on site, or in the classroom — VSTSABest is built to keep working, even when your connection drops.

Engineers inspecting pipeline infrastructure outdoors
Field work
Remote sites & quick checks

Run conservative capacity checks, pressure drops, and feasibility calculations on oil & gas infrastructure when you have no reliable network connection.

Technical lab with aerospace and wind tunnel equipment
Laboratory
Design verification & teaching

Use clear, documented equations to support classroom demonstrations, lab experiments, and cross-checks against CFD or optical design software.

Engineer working at desk with multiple monitors showing technical diagrams
Desk & office
Fast feasibility and documentation

Answer "is this realistic?" in minutes, then export well-structured summaries to back up design decisions and project documentation.

Professional tools

Everything you need to work with confidence.

VSTSABest was built to support how engineers actually work — mixing quick back-of-the-envelope checks with traceable calculations that can withstand review.

  • ✅
    Real-time input validation
    Catch inconsistent or out-of-range data before running your calculations.
  • 📂
    Sample data & history
    Load realistic examples, save runs, and favorite key configurations for quick reuse.
  • 📘
    Formula reference
    See formulas, variable definitions, and units clearly, so every result is auditable.
  • 📤
    Export & sharing
    Export key results for inclusion in reports, reviews, and project archives.
What engineers say
"Having AGA pipeline and compressible flow in the same app has cut a lot of friction out of our day-to-day design checks."
Senior Pipeline Engineer
Gas transmission operator
"It's become my go-to tool for quick feasibility checks before I commit to more expensive CFD or optical design runs."
Aerospace Simulation Lead
Wind tunnel facility
"Students appreciate seeing the equations and variables spelled out — it bridges the gap between theory and practical numbers."
Professor of Mechanical Engineering
University teaching lab
No subscriptions · No ads

Ready when your next calculation can't wait.

Download VSTSABest once and keep it in your pocket for the moments that matter — from design reviews to long days on site.

QR code to download VSTSABest

Scan the QR code to open the download page on your device or visit the store links above.