Mechanical Toolkit vs Fastener Pro
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Mechanical Toolkit
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Introducing Mechanical Toolkit by Werder AG - Your Ultimate Mechanic's Companion! Unlock the power of Mechanical Toolkit, the indispensable toolkit designed for mechanics everywhere. Whether you're tackling ISO-Tolerances, mastering Threads, or optimizing Cutting Data, MechTab has you covered. Explore a wealth of features: Tolerances: From A to ZC, delve into precise measurements for holes, shafts, and beyond. General Tolerances: Access easy-to-read charts for linear, radii/chamfer, and angular dimensions. Geometrical Tolerances: Gain insights through symbols, drawings, and detailed explanations. Threads: Navigate various thread types effortlessly, including BA, BSF, G, and more. Cutting Data: Fine-tune cutting and spindle speeds, feed rates, and processing durations. Wrench-Size to Width across Corners: Instantly determine wrench sizes for cornered profiles. Roughness: Understand surface finishes with Rz, Ra, N values, and Triangle-Notation. Triangle: Simplify triangle calculations for sides, angles, and area with intuitive tools. Weight: Estimate material weights across different profiles, with the added convenience of editable lists. Trowalization: Calculate optimal machine load capacities for efficient processing. Experience Mechanical Toolkit and revolutionize your mechanical endeavors today!
Fastener Pro
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Determine a safe and reliable fastener torque for your application. By selecting your bolt material spec, nut material spec, and set material specs from our comprehensive material database we will evaluate all possible failure modes of the bolt, nut, set material, and joint materials and provide a details stress analysis as well as the recommended torque. Additional features include determination of preload from torque, torque from preload, load analysis, and equivalent angle to turn fastener to achieve desired results. Disclaimer: Bolt torque and preload values are estimates only. Actual requirements depend on material, lubrication, standards, and installation conditions. Verify all values using official engineering documentation and calibrated tools. Developer assumes no liability for use of this information.
Screenshots
Verdict
The clearest difference is price: Mechanical Toolkit at Free against Fastener Pro's $14.99. Mechanical Toolkit also leads on iOS requirement (13.0 vs 15.1). Fastener Pro's advantage is in-app purchases (none vs 1) and update cadence (every 5 weeks vs every 20 months). On ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Mechanical Toolkit is free to download; Fastener Pro costs $14.99 up front. Mechanical Toolkit sells 1 one-off in-app purchase. Fastener Pro asks for nothing beyond the download.
Mechanical Toolkit ships an update every 20 months, Fastener Pro every 5 weeks. The most recent releases landed on September 14, 2026 and December 9, 2025 respectively.
| Parameter | Mechanical Toolkit | Fastener Pro |
|---|---|---|
| Price | Free β better | $14.99 |
| Update frequency | Every 20 months | Every 5 weeks β better |
| Ads | No | No |
| In-app purchases | Yes | No β better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 β better | 15.1 |
| Further details β not scored | ||
| Size | 49 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Shital Gorasiya | Jeffrey Andrews |
In-app purchases
Mechanical Toolkit
- Lifetime Purchase$4.99
Fastener Pro
No in-app purchases





