# 情シスの教科書 vs CompTIA Security+·CySA+ Prep

The clearest difference is in-app purchases: 情シスの教科書 at none against CompTIA Security+·CySA+ Prep's 4. CompTIA Security+·CySA+ Prep's advantage is ads (none vs shown) and iOS requirement (15.1 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. CompTIA Security+·CySA+ Prep sells 4 one-off in-app purchases. 情シスの教科書 asks for nothing beyond the download.

情シスの教科書 ships an update fortnightly, CompTIA Security+·CySA+ Prep weekly. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | 情シスの教科書 | CompTIA Security+·CySA+ Prep |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Freemium | — |
| Size | 11 MB | 123 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yoshihiko Ishikawa](https://appshunter.io/developer/1895906673) | [CHOI SEONGMIN](https://appshunter.io/developer/6772332527) |

## What reviewers say

### 情シスの教科書

[App page](https://appshunter.io/ios/app/se/id6764761204)

This app serves as a practical guide for new IT support staff and single IT personnel. It covers daily tasks, troubleshooting common issues, and preparing for IT certifications. The app provides a roadmap for the first 90 days, detailed workflows for urgent problems, and tools for logging and reporting. It also includes IT fundamentals and practice exams.

**Highlights:** 90-day roadmap for new IT staff, Troubleshooting workflows for 24 common issues, Automated response logging and monthly summaries, EOL (End-of-Life) calendar for critical dates, IT fundamentals and SQL practice, IT Passport exam preparation with past questions

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

**In-app purchases:** none


### CompTIA Security+·CySA+ Prep

[App page](https://appshunter.io/ios/app/comptia-security-plus-cysa-plus-prep/id6799638740)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CompTIA Securi Add-on Discount | $2.49 | one-time |
| CompTIA CySA+  Add-on Discount | $2.49 | one-time |
| CompTIA CySA+ CS0-004 | $4.99 | one-time |
| Lifetime Access | $4.99 | one-time |


## Frequently asked questions

### Is 情シスの教科書 free?

情シスの教科書 is free to download, with no in-app purchases.

### Is CompTIA Security+·CySA+ Prep free?

CompTIA Security+·CySA+ Prep is free to download, with in-app purchases available.

### Do 情シスの教科書 or CompTIA Security+·CySA+ Prep have ads?

情シスの教科書 shows ads; CompTIA Security+·CySA+ Prep does not.

### Which is updated more often, 情シスの教科書 or CompTIA Security+·CySA+ Prep?

情シスの教科書 ships an update fortnightly, and CompTIA Security+·CySA+ Prep weekly. Most recently, 情シスの教科書 was updated on October 31, 2026 and CompTIA Security+·CySA+ Prep on November 10, 2026.

---

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