# DoD Systems Engineering vs NSO

The clearest difference is review sentiment: NSO at 100% against DoD Systems Engineering's 50%. NSO also leads on rating (5.0 vs 3.8) and device support (3 vs 1). DoD Systems Engineering's advantage is ratings volume (4 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

NSO holds the better App Store score, 5.0 against 3.8. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews point the same way: 50% of DoD Systems Engineering's written reviews are positive against 100% of NSO's.

## The numbers

| Metric | DoD Systems Engineering | NSO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (4 ratings)](https://appshunter.io/ios/app/dod-systems-engineering/id505317207/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/nso/id1129840213/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | — |
| Monetization | Free | Free |
| Size | 10 MB | 9 MB |
| Requires iOS | 26.0 | **8.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Russell Shannon](https://appshunter.io/developer/505317310) | [NATO Standardization Office](https://appshunter.io/developer/1129840212) |

## What reviewers say

### DoD Systems Engineering

[App page](https://appshunter.io/ios/app/dod-systems-engineering/id505317207)

This app serves as a pocket reference for the Department of Defense Systems Engineering Technical Review process. It offers definitions for nearly 250 acronyms, details on Technology Readiness Levels, and in-depth information on review phases and technical processes.

**Highlights:** Acronym lookup (250+ definitions), Technology Readiness Level definitions, Review information by phase, Phase details (Materiel Solutions Analysis to Operations & Support), Technical and technical management processes

**Features:** Vision Pro support

**In-app purchases:** none


### NSO

[App page](https://appshunter.io/ios/app/nso/id1129840213)

Access and download NATO Standards directly on your mobile device. Store documents for offline reading. This official app provides a convenient way to manage important standardization information.

**Highlights:** Browse NATO Standards, Download NATO Standards, Read offline, Mobile access

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DoD Systems Engineering free?

DoD Systems Engineering is free to download, with no in-app purchases.

### Is NSO free?

NSO is free to download, with no in-app purchases.

### Which has better reviews, DoD Systems Engineering or NSO?

NSO is rated higher. DoD Systems Engineering averages 3.8 out of 5 from 4 ratings, while NSO averages 5.0 from 1 ratings.

### Do DoD Systems Engineering or NSO have ads?

Neither DoD Systems Engineering nor NSO shows ads.

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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.*