TopOpt 3D vs Mechanical Components
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TopOpt 3D
Perform 3D structural optimization using topology optimization on your iPad or iPhone. Adjust loads, supports, volume fractions, and grid sizes to observe design evolution. Experiment with different parameters to discover new minimums.
- 3D topology optimization
- Adjustable loads and supports
- Variable volume fractions
- Experiment with grid sizes
- Design evolution visualization
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Use your iPad/iPhone to perform structural optimization by the topology optimization method in 3D ! Move loads and supports and watch the design evolve to a new minimum. Experiment with different volume fractions and grid sizes and see what happens.
Mechanical Components
Test your knowledge of mechanical components with interactive quizzes. Features high-quality images, instant feedback, and multiple difficulty levels to help you master engineering parts. Ideal for students, DIY enthusiasts, and professionals.
- Interactive quizzes on mechanical parts
- High-quality component images
- Instant feedback and facts
- Multiple difficulty levels
- Learn and master engineering components
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Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Test your knowledge of mechanical components and become an expert with Mechanical Components Trivia! Whether you're an engineering student, a DIY enthusiast, or a mechanical professional, this app is your ultimate tool to identify, learn, and master mechanical parts. Features: Interactive Quizzes: Challenge yourself with hundreds of trivia questions on mechanical components like gears, valves, bearings, and more. High-Quality Images: Each quiz features crisp, detailed images of components for better learning and identification. Learn-as-You-Play: Get instant feedback and learn interesting facts about each part. Multiple Difficulty Levels: Progress from beginner to expert as you tackle increasingly challenging quizzes. Expand your mechanical knowledge, sharpen your skills, and have fun along the way! Perfect for preparing for exams, interviews, or simply satisfying your curiosity about the fascinating world of mechanical engineering. Download Mechanical Components today and see how many components you can identify like: Screw Nut Bolt Washer Locknut Rivet Pin Cotter pin Clevis pin Spring washer Split pin Lock washer Flat washer Circlip Retaining ring Key (mechanical) Woodruff key Hex nut Wing nut Eye bolt Anchor bolt Threaded rod Set screw Self-tapping screw Machine screw Shoulder bolt Carriage bolt Hex bolt Flange bolt Square bolt Eyelet Dowel pin Taper pin Snap ring Hose clamp Pipe clamp Hose barb Grease nipple Shim Spacer Bushing Sleeve bearing Plain bearing Thrust washer Spherical bearing Ball bearing Roller bearing Tapered roller bearing Needle roller bearing Thrust bearing Linear bearing Cam follower Ball transfer unit Guide rail Shaft collar Shaft Axle Keyed shaft Splined shaft Gear shaft Flexible coupling Rigid coupling Jaw coupling Bellows coupling Oldham coupling Universal joint Ball joint Linear guide Linear rail Linear actuator Rotary actuator Pneumatic cylinder Hydraulic cylinder Solenoid Gas spring Tension spring Compression spring Leaf spring Belleville spring Torsion spring Constant force spring Extension spring Coil spring Conical spring Wave spring Spiral spring Retainer spring Spring pin Belleville washer Vibration isolator Shock absorber Damper Diaphragm Bellows O-ring Gasket Seal Lip seal Mechanical seal Oil seal Piston ring Wear ring Dust cap Labyrinth seal V-seal Shaft seal Rubber gasket Foam gasket Metal gasket Air filter Fuel filter Oil filter Coolant filter Hydraulic filter Breather filter Inline filter Gear Spur gear Helical gear Bevel gear Worm gear Rack and pinion Planetary gear Crown gear Internal gear Gearbox Gear reducer Pinion Idler gear Gear train Clutch Electromagnetic clutch Friction clutch Dog clutch Centrifugal clutch Fluid coupling Torque converter Transmission Differential CV joint Propeller shaft Drive shaft Flywheel Crankshaft Camshaft Rocker arm Connecting rod Piston Valve Valve seat Valve guide Valve spring Valve lifter Valve stem seal Valve cap Butterfly valve Check valve Ball valve Gate valve Globe valve Needle valve Diaphragm valve Pressure relief valve Safety valve Solenoid valve Pilot valve Flow control valve Directional control valve Hydraulic pump Gear pump Vane pump Piston pump Diaphragm pump Rotary pump Centrifugal pump Axial flow pump Peristaltic pump Screw pump Submersible pump Reciprocating pump Hydraulic motor Pneumatic motor Electric motor Stepper motor Servo motor Linear motor Induction motor Synchronous motor DC motor Brushless motor Brush motor Thermocouple Strain gauge Load cell Proximity sensor Pressure sensor Temperature sensor Position sensor Encoder Resolver Tachometer Potentiometer Thermistor RTD sensor Flow meter Level sensor Accelerometer Vibration sensor Gyroscope Humidity sensor Airflow sensor Shock sensor Proximity switch Limit switch Toggle switch Push-button Slide switch Rotary switch DIP switch Rocker switch Lever switch Tactile switch Relays Contactors
Screenshots
Verdict
The clearest difference is rating: TopOpt 3D at 3.7 against Mechanical Components's 3.0. TopOpt 3D also leads on in-app purchases (none vs 4) and update cadence (every 6 weeks vs every 7 months). On price, ratings volume and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Mechanical Components sells 4 in-app purchases, starting at $7.99 per 7 days. TopOpt 3D asks for nothing beyond the download.
TopOpt 3D holds the better App Store score, 3.7 against 3.0. Both are backed by a comparable volume of ratings — 3 and 2 respectively.
TopOpt 3D ships an update every 6 weeks, Mechanical Components every 7 months. The most recent releases landed on October 4, 2026 and October 2, 2026 respectively.
| Parameter | TopOpt 3D | Mechanical Components |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 3 — better | 2 |
| Update frequency | Every 6 weeks — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 11.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 103 MB | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | DTU Mechanical Engineering | Forwa Elade Wunde |
Customer experience
TopOpt 3D
Mechanical Components
In-app purchases
TopOpt 3D
No in-app purchases
Mechanical Components
- Week$7.997 Days
- Month$19.991 Month
- 6 months$19.996 Months
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- Year$29.991 Year
Questions
Is TopOpt 3D free?
Is Mechanical Components free?
Which has better reviews, TopOpt 3D or Mechanical Components?
Do TopOpt 3D or Mechanical Components have ads?
Which is updated more often, TopOpt 3D or Mechanical Components?
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