# CST Exam Prep vs HAM

The clearest difference is in-app purchases: HAM at none against CST Exam Prep's 5. HAM also leads on ads (none vs shown). CST Exam Prep's advantage is update cadence (every 5 days vs every 3 weeks) and iOS requirement (15.1 vs 26.0). On price and device support there is nothing between them.

Both are free to download. CST Exam Prep sells 5 in-app purchases, starting at $5.99 per 7 days. HAM asks for nothing beyond the download.

CST Exam Prep ships an update every 5 days, HAM every 3 weeks. The most recent releases landed on October 15, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | CST Exam Prep | HAM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Size | 47 MB | 11 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ilia Chernikov](https://appshunter.io/developer/1818071113) | [Juan Eduardo Huke](https://appshunter.io/developer/1860414223) |

## What reviewers say

### CST Exam Prep

[App page](https://appshunter.io/ios/app/cst-exam-prep/id6755035712)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $5.99 | per 7 days |
| Month | $9.99 | per month |
| 3 Month | $19.99 | per 3 months |
| 1 Month | $29.99 | per month |
| 3 Month | $59.99 | per 3 months |


### HAM

[App page](https://appshunter.io/ios/app/ham-nat-prep/id6759814075)

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

**In-app purchases:** none


## Frequently asked questions

### Is CST Exam Prep free?

CST Exam Prep is free to download, with in-app purchases available.

### Is HAM free?

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

### Do CST Exam Prep or HAM have ads?

CST Exam Prep shows ads; HAM does not.

### Which is updated more often, CST Exam Prep or HAM?

CST Exam Prep ships an update every 5 days, and HAM every 3 weeks. Most recently, CST Exam Prep was updated on October 15, 2026 and HAM on October 13, 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.*