Mass vs K
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mass
This utility app calculates the mass of metal and plastic preforms directly on the field. It supports various preform and material types, offering metric and imperial measurement modes for convenience.
- 13 preform types
- 9 material types with alloys
- Graphical preform representation
- Metric and imperial modes
- Help section
- Easy to use
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Mass-Finder is designed to calculate the mass of metal and plastic preforms while on the field. Features: - 13 different preform types - 9 material types, each with it’s own alloy types - Graphical representation for each preform type - Help section - Metric and imperial measurement modes - Easy to use - Free updates If you have any suggestions or find any bugs, please send us an email at contact@solazdazen.com
K
This utility app calculates bend allowances and deductions for sheet metal fabrication. It helps engineers and fabricators determine precise K-Factor values, improving accuracy and reducing material waste in bending processes.
- K-Factor calculation
- Bend allowance and deduction
- Material and thickness support
- Instant results
- User-friendly interface
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K-Factor Bend Allowance Calculator is a powerful and easy-to-use tool designed for engineers, fabricators, sheet metal workers, and designers to quickly calculate accurate bend allowances and bend deductions. Whether you are working with sheet metal, steel, or other materials, this app helps you determine the correct K-Factor for precise bending results, reducing errors and saving time in production. Key Features: =========== • K-Factor Calculator – Easily calculate K-Factor values for accurate bend allowance. • Bend Allowance & Deduction – Get precise values for sheet metal bending. • Material & Thickness Support – Works with different sheet thicknesses and bend radii. • Instant Results – Enter your parameters and get accurate results instantly. • Essential for Fabricators – Ideal for CNC programmers, mechanical engineers, and manufacturing professionals. • User-Friendly Design – Simple, clean, and fast interface for quick calculations. Why Use This App? ============== Accurate K-Factor calculation is essential for ensuring correct flat patterns and minimizing material wastage. With this app, you can improve your sheet metal bending accuracy, optimize design, and save valuable time on the shop floor.
Screenshots
Verdict
The clearest difference is price: Mass at Free against K's $2.99. Mass also leads on update cadence (every 3 weeks vs every 43 months) and iOS requirement (8.0 vs 15.0). On review sentiment, ads, 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
Mass is free to download; K costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Mass ships an update every 3 weeks, K every 43 months. The most recent releases landed on October 23, 2026 and October 30, 2026 respectively.
| Parameter | Mass | K |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.5 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 weeks — better | Every 43 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 7 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Solaz Dazen srl | Bhavinkumar Satashiya |
Customer experience
Mass
K
In-app purchases
Mass
No in-app purchases
K
No in-app purchases









