# DOI OSH Safety vs Selective Service System

The clearest difference is ratings volume: Selective Service System at 3 against DOI OSH Safety's 1. On price, rating, update cadence and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for DOI OSH Safety against 5.0 for Selective Service System. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

DOI OSH Safety ships an update every 3 months, Selective Service System every 4 months. The most recent releases landed on July 18, 2026 and July 24, 2026 respectively.

## The numbers

| Metric | DOI OSH Safety | Selective Service System |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/doi-osh-safety/id1527456645/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/selective-service-system/id6445855725/reviews) |
| Number of ratings | 1 | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Free | Free |
| Size | 56 MB | 55 MB |
| Requires iOS | 18.6 | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [U.S. Department of the Interior](https://appshunter.io/developer/1498505970) | [Selective Service System](https://appshunter.io/developer/1674277870) |

## What reviewers say

### DOI OSH Safety

[App page](https://appshunter.io/ios/app/doi-osh-safety/id1527456645)

This app offers policy information, tools, and resources for employees and contractors to promote workplace safety. It includes assessments, checklists, and articles to educate users on procedures for protecting lives and property.

**Highlights:** Policy information, Safety tools and resources, Assessments and checklists, How-to articles, Healthful procedure education

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

**In-app purchases:** none


### Selective Service System

[App page](https://appshunter.io/ios/app/selective-service-system/id6445855725)

This app provides resources for volunteers involved in national defense. It offers an electronic library with interactive guides, contact information, FAQs, newsletters, multimedia, and checklists to support their roles in local communities.

**Highlights:** Interactive guides, Contact information, Frequently Asked Questions, Newsletters, Multimedia resources, Checklist archive

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

**In-app purchases:** none


## Frequently asked questions

### Is DOI OSH Safety free?

DOI OSH Safety is free to download, with no in-app purchases.

### Is Selective Service System free?

Selective Service System is free to download, with no in-app purchases.

### Which has better reviews, DOI OSH Safety or Selective Service System?

DOI OSH Safety and Selective Service System are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.

### Do DOI OSH Safety or Selective Service System have ads?

Neither DOI OSH Safety nor Selective Service System shows ads.

### Which is updated more often, DOI OSH Safety or Selective Service System?

DOI OSH Safety ships an update every 3 months, and Selective Service System every 4 months. Most recently, DOI OSH Safety was updated on July 18, 2026 and Selective Service System on July 24, 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.*