# ISSEP Security Engineer Prep vs Piano AI

The clearest difference is in-app purchases: ISSEP Security Engineer Prep at none against Piano AI's 2. ISSEP Security Engineer Prep also leads on iOS requirement (15.0 vs 18.6). Piano AI's advantage is update cadence (weekly vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Piano AI sells 2 in-app purchases, starting at $9.99 per month. ISSEP Security Engineer Prep asks for nothing beyond the download.

ISSEP Security Engineer Prep ships an update every 3 months, Piano AI weekly. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ISSEP Security Engineer Prep | Piano AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/piano-ai/id6782520019/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | — | Freemium |
| Size | 27 MB | 262 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Davy Raitt](https://appshunter.io/developer/1795318281) | [Piano Ai LLC](https://appshunter.io/developer/6782520021) |

## 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


### Piano AI

[App page](https://appshunter.io/ios/app/piano-ai/id6782520019)

This app acts as a personal piano teacher, offering note-by-note guidance and instant feedback on your playing. It helps you build a practice habit with two distinct play modes and supports learning with or without a physical keyboard.

**Highlights:** Note-by-note guidance, Instant feedback on notes and rhythm, Practice Mode with tempo control, Rhythm Mode for timing and reflexes, On-screen keyboard and MIDI support, Growing song library, Daily practice plans and progress tracking

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $9.99 | per month |
| Annual | $79.99 | per year |


## Frequently asked questions

### Is ISSEP Security Engineer Prep free?

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

### Is Piano AI free?

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

### Do ISSEP Security Engineer Prep or Piano AI have ads?

Neither ISSEP Security Engineer Prep nor Piano AI shows ads.

### Which is updated more often, ISSEP Security Engineer Prep or Piano AI?

ISSEP Security Engineer Prep ships an update every 3 months, and Piano AI weekly. Most recently, ISSEP Security Engineer Prep was updated on October 7, 2026 and Piano AI 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.*