# ISSEP Security Engineer Prep vs Don't Fret!

The clearest difference is update cadence: Don't Fret! at every 4 weeks against ISSEP Security Engineer Prep's every 3 months. ISSEP Security Engineer Prep's advantage is iOS requirement (15.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

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

ISSEP Security Engineer Prep ships an update every 3 months, Don't Fret! every 4 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ISSEP Security Engineer Prep | Don't Fret! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/dont-fret/id6772834301/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 weeks** |
| Monetization | — | Free |
| Size | 27 MB | 33 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Davy Raitt](https://appshunter.io/developer/1795318281) | [Timothy Baker](https://appshunter.io/developer/1795463839) |

## What reviewers say

### ISSEP Security Engineer Prep

[App page](https://appshunter.io/ios/app/issep-security-engineer-prep/id6759794872)

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

**In-app purchases:** none


### Don't Fret!

[App page](https://appshunter.io/ios/app/dont-fret/id6772834301)

This app helps guitarists of all levels master the fretboard by providing interactive drills. It offers customized sessions to improve note recognition without needing to look down, leading to faster and more confident playing.

**Highlights:** Interactive guitar neck diagram, Customizable session parameters, Instant feedback on answers, Progress tracking and stats, Optimized for iPhone and iPad

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

**In-app purchases:** none


## Frequently asked questions

### Is ISSEP Security Engineer Prep free?

ISSEP Security Engineer Prep is free to download, with no in-app purchases.

### Is Don't Fret! free?

Don't Fret! is free to download, with no in-app purchases.

### Do ISSEP Security Engineer Prep or Don't Fret! have ads?

Neither ISSEP Security Engineer Prep nor Don't Fret! shows ads.

### Which is updated more often, ISSEP Security Engineer Prep or Don't Fret!?

ISSEP Security Engineer Prep ships an update every 3 months, and Don't Fret! every 4 weeks. Most recently, ISSEP Security Engineer Prep was updated on November 5, 2026 and Don't Fret! on October 31, 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.*