# CS Pro Note vs Blue Penguin Linux Prep

The clearest difference is price: CS Pro Note at Free against Blue Penguin Linux Prep's $1.99. CS Pro Note also leads on iOS requirement (13.0 vs 15.0). Blue Penguin Linux Prep's advantage is in-app purchases (none vs 1) and update cadence (fortnightly vs monthly). On ads and device support there is nothing between them.

CS Pro Note is free to download; Blue Penguin Linux Prep costs $1.99 up front. CS Pro Note sells 1 one-off in-app purchase. Blue Penguin Linux Prep asks for nothing beyond the download.

CS Pro Note ships an update monthly, Blue Penguin Linux Prep fortnightly. The most recent releases landed on October 8, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | CS Pro Note | Blue Penguin Linux Prep |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Size | 60 MB | 21 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jeffery Galen Reed](https://appshunter.io/developer/1819964083) | [Leason Rykaart](https://appshunter.io/developer/1542598308) |

## What reviewers say

### CS Pro Note

[App page](https://appshunter.io/ios/app/cs-pro-note/id6749539002)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CS Pro Note Lifetime | $7.99 | one-time |


### Blue Penguin Linux Prep

[App page](https://appshunter.io/ios/app/blue-penguin-linux-prep/id6789564914)

**In-app purchases:** none


## Frequently asked questions

### Is CS Pro Note free?

CS Pro Note is free to download, with in-app purchases available.

### Is Blue Penguin Linux Prep free?

Blue Penguin Linux Prep costs $1.99, with no in-app purchases.

### Do CS Pro Note or Blue Penguin Linux Prep have ads?

Neither CS Pro Note nor Blue Penguin Linux Prep shows ads.

### Which is updated more often, CS Pro Note or Blue Penguin Linux Prep?

CS Pro Note ships an update monthly, and Blue Penguin Linux Prep fortnightly. Most recently, CS Pro Note was updated on October 8, 2026 and Blue Penguin Linux Prep on October 6, 2026.

---

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