# Linux Basics vs LetsDefend

The clearest difference is review sentiment: Linux Basics at 77% against LetsDefend's 9%. Linux Basics also leads on rating (4.5 vs 2.5) and in-app purchases (none vs 2). LetsDefend's advantage is update cadence (every 2 weeks vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. LetsDefend sells 2 in-app purchases, starting at $12.99 per month. Linux Basics asks for nothing beyond the download.

Linux Basics holds the better App Store score, 4.5 against 2.5. That said, the two scores are not equally well evidenced: Linux Basics has 66 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 77% of Linux Basics's written reviews are positive against 9% of LetsDefend's.

Linux Basics ships an update every 2 months, LetsDefend every 2 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Linux Basics | LetsDefend |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (66 ratings)](https://appshunter.io/ios/app/linux-basics/id1643338147/reviews)** | [2.5 (4 ratings)](https://appshunter.io/ios/app/letsdefend/id6741323626/reviews) |
| Number of ratings | **66** | 4 |
| Positive reviews | **76.7% of reviews** | 9.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 39 MB | 98 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gabi Karasin](https://appshunter.io/developer/1643338149) | [LetsDefend](https://appshunter.io/developer/1793754609) |

## What reviewers say

### Linux Basics

[App page](https://appshunter.io/ios/app/linux-basics/id1643338147)

Learn essential Linux commands and concepts through an interactive, gamified mobile experience. Gain practical, day-to-day knowledge and discover useful tips presented in a fun and engaging format.

**Highlights:** Interactive learning, Gamified approach, Practical daily knowledge, Cool tips, Easy to learn

**Features:** macOS Compatibility

**In-app purchases:** none


### LetsDefend

[App page](https://appshunter.io/ios/app/letsdefend/id6741323626)

Learn cybersecurity with interactive courses and hands-on simulations. Protect against digital threats, join a global community, and advance your career. Master threat detection and analysis with expert guidance.

**Highlights:** Interactive cybersecurity courses, Hands-on threat simulations, Threat detection tools and techniques, Community and expert support, Customizable learning paths, Mobile learning platform

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP+ | $12.99 | per month |
| VIP+ Annual | $89.99 | per year |

**What reviewers like**

- 💡 Structured learning with quizzes and labs
- 👍 Certification opportunities for VIP users

**What reviewers complain about**

- 🐛 Login issues - unable to log in with existing accounts
- 🐛 App not recognizing VIP subscription
- 🐛 Ads preventing progress through content
- 🔒 Lack of trust in company due to login problems

**Reported bugs**

- Login credentials not working in app
- App not recognizing VIP subscription
- Ads blocking progress through content

**Requested features**

- Ability to log in with existing accounts
- Seamless integration between app and website


## Frequently asked questions

### Is Linux Basics free?

Linux Basics is free to download, with no in-app purchases.

### Is LetsDefend free?

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

### Which has better reviews, Linux Basics or LetsDefend?

Linux Basics is rated higher. Linux Basics averages 4.5 out of 5 from 66 ratings, while LetsDefend averages 2.5 from 4 ratings.

### Do Linux Basics or LetsDefend have ads?

LetsDefend shows ads; Linux Basics does not.

### Which is updated more often, Linux Basics or LetsDefend?

Linux Basics ships an update every 2 months, and LetsDefend every 2 weeks. Most recently, Linux Basics was updated on October 24, 2026 and LetsDefend on October 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.*