Mechanical Engineering Toolkit Downloads & RevenueMechanical Engineering Toolkit · App Store
Not in any tracked top chart right now.
Updated 9 Nov 2026 · rankings refresh through the day
DeveloperAPPS BAY LIMITED
CategoryUtilities
PriceFree
Released
Rating★ 4.8 (64)
Version1.26.0
Age rating4+
First seen by us
24 Oct 2026
24 Oct 2026Mechanical Engineering Toolkit update history & changes
Last change · 6 events since 11 Jan 2022Full timeline ↓📦Updated to version 1.26.0📦Updated to version 1.25.0🆕First spotted by AppInsider🆕Released on the App Store
Full timeline · 6 events
- ✏️Mechanical Engineering Toolkit: app got bigger46 MB → 50 MB (+10%)
- 📦Mechanical Engineering Toolkit updated to version 1.26.0• New tools: Preloaded Joint Load Sharing, Taper Geometry and Bolt, Nut & Washer Dimensions.
• Tool More menus bring favorites, About and history together; long press opens them too.
• About now shows category, majors and industries; history opens with a tap.
• Improved saved-project filters, copying, Unit Converter controls, comparison swapping and large-text layouts.… more - 📦Mechanical Engineering Toolkit updated to version 1.25.0- New sealing and machine design tools, including O-Ring Tolerance Analysis.
- Filter by major, industry and category, and save your searches.
- Carry precise inputs between related calculators.
- Explore What's New and clearer guidance for saved inputs.… more - 🆕Mechanical Engineering Toolkit first spotted by AppInsiderUnited States (found via developer)
- 📦Mechanical Engineering Toolkit version 1.23.0• New Mass Moment of Inertia and Assembly Center of Mass tools, with examples and CSV/PDF reports.
• Find saved work faster with project search and Favorites filtering.
• Copy calculations, comparisons and reference rows with labels and units.
• Improved copying, sharing, dialogs, and language and unit handling.… more - 🆕Mechanical Engineering Toolkit released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.8 ★
64 ratings
Measured
Mechanical Engineering Toolkit on the App Store
App details
App ID
1601099443
Publisher
APPS BAY LIMITED
On the store since
Jan 2022
4 years on the store
Minimum OS
iOS 15.0+
iPhone 6s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
3
EN ZH ZH
Size
50 MB
Also listed in
Education
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.8 ★
64 ratings
Measured
Ratings
64
Measured
About Mechanical Engineering Toolkit
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.
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.
Latest updates
1.26.0
• New tools: Preloaded Joint Load Sharing, Taper Geometry and Bolt, Nut & Washer Dimensions.
• Tool More menus bring favorites, About and history together; long press opens them too.
• About now shows category, majors and industries; history opens with a tap.
• Improved saved-project filters, copying, Unit Converter controls, comparison swapping and large-text layouts.
1.25.0
- New sealing and machine design tools, including O-Ring Tolerance Analysis.
- Filter by major, industry and category, and save your searches.
- Carry precise inputs between related calculators.
- Explore What's New and clearer guidance for saved inputs.
1.23.0
• New Mass Moment of Inertia and Assembly Center of Mass tools, with examples and CSV/PDF reports.
• Find saved work faster with project search and Favorites filtering.
• Copy calculations, comparisons and reference rows with labels and units.
• Improved copying, sharing, dialogs, and language and unit handling.
Store changes
What Mechanical Engineering Toolkit changed on its store page: name, icon, screenshots, price, size, languages, requirements.
App got bigger
46 MB → 50 MB (+10%)
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