# NCSF CPT Exam by Rocket Prep vs Probability Practice

The clearest difference is in-app purchases: Probability Practice at none against NCSF CPT Exam by Rocket Prep's 6. Probability Practice also leads on iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. NCSF CPT Exam by Rocket Prep sells 6 in-app purchases, starting at $7.99 per 7 days. Probability Practice asks for nothing beyond the download.

## The numbers

| Metric | NCSF CPT Exam by Rocket Prep | Probability Practice |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 months | — |
| Size | 38 MB | 31 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Darya Pyzhyk](https://appshunter.io/developer/1799009188) | [Manish Kumar](https://appshunter.io/developer/1854995154) |

## What reviewers say

### NCSF CPT Exam by Rocket Prep

[App page](https://appshunter.io/ios/app/ncsf-cpt-exam-by-rocket-prep/id6752014172)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CPT Weekly Full Access | $7.99 | per 7 days |
| CPT Monthly Full Access | $17.99 | per month |
| CPT Monthly Full Access | $17.99 | per month |
| NCSF_CPT_mock_tries_1 | $4.99 | one-time |
| NCSF_CPT_mock_tries_3 | $9.99 | one-time |
| NCSF_CPT_mock_tries_5 | $14.99 | one-time |


### Probability Practice

[App page](https://appshunter.io/ios/app/probability-practice/id6760345315)

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

**In-app purchases:** none


## Frequently asked questions

### Is NCSF CPT Exam by Rocket Prep free?

NCSF CPT Exam by Rocket Prep is free to download, with in-app purchases available.

### Is Probability Practice free?

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

### Do NCSF CPT Exam by Rocket Prep or Probability Practice have ads?

Neither NCSF CPT Exam by Rocket Prep nor Probability Practice shows ads.

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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.*