Comparison

MechTab vs Thread Calculator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • ISO-Tolerance data (holes and shafts)
  • Thread specifications
  • Cutting data calculations
  • Wrench size conversions
  • Roughness parameters
  • Material weight calculator
  • Triangle property calculator
Features
Read full description

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

About

Thread Calculator

This app provides a quick and easy way to calculate thread dimensions for various units, including tap hole sizes and bolt specifications. It helps metalworkers find precise measurements for internal and external threads without consulting tables.

Highlights
  • Thread cutting calculator for multiple units
  • Cold forming calculator
  • Thread repair calculator
  • Tap hole and bolt diameter calculation
  • Saves time compared to tables
Features
Read full description

The app includes: - A calculator for thread cutting for the following units: M, MF, UNC, UNEF, UNF, UNR, UNS, NPT, NPTF, NPSC, NPSF, NPSL, NPSM, BA, BSP, BSF, BSW, BSPP, TR, and TRF - A calculator for cold forming - A calculator for thread repair You want to know which tap hole you should drill for threading or which bolt you should use? With this app, you will find the desired measures in no time: Simply select the desired thread type, nominal size, and pitch and you will get the matching diameter for your project. This saves precious time you would have spent tediously searching for internal and external thread dimensions in tables. As this app is still in its development phase, new features will follow soon, so stay tuned! GSR Gustav Stursberg GmbH is a manufacturer for high-quality thread cutting tools with 130 years of operational experience in the area of threading tool production. The product portfolio includes a wide selection of tools for different areas of application. GSR taps, twist drills, round dies, and tool holders are manufactured to the highest quality standards in our own production facilities. The constant quality control during the production process guarantees a consistent good quality in all national as well as international production facilities. This requires enormous precision, which is reflected by our tools. Precision is in the details. Since 1889.

Screenshots

MechTab4 screens
Thread Calculator4 screens

Verdict

The call

The clearest difference is review sentiment: MechTab at 89% against Thread Calculator's 33%. MechTab also leads on ads (none vs shown) and monetization model (free vs ad-supported). Thread Calculator's advantage is rating (4.3 vs 4.1). On price, ratings volume, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Thread Calculator holds the better App Store score, 4.3 against 4.1. Both are backed by a comparable volume of ratings — 16 and 13 respectively. Written reviews complicate that: 89% of MechTab's written reviews are positive against 33% of Thread Calculator's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

MechTab ships an update every 9 months, Thread Calculator every 18 months. The most recent releases landed on September 15, 2026 and September 9, 2026 respectively.

Scorecard5 real differences · 5 level
MechTab versus Thread Calculator: the parameters behind the verdict, then further details
ParameterMechTabThread Calculator
PriceFreeFree
Rating4.1 (16 ratings)4.3 (13 ratings) — better
Positive reviews88.6% of reviews — better33.3% of reviews
Number of ratings16 — better13
Update frequencyEvery 9 months — betterEvery 18 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.015.0
Further details — not scored
Size9 MB25 MB
Age rating4+4+
DeveloperWerder AGGSR Gustav Stursberg GmbH

Customer experience

MechTab

All ratings16 ratings
Positive75.0%
Neutral6.3%
Negative18.8%
Written reviews176 reviews
Positive88.6%
Neutral8.0%
Negative3.4%

Thread Calculator

All ratings13 ratings
Positive84.6%
Neutral7.7%
Negative7.7%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

In-app purchases

None

MechTab

No in-app purchases

None

Thread Calculator

No in-app purchases

Questions

Is MechTab free?
MechTab is free to download, with no in-app purchases.
Is Thread Calculator free?
Thread Calculator is free to download, with no in-app purchases.
Which has better reviews, MechTab or Thread Calculator?
Thread Calculator is rated higher. MechTab averages 4.1 out of 5 from 16 ratings, while Thread Calculator averages 4.3 from 13 ratings.
Do MechTab or Thread Calculator have ads?
Thread Calculator shows ads; MechTab does not.
Which is updated more often, MechTab or Thread Calculator?
MechTab ships an update every 9 months, and Thread Calculator every 18 months. Most recently, MechTab was updated on September 15, 2026 and Thread Calculator on September 9, 2026.

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