# Army Engineer Guide vs Structural SteelBook

The clearest difference is review sentiment: Army Engineer Guide at 33% against Structural SteelBook's 0%. Army Engineer Guide also leads on price ($0.99 vs $4.99) and iOS requirement (12.0 vs 16.0). Structural SteelBook's advantage is update cadence (every 3 days vs every 3 months). On ads, in-app purchases, monetization model and chart position there is nothing between them.

Army Engineer Guide costs $0.99 and Structural SteelBook $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Army Engineer Guide ships an update every 3 months, Structural SteelBook every 3 days. The most recent releases landed on September 12, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Army Engineer Guide | Structural SteelBook |
| --- | --- | --- |
| Price | **$0.99** | $4.99 |
| Rating | — | **[4.7 (6 ratings)](https://appshunter.io/ios/app/structural-steelbook/id6444883369/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | **33.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | Paid | Paid |
| Best chart rank | #199 | **#195** |
| Size | 38 MB | 71 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 17+ | 4+ |
| Developer | [Polemics Applications LLC](https://appshunter.io/developer/482504032) | [David Homes](https://appshunter.io/developer/320954174) |

## What reviewers say

### Army Engineer Guide

[App page](https://appshunter.io/ios/app/army-engineer-guide/id564946784)

**Currently charting:** #199 Top Paid · Reference (US App Store)

This app provides essential engineering tools and references for military engineers. It offers unit converters, construction calculators, and planning resources designed for offline use in the field. Access field manuals and helpful links without ads or subscriptions.

**Highlights:** Unit Converters (Metric/US/Military), Construction Calculators (Concrete, Lumber, Excavation, Sandbag), Range Finder, Customizable Packing Lists, Field Notes Journal, Offline Access to Field References

**Features:** macOS Compatibility

**In-app purchases:** none


### Structural SteelBook

[App page](https://appshunter.io/ios/app/structural-steelbook/id6444883369)

**Currently charting:** #195 Top Paid · Reference (US App Store)

Access a comprehensive reference for structural steel shapes, including multiple AISC library versions. Easily switch between imperial and metric units, sort sections, and perform quick searches. Print or share section properties and cross-sections.

**Highlights:** Multiple AISC library versions (v15, v13, v14, LRFD, ASD), Imperial and metric unit switching, Sort sections by property, Quick search for steel sections, Side-by-side imperial/metric equivalencies, Print and share section properties, Dark/light mode and dynamic type support

**In-app purchases:** none


## Frequently asked questions

### Is Army Engineer Guide free?

Army Engineer Guide costs $0.99, with no in-app purchases.

### Is Structural SteelBook free?

Structural SteelBook costs $4.99, with no in-app purchases.

### Do Army Engineer Guide or Structural SteelBook have ads?

Neither Army Engineer Guide nor Structural SteelBook shows ads.

### Which is updated more often, Army Engineer Guide or Structural SteelBook?

Army Engineer Guide ships an update every 3 months, and Structural SteelBook every 3 days. Most recently, Army Engineer Guide was updated on September 12, 2026 and Structural SteelBook on September 20, 2026.

### Which is more popular, Army Engineer Guide or Structural SteelBook?

Army Engineer Guide currently peaks at #199 in the App Store charts, and Structural SteelBook at #195. Chart position reflects recent download velocity rather than total install base.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*