# U.S. Airlines, Past & Present vs Army Engineer Guide

The clearest difference is update cadence: Army Engineer Guide at every 3 months against U.S. Airlines, Past & Present's every 13 months. Army Engineer Guide also leads on review sentiment (33% vs 22%) and iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and monetization model there is nothing between them.

U.S. Airlines, Past & Present costs $0.99 and Army Engineer Guide $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

U.S. Airlines, Past & Present ships an update every 13 months, Army Engineer Guide every 3 months. Both last shipped on October 22, 2026.

## The numbers

| Metric | U.S. Airlines, Past & Present | Army Engineer Guide |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | **[2.0 (4 ratings)](https://appshunter.io/ios/app/us-airlines-past-and-present/id449545526/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 22.2% of reviews | **33.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 3 months** |
| Monetization | Paid | Paid |
| Size | 11 MB | 38 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [iStuff](https://appshunter.io/developer/369606386) | [Polemics Applications LLC](https://appshunter.io/developer/482504032) |

## What reviewers say

### U.S. Airlines, Past & Present

[App page](https://appshunter.io/ios/app/us-airlines-past-and-present/id449545526)

Discover a comprehensive directory of 237 U.S. passenger airlines, both current and historical. Explore the lineage of each airline and their successors, with information dating back to 1924.

**Highlights:** Directory of 237 U.S. airlines, Past and present airlines, Trace airline successors, Historical data back to 1924

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Army Engineer Guide

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

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


## Frequently asked questions

### Is U.S. Airlines, Past & Present free?

U.S. Airlines, Past & Present costs $0.99, with no in-app purchases.

### Is Army Engineer Guide free?

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

### Do U.S. Airlines, Past & Present or Army Engineer Guide have ads?

Neither U.S. Airlines, Past & Present nor Army Engineer Guide shows ads.

### Which is updated more often, U.S. Airlines, Past & Present or Army Engineer Guide?

U.S. Airlines, Past & Present ships an update every 13 months, and Army Engineer Guide every 3 months. Most recently, U.S. Airlines, Past & Present was updated on October 22, 2026 and Army Engineer Guide on October 22, 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.*