MechTab vs Dormer Pramet Calculators
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MechTab
This app offers a comprehensive set of tools for mechanics, providing essential data on tolerances, threads, cutting speeds, wrench sizes, and roughness. It also includes calculators for material weight, triangle properties, and trowalisation.
- ISO-Tolerance data (holes and shafts)
- Thread specifications
- Cutting data calculations
- Wrench size conversions
- Roughness parameters
- Material weight calculator
- Triangle property calculator
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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
Dormer Pramet Calculators
This app offers engineers and CNC operators essential cutting data for various machining operations like turning, drilling, threading, and milling. It features an intuitive interface to calculate machining time, torque, power, cutting effort, removal rate, and chip thickness, incorporating WMG technical data.
- Cutting data for turning, drilling, threading, milling
- Machining time calculation
- Torque, power, and cutting effort calculation
- Removal rate and chip thickness calculation
- WMG technical data format
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Dormer Pramet’s machining calculator app provides engineers and CNC operators the relevant cutting data for various turning, drilling, threading and milling applications. The app has an easy-to-use interface for providing machining time, torque, power, cutting effort, removal rate and chip thickness. It includes the WMG (Work Material Group) technical data format.
Screenshots
Verdict
The clearest difference is rating: Dormer Pramet Calculators at 5.0 against MechTab's 4.1. Dormer Pramet Calculators also leads on update cadence (every 3 months vs every 9 months) and iOS requirement (11.0 vs 15.0). MechTab's advantage is review sentiment (89% vs 50%) and ratings volume (16 vs 1). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
Dormer Pramet Calculators holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: MechTab has 16 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 89% of MechTab's written reviews are positive against 50% of Dormer Pramet Calculators's, so the app with the better star average is not the one people write more warmly about.
MechTab ships an update every 9 months, Dormer Pramet Calculators every 3 months. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.
| Parameter | MechTab | Dormer Pramet Calculators |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (16 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 88.6% of reviews — better | 50.0% of reviews |
| Number of ratings | 16 — better | 1 |
| Update frequency | Every 9 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 109 MB |
| Age rating | 4+ | 4+ |
| Developer | Werder AG | Dormer Pramet Ltd |
Customer experience
MechTab
Dormer Pramet Calculators
In-app purchases
MechTab
No in-app purchases
Dormer Pramet Calculators
No in-app purchases
Questions
Is MechTab free?
Is Dormer Pramet Calculators free?
Which has better reviews, MechTab or Dormer Pramet Calculators?
Do MechTab or Dormer Pramet Calculators have ads?
Which is updated more often, MechTab or Dormer Pramet Calculators?
Other comparisons
