# AAISM AI Security Exam Prep vs Preplexity

The clearest difference is in-app purchases: AAISM AI Security Exam Prep at none against Preplexity's 2. AAISM AI Security Exam Prep also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). Preplexity's advantage is update cadence (weekly vs monthly). On price and ads there is nothing between them.

Both are free to download. Preplexity sells 2 in-app purchases, starting at $6.99 per month. AAISM AI Security Exam Prep asks for nothing beyond the download.

AAISM AI Security Exam Prep ships an update monthly, Preplexity weekly. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | AAISM AI Security Exam Prep | Preplexity |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Size | 27 MB | 54 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Davy Raitt](https://appshunter.io/developer/1795318281) | [RADU TIBERIU MORARU](https://appshunter.io/developer/6784187170) |

## What reviewers say

### AAISM AI Security Exam Prep

[App page](https://appshunter.io/ios/app/aaism-ai-security-exam-prep/id6761647696)

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

**In-app purchases:** none


### Preplexity

[App page](https://appshunter.io/ios/app/preplexity-it-cert-exam-prep/id6784187167)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Preplexity Pro Monthly | $6.99 | per month |
| Preplexity Pro Annual | $44.99 | per year |


## Frequently asked questions

### Is AAISM AI Security Exam Prep free?

AAISM AI Security Exam Prep is free to download, with no in-app purchases.

### Is Preplexity free?

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

### Do AAISM AI Security Exam Prep or Preplexity have ads?

Neither AAISM AI Security Exam Prep nor Preplexity shows ads.

### Which is updated more often, AAISM AI Security Exam Prep or Preplexity?

AAISM AI Security Exam Prep ships an update monthly, and Preplexity weekly. Most recently, AAISM AI Security Exam Prep was updated on October 10, 2026 and Preplexity 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.*