Comparison

Metal World vs MechTab

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

Head to head
About

Metal World

Quickly calculate the weight of various metal and plastic materials in numerous formats. Supports nearly 300 materials and 22 shapes, providing results per unit or total weight. Also offers material comparison and specific weight displays.

Highlights
  • Weight calculation for ~300 materials
  • Supports 22 formats (sheets, bars, tubes, etc.)
  • Results per kg/m, m², or item
  • Specific weight display
  • Material comparison with EN/DIN standards
  • Information on special materials
Features
Read full description

*This app lifts almost any weight* BIKAR-METALLE GmbH is one of the world's leading suppliers to trade and industry. For 50 years, our name has stood for quality, expertise, choice, precision and reliability in the field of NF metals and plastics. We supply: Materials: - Aluminium / Aluminum - Copper - Brass - Bronze - Plastics - Special materials Formats available: - Sheets & plates - Bars & tubes - Round blanks & rings - Bushings - Profiles - Pre-cuts - Parts from drawings Why this app: We have created this app to fulfill our customers’ frequent request to be able to calculate the weights of materials quickly and easily. This extends right across our range of products. Easily calculate the weight of almost 300 different materials and elements in 22 currently specified formats. The app can: calculate weights made from almost 300 materials and elements for: Rolled and cast materials: - sheets / plates / cuttings / rings / circular blanks Bars: - round / square / flat / hexagonal / octagonal / double hexagonal Tubes: - round / square / hexagonal – angular and round-hole / bushings / hollow bars Profiles: - angle (L) / T / U / Z / double T Special shapes - Spheres Results: Weights: per kg/m or m² ● per item ● total weight For tubular forms, calculate the missing dimensions For semi-circular bars (sector of a circle), chord / height / diameter Display specific weights: The specific weights are displayed for all materials and elements. Compare materials: In the case of non-ferrous metals, EN standards are observed as well as many comparable standards according to DIN, UNI (Italy), BS (British Standard), AFNOR (France), and from Spain, Sweden and Norway. However, some of these are only similar. Materials for tool-making, mould-making and model-making: You can also find special materials for tool-making, mould-making and model-making, such as FORMODAL®, UNIDAL® or CERTAL®. Miscellaneous: Simply weigh a ball of fresh snow, an oak beam, or a wedding ring made of pure gold. There’s so much that you could weigh. Information: About BIKAR-METALLE GmbH Route planner Feedback and much more. The team at BIKAR-METALLE GmbH hopes you enjoy using the app. BIKAR-METALLE GmbH Industriestr. 3 - 17 57319 Bad Berleburg GERMANY Tel.: +49-2751-9551111 info@bikar.com www.bikar.com

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

Screenshots

Metal World4 screens
MechTab4 screens

Verdict

The call

The clearest difference is rating: Metal World at 4.8 against MechTab's 4.1. Metal World also leads on update cadence (every 2 months vs every 9 months) and review sentiment (100% vs 89%). MechTab's advantage is ratings volume (16 vs 5). 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

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

Metal World holds the better App Store score, 4.8 against 4.1. Both are backed by a comparable volume of ratings — 5 and 16 respectively. Written reviews point the same way: 100% of Metal World's written reviews are positive against 89% of MechTab's.

UpkeepUpdate frequency

Metal World ships an update every 2 months, MechTab every 9 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

Scorecard5 real differences · 5 level
Metal World versus MechTab: the parameters behind the verdict, then further details
ParameterMetal WorldMechTab
PriceFreeFree
Rating4.8 (5 ratings) — better4.1 (16 ratings)
Positive reviews100.0% of reviews — better88.6% of reviews
Number of ratings516 — better
Update frequencyEvery 2 months — betterEvery 9 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS5.1.1 — better15.0
Further details — not scored
Size37 MB9 MB
Age rating4+4+
DeveloperBIKAR-METALLE GmbHWerder AG

Customer experience

Metal World

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

MechTab

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

In-app purchases

None

Metal World

No in-app purchases

None

MechTab

No in-app purchases

Questions

Is Metal World free?
Metal World is free to download, with no in-app purchases.
Is MechTab free?
MechTab is free to download, with no in-app purchases.
Which has better reviews, Metal World or MechTab?
Metal World is rated higher. Metal World averages 4.8 out of 5 from 5 ratings, while MechTab averages 4.1 from 16 ratings.
Do Metal World or MechTab have ads?
Neither Metal World nor MechTab shows ads.
Which is updated more often, Metal World or MechTab?
Metal World ships an update every 2 months, and MechTab every 9 months. Most recently, Metal World was updated on November 1, 2026 and MechTab on November 6, 2026.

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