# Selective Service System vs Trauma Notification Training

The clearest difference is rating: Selective Service System at 5.0 against Trauma Notification Training's 1.0. Selective Service System also leads on ratings volume (3 vs 1). Trauma Notification Training's advantage is iOS requirement (16.4 vs 18.6). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Selective Service System holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Selective Service System ships an update every 4 months, Trauma Notification Training every 6 months. The most recent releases landed on September 17, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Selective Service System | Trauma Notification Training |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/selective-service-system/id6445855725/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/trauma-notification-training/id6477400580/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 6 months |
| Monetization | Free | Free |
| Size | 55 MB | 42 MB |
| Requires iOS | 18.6 | **16.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Selective Service System](https://appshunter.io/developer/1674277870) | [Federal Bureau of Investigation](https://appshunter.io/developer/446158588) |

## What reviewers say

### 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


### Trauma Notification Training

[App page](https://appshunter.io/ios/app/trauma-notification-training/id6477400580)

Learn to deliver trauma notifications with professionalism, dignity, and compassion. This app offers a comprehensive overview of best practices for sensitive communication.

**Highlights:** Professional trauma notification delivery, Dignified communication techniques, Compassionate interaction guidance, Comprehensive overview of best practices

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Selective Service System free?

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

### Is Trauma Notification Training free?

Trauma Notification Training is free to download, with no in-app purchases.

### Which has better reviews, Selective Service System or Trauma Notification Training?

Selective Service System is rated higher. Selective Service System averages 5.0 out of 5 from 3 ratings, while Trauma Notification Training averages 1.0 from 1 ratings.

### Do Selective Service System or Trauma Notification Training have ads?

Neither Selective Service System nor Trauma Notification Training shows ads.

### Which is updated more often, Selective Service System or Trauma Notification Training?

Selective Service System ships an update every 4 months, and Trauma Notification Training every 6 months. Most recently, Selective Service System was updated on September 17, 2026 and Trauma Notification Training on September 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.*