# MechTab — The mechanic's helper tool > Mechanic's reference tool with data on tolerances, threads, cutting, and calculators. (iPhone/iPad app by Werder AG.) - Source: https://appshunter.io/ios/app/mechtab/id553201101 (this page in markdown: same URL + `.md`) - Developer: [Werder AG](https://appshunter.io/developer/553201104) - Category: Productivity, Education - Price: Free - Rating: 4.10/5 from 16 App Store ratings · 176 written reviews indexed - Age rating: 4+ - Requires: iOS 15.0 · 9 MB - Languages: American English, French (France), German (Germany), Italian - Released: 2012-08-23 - Data updated: 2026-08-15 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/mechtab/id553201101/reviews.md ## What is MechTab? Werder AG introduces the ultimate tool for mechanics. MechTab provides information about ISO-Tolerances, Threads, Cutting Data, Wrench Size and Roughness. Tolerances: A - ZC, holes and shafts General Tolerances: Charts for linear dimensions, radii/chamfer and angular dimensions. Geometrical Tolerances: Symbols, drawings and explanations as well as charts for the different geometrical tolerances. Threads: BA, BSF, G, Heli-Coil, M, MF, Pg, Tr, UNC, UNEF, UNF, W, Metric-Non-Standard Cutting Data: Cutting Speed and Spindle Speed, Feed Rates, Processing duration Wrench-Size to Width across Corners: 4-,6-8-,10-,12-,14-Cornered Torque: 3.6, 6.9, 8.8, 10.9, 12.9 Roughness: Rz, Ra, N, Triangle-Notation Weight: calculate the weight of different materials in different profiles. Material list is editable. Triangle: calculate sides, angles and the area of a triangle by entering 3 values according to a drawing. Trowalisation: calculate the number of pieces ## Key features - ISO-Tolerance data (holes and shafts) - Thread specifications - Cutting data calculations - Wrench size conversions - Roughness parameters - Material weight calculator - Triangle property calculator ## Recent user reviews (10 of 176) All indexed reviews: https://appshunter.io/ios/app/mechtab/id553201101/reviews.md ### 5/5 — Très pratique *2026-03-04* Outil indispensable dans l’usinage ### 4/5 — Superb *2026-02-16, version 2.8.3* Ottima ### 5/5 — Topp *2026-02-11, version 2.8.3* Non può mancare in in officina meccanica ### 5/5 — Baszo *2025-12-18, version 2.8.3* Fasza szeretem kurva jo ### 5/5 — Ottima *2025-12-17, version 2.8.3* Chi ha messo meno di 5 stelle stava mentendo ### 5/5 — Eccellente *2025-11-18, version 2.8.3* Ottima ed intuitiva ### 3/5 — Manque d info *2025-11-04* Un petit texte pour expliquer serai un plus ### 5/5 — Nur 2 Nachkommastellen *2025-09-16, version 2.8.3* Klasse App, ich würde mir bei der Berechnung von Dreiecken allerdings 3 Nachkommastellen wünschen, anstatt auf 2 zu runden. Kreisabschnittsberechnung wäre ebenfalls schön. ### 5/5 — Übersichtlich *2025-08-03, version 2.8.3* Macht was es soll ### 5/5 — Spitze *2025-07-25, version 2.8.3* Einfach klasse, übersichtlich und gut bedienbar, kein überflüssiger Schnickschnack ## Frequently asked questions about MechTab ### What kind of information does MechTab provide? MechTab provides a wide range of technical data essential for mechanics. This includes detailed information on ISO-Tolerances for holes and shafts, various thread specifications, cutting data like speed and feed rates, wrench sizes, and roughness parameters (Rz, Ra). ### What are the calculator features in MechTab? The app includes several useful calculators. You can calculate the weight of different materials based on their profiles, determine the sides, angles, and area of a triangle by inputting three values, and calculate the number of pieces required for trowalisation. ### Is MechTab free to use? Yes, MechTab is available for free. The application does not have any in-app purchases or advertisements, making it a completely free tool for users. ### What types of threads are supported by MechTab? MechTab supports a comprehensive list of thread types, including BA, BSF, G, Heli-Coil, M, MF, Pg, Tr, UNC, UNEF, UNF, W, and Metric-Non-Standard threads, providing broad compatibility for various mechanical applications. ### Who would benefit most from using MechTab? This app is designed for professional mechanics, machinists, engineers, and anyone in a technical field who frequently needs to reference precise measurements, specifications, and perform quick calculations related to mechanical work. ## Version history (last 5 releases) ### 3.0.0 — 2026-07-10 We've added a Quick Search for Threads and Tolerances. ### 2.8.3 — 2024-07-14 With this version we fix some bugs. ### 2.8.2 — 2024-04-07 With this version we fix some bugs. ### 2.7 — 2019-05-16 With this version we fix some bugs. Besides that we introduce a news view which is only visible if there are any news published. ### 2.6.1 — 2018-05-21 New in version 2.6.1 Minor Bugs have been fixed with this update ## Apps similar to MechTab | App | Rating | Price | Category | | --- | --- | --- | --- | | [CNC Machinist Calculator Ultra](https://appshunter.io/ios/app/cnc-machinist-calculator-ultra/id6474093839) | 4.9 (24) | Free | Productivity | | [Walter Feeds & Speeds](https://appshunter.io/ios/app/walter-feeds-and-speeds/id454963587) | 2.4 (8) | Free | Productivity | | [Machining Advisor Pro](https://appshunter.io/ios/app/machining-advisor-pro/id1321154225) | 4.0 (162) | Free | Productivity | | [ISO Fits](https://appshunter.io/ios/app/iso-fits/id396863755) | 4.2 (6) | Free | Productivity | | [Thread Calculator](https://appshunter.io/ios/app/thread-calculator/id1559560290) | 4.3 (13) | Free | Productivity | | [Hoffmann Machining Calculator](https://appshunter.io/ios/app/hoffmann-machining-calculator/id1450938067) | — | Free | Productivity | ## Related topics [mechanic tool](https://appshunter.io/ios/topics/mechanic-tool) · [mechanic tools](https://appshunter.io/ios/topics/mechanic-tools) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-15.*