Mechanical Toolkit vs DatumLab
Price, ratings, monetisation and update history for both apps, side by side — 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!
DatumLab
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DatumLab is a practical mechanical toolbox for machinists, CNC operators, mechanical designers, and shop-floor technicians. Use it to look up common thread data, calculate ISO fits, estimate speed and feed values, convert shop units, check material references, and save frequently used setups. Core tools work offline, so you can keep working at the machine, in the workshop, or during design review without depending on a network connection. Key tools: Thread calculator for metric, UNC, UNF, BSP, NPT, trapezoidal, and Heli-Coil references Tap drill, clearance hole, pitch, pitch diameter, and minor diameter lookup ISO tolerance and fit calculator for common hole and shaft zones Speed and feed calculations for milling, drilling, tapping, and turning Radial chip thinning and thread turning helpers Unit conversion for length, pressure, torque, speed, force, and mass Material references for common aluminum, steel, stainless, non-ferrous, and plastic materials Weight, bolt preload, and geometry helpers Favorites, recent calculations, custom tools, custom materials, and exportable reports DatumLab is designed for quick reference and setup planning. Values are reference starting points only. Always verify final machining parameters with your tool, machine, workholding, material, and supplier recommendations.
Screenshots
Verdict
The clearest difference is in-app purchases: DatumLab at none against Mechanical Toolkit's 1. Mechanical Toolkit's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price 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 Toolkit sells 1 one-off in-app purchase. DatumLab asks for nothing beyond the download.
| Parameter | Mechanical Toolkit | DatumLab |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 20 months | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 49 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Shital Gorasiya | 建东 刘 |
In-app purchases
Mechanical Toolkit
- Lifetime Purchase$4.99
DatumLab
No in-app purchases





