Apps Like Vortex Tool Co. for iPhone and iPad
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Ranked alternatives
Showing 221–240 of 1,000 ranked alternatives.


Fluid Mechanics Calculator
loay setrak
Calculate parameters
Calculate properties using 90 specialized tools. Determine dry bulk density, specific gravity, flow rates, pressure, and head loss. Apply Bernoulli equations and Darcy Weisbach formula. Compute density, compressibility, and mean velocity.

Fluid Mechanics Calculator
loay setrak
Calculate parameters
Calculate parameters using 90 tools. Input values to determine dry bulk density, specific gravity, flow rate, head loss, pressure, and velocity. Convert units and export results. Sync data across devices.





Remote Pilot Study Buddy
Sporty's Pilot Shop
Prepare for FAA drone exams
Prepare for the FAA Knowledge Exam with guides and practice tests. Track progress with built-in quizzes. Access FAA regulations and sUAS-specific material. Simulate exam conditions with timed practice sessions.



Pipe Tools
Global Alloy Pipe & Supply, Inc.
Access specs and charts on the go
Access steel specifications including wall thickness and mass measurements in inches, millimeters, pounds, and kilograms. Convert units between feet, meters, pounds, and metric tonnes. Compare costs and view charts from ASME B36.

Machinist Pocket Pal
Wesley Pingleton
Calculate tolerances and dimensions
Provides calculators for speeds and feeds, milling, lathe, drilling, and trigonometry. Includes reference materials for machining formulas and tool performance optimization. Users can access essential engineering resources and calculations on-the-go.

Gear Simulation & Calculation
Heng Jia Liang
Simulate gears, calculate ratios, track speed
Calculate ratios, torque, and speed for train systems. Input teeth numbers and speeds to determine outputs. Simulate train operation instantly. Preview system functionality before 3D printing.




Greenheck Toolbox
Greenheck Fan Corporation
Calculate fan laws and size ducts
Fan Law Calculator allows users to input rpm, cfm, static pressure, and horsepower. Modifying one value recalculates the others. Ductulator helps size HVAC ducts by inputting shape, dimensions, air temperature, elevation, and roughness.



Turns Counter (Magnetic)
Dmitriy Kharutskiy
Count rotations with magnetic sensor
Calculate coil by detecting magnet rotations using the smartphone's magnetic sensor. Attach a magnet to the rotating part for accurate measurements. Alternatively, measure smartphone rotation without a magnet. Calibrate the magnet before use.
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