Comparison

Steel vs Drafting Utility

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

Head to head
About

Steel

Features
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Created by a senior structural engineer. 10+ years building intuitive tools from real-world experience. Quick check of section data of various types of steel and section steel combination, including section steel model, section size, section area, theoretical weight and section characteristics, which comply with the current Chinese national standards. Application characteristics: 1. the interface design is simple and intuitive, the function is clear and easy to use. No network traffic consumption; 2. the input adapts to the characteristics of the mobile phone in a variety of ways: stepper, segment selector, roller selector... Convenient and fast; 3. the most commonly used section steel is selected. The use of rollers is convenient, fast, interesting and has a first-class feel; 4. the data are collected from the current national standards and specifications, timely, accurate and detailed; 5. the detailed size of the section is marked in situ in the attached drawing, which is clear at a glance; 6. each type of profile steel has a user-defined page to facilitate the query of non-standard profile steel; 7. special numeric keypad, convenient and fast input; 8. native application, small installation size, does not occupy valuable storage space of mobile phone. If you have any questions or suggestions, please put forward them in the Appstore comments or use the following contact information. Weibo: @结构设计App Email: lrtjqn@icloud.com Official website: https://www.luckybianbian.top

About

Drafting Utility

Features
Read full description

TriangleCalc is a simple calculator that calculates the lengths and angles of the sides of a triangle. By entering two values, the other values are automatically calculated.

Screenshots

Steel4 screens
Drafting Utility3 screens

Verdict

The call

The clearest difference is in-app purchases: Drafting Utility at none against Steel's 1. Drafting Utility also leads on update cadence (daily vs every 4 months). On price, ads, device support and iOS requirement 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. Steel sells 1 one-off in-app purchase. Drafting Utility asks for nothing beyond the download.

UpkeepUpdate frequency

Steel ships an update every 4 months, Drafting Utility daily. The most recent releases landed on November 6, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 5 level
Steel versus Drafting Utility: the parameters behind the verdict, then further details
ParameterSteelDrafting Utility
PriceFreeFree
Positive reviews63.6% of reviews—
Update frequencyEvery 4 monthsDaily — better
AdsYesYes
In-app purchasesYesNo — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.616.6 — better
Further details — not scored
Size12 MB3 MB
Age rating4+4+
Developer疆 边Masaharu Tsukamoto

In-app purchases

1 purchases

Steel

One-time1
  • 完整版$3.99
None

Drafting Utility

No in-app purchases

Questions

Is Steel free?
Steel is free to download, with in-app purchases available.
Is Drafting Utility free?
Drafting Utility is free to download, with no in-app purchases.
Do Steel or Drafting Utility have ads?
Both Steel and Drafting Utility show ads.
Which is updated more often, Steel or Drafting Utility?
Steel ships an update every 4 months, and Drafting Utility daily. Most recently, Steel was updated on November 6, 2026 and Drafting Utility on October 25, 2026.

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