Mechanical Engineering Toolkit

APPS BAY LIMITED · Utilities

4.8 64 ratings Free

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Chart standing · US

Not currently charting in this storefront.

What changed · US

Listing changes AppTracker has observed for this app in this storefront — new versions, price moves, rating shifts, and store copy.

Oct 13, 2026
New version 1.19.0 → 1.20.0

• Six new calculators: Hydraulic Cylinder, Thermal Radiation, Pump Affinity Laws, Flywheel Braking, Elastic Strain Energy and Pipe Insulation. • Two selectable worked examples for every mechanics-of-materials tool, plus clearer calculation steps and vessel checks. • Compare saved calculations in Projects, even across languages. • New material and pipe presets, localized search terms, and Undo for favorites.

Oct 11, 2026
New version 1.18.0 → 1.19.0
Oct 8, 2026
New version 1.17.0 → 1.18.0
Oct 7, 2026
New version 1.16.0 → 1.17.0
Oct 3, 2026
New version 1.15.0 → 1.16.0
Sep 25, 2026
New version 1.14.0 → 1.15.0
Sep 20, 2026
New version 1.13.0 → 1.14.0
Sep 13, 2026
New version 1.12.0 → 1.13.0
Sep 8, 2026
New version 1.11.0 → 1.12.0
Aug 29, 2026
New version 1.10.0 → 1.11.0
Aug 26, 2026
New version 1.5.0 → 1.10.0

Ratings breakdown · US

The star breakdown behind this app's rating in this storefront.

5★ 84% 54
4★ 11% 7
3★ 2% 1
2★ 2% 1
1★ 2% 1

In-app purchases · US

What this app sells inside itself, grouped by kind and priced for this storefront.

One-time purchases
Remove Ads $2.99

Screenshots

About

Mechanical Engineering Toolkit is a professional engineering calculator for students, researchers, and practicing engineers. Choose a formula, enter your variables, and get instant results — with calculation steps, formulas, diagrams, and unit conversions shown along the way. Switch between SI and Imperial units anytime, save favorites, and find the right tool fast with recommendations by major. Save your inputs as named projects, and export any result as text, image, CSV or PDF. Categories and tools: Mechanics of Material • Moments of inertia of plane areas • Force-displacement relation of a bar • Torsion formula and angle of twist • Flexure formula of a beam • Transverse shear stress • Deflections and slopes of cantilever and simple beams • Plane stress transformation and Mohr's circle • Principal stresses and planes • Spherical shell and thin-walled pressure vessel stresses • Buckling load of a column • Thermal deformation and stress • Combined loading • Bolted / riveted joints • Fatigue safety factor • Shaft power and torque Statics • Centroid of an area • Resultant of a force system • Beam reactions • 2D truss analysis Machine Design • Helical compression springs • Spur gear geometry and stresses • Shaft fatigue design (DE-Goodman) • Bearing L10 life • Belt and chain drives • Bolt preload / torque-tension • Fillet weld strength • Press / shrink-fit interference • Shaft critical speed (Dunkerley) • Beam natural frequency (five end conditions) • Torsional natural frequency (one or two rotors) Fluids & Thermal • Reynolds number and flow regime • Pipe pressure drop (Darcy-Weisbach with Colebrook) • Pump and fan power • Composite wall conduction • Fin efficiency • Heat exchanger sizing by LMTD Theory of Elasticity • Constitutive relation of linear elastic material • Stress/strain of linear elastic material Composite Material • Lamina and laminate stress/strain • Lamina engineering constants • Laminate plane and 3D properties • Rule of mixtures • Failure criteria (Tsai-Hill, Tsai-Wu) Reference Tables • Drill & tap chart (metric and imperial thread series) • ISO 286 fits & tolerances • Standard sections (AISC W, IPE, HEB) • Unit converter No account required. Works offline. Available in English, Chinese, German, French, and Japanese.

What's new · 1.20.0

• Six new calculators: Hydraulic Cylinder, Thermal Radiation, Pump Affinity Laws, Flywheel Braking, Elastic Strain Energy and Pipe Insulation. • Two selectable worked examples for every mechanics-of-materials tool, plus clearer calculation steps and vessel checks. • Compare saved calculations in Projects, even across languages. • New material and pipe presets, localized search terms, and Undo for favorites.

Details

ReleasedJan 2022
UpdatedJul 2026
Version1.20.0
Size29.6 MB
RequiresiOS 13.0 or later
Age rating4+
LanguagesChinese, English
PriceFree
Categories UtilitiesEducation
Bundle IDcom.appsbay.mechanicalEngineeringToolkit