# CompTIA Linux+ Exam Pro vs PhlashCards Security Test Prep

The clearest difference is update cadence: CompTIA Linux+ Exam Pro at every 5 weeks against PhlashCards Security Test Prep's every 3 months. CompTIA Linux+ Exam Pro also leads on iOS requirement (16.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. CompTIA Linux+ Exam Pro sells 2 in-app purchases, starting at $7.99 per month and PhlashCards Security Test Prep sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

CompTIA Linux+ Exam Pro ships an update every 5 weeks, PhlashCards Security Test Prep every 3 months. The most recent releases landed on September 21, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | CompTIA Linux+ Exam Pro | PhlashCards Security Test Prep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Size | 13 MB | 64 MB |
| Requires iOS | **16.0** | 18.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Cargo Teleport Inc](https://appshunter.io/developer/1761832181) | [Hodge Podgin LLC](https://appshunter.io/developer/1873814194) |

## What reviewers say

### CompTIA Linux+ Exam Pro

[App page](https://appshunter.io/ios/app/comptia-linux-plus-exam-pro/id6680151360)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly subscription | $7.99 | per month |
| Lifetime version | $19.99 | one-time |


### PhlashCards Security Test Prep

[App page](https://appshunter.io/ios/app/phlashcards-security-test-prep/id6759810555)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Security+ Premium | $14.99 | one-time |
| Pentest+ Premium | $14.99 | one-time |
| SecAI+ Premium | $19.99 | one-time |
| CISSP Premium | $19.99 | one-time |


## Frequently asked questions

### Is CompTIA Linux+ Exam Pro free?

CompTIA Linux+ Exam Pro is free to download, with in-app purchases available.

### Is PhlashCards Security Test Prep free?

PhlashCards Security Test Prep is free to download, with in-app purchases available.

### Do CompTIA Linux+ Exam Pro or PhlashCards Security Test Prep have ads?

Neither CompTIA Linux+ Exam Pro nor PhlashCards Security Test Prep shows ads.

### Which is updated more often, CompTIA Linux+ Exam Pro or PhlashCards Security Test Prep?

CompTIA Linux+ Exam Pro ships an update every 5 weeks, and PhlashCards Security Test Prep every 3 months. Most recently, CompTIA Linux+ Exam Pro was updated on September 21, 2026 and PhlashCards Security Test Prep on October 8, 2026.

---

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