# Army Engineer Guide vs API Pipe Properties

The clearest difference is update cadence: Army Engineer Guide at every 3 months against API Pipe Properties's every 39 months. Army Engineer Guide also leads on chart position (#199 vs unranked) and device support (3 vs 1). On ads and in-app purchases there is nothing between them.

Army Engineer Guide costs $0.99 and API Pipe Properties $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Army Engineer Guide ships an update every 3 months, API Pipe Properties every 39 months. The most recent releases landed on September 12, 2026 and September 4, 2026 respectively.

## The numbers

| Metric | Army Engineer Guide | API Pipe Properties |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 39 months |
| Monetization | Paid | — |
| Best chart rank | **#199** | — |
| Size | 38 MB | 11 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Polemics Applications LLC](https://appshunter.io/developer/482504032) | [zhandos uakanov](https://appshunter.io/developer/625286817) |

## 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


### API Pipe Properties

[App page](https://appshunter.io/ios/app/api-pipe-properties/id1044718618)

**Features:** macOS Compatibility, Vision Pro 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 API Pipe Properties free?

API Pipe Properties costs $1.99, with no in-app purchases.

### Do Army Engineer Guide or API Pipe Properties have ads?

Neither Army Engineer Guide nor API Pipe Properties shows ads.

### Which is updated more often, Army Engineer Guide or API Pipe Properties?

Army Engineer Guide ships an update every 3 months, and API Pipe Properties every 39 months. Most recently, Army Engineer Guide was updated on September 12, 2026 and API Pipe Properties on September 4, 2026.

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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.*