# SCS Security Specialty Prep vs OposSCS

The clearest difference is ads: SCS Security Specialty Prep at none against OposSCS's shown. SCS Security Specialty Prep also leads on update cadence (every 5 days vs every 3 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. SCS Security Specialty Prep sells 1 one-off in-app purchase and OposSCS sells 1 in-app purchase, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

SCS Security Specialty Prep ships an update every 5 days, OposSCS every 3 weeks. The most recent releases landed on October 31, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | SCS Security Specialty Prep | OposSCS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Size | 163 MB | 48 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [CHOI SEONGMIN](https://appshunter.io/developer/6772332527) | [Maider Fernandez de Aranguiz Gonzalez](https://appshunter.io/developer/6786927003) |

## What reviewers say

### SCS Security Specialty Prep

[App page](https://appshunter.io/ios/app/scs-security-specialty-prep/id6775577082)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SCS-C03 Lifetime | $4.99 | one-time |


### OposSCS

[App page](https://appshunter.io/ios/app/oposscs/id6786927001)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OposSCS PRO | $3.99 | per month |


## Frequently asked questions

### Is SCS Security Specialty Prep free?

SCS Security Specialty Prep is free to download, with in-app purchases available.

### Is OposSCS free?

OposSCS is free to download, with in-app purchases available.

### Do SCS Security Specialty Prep or OposSCS have ads?

OposSCS shows ads; SCS Security Specialty Prep does not.

### Which is updated more often, SCS Security Specialty Prep or OposSCS?

SCS Security Specialty Prep ships an update every 5 days, and OposSCS every 3 weeks. Most recently, SCS Security Specialty Prep was updated on October 31, 2026 and OposSCS on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*