# CLEP Natural Science Prep vs Information Systems Test Prep

The clearest difference is price: Information Systems Test Prep at Free against CLEP Natural Science Prep's $1.99. Information Systems Test Prep also leads on iOS requirement (15.1 vs 18.0). CLEP Natural Science Prep's advantage is in-app purchases (none vs 9). On update cadence, ads and device support there is nothing between them.

Information Systems Test Prep is free to download; CLEP Natural Science Prep costs $1.99 up front. Information Systems Test Prep sells 9 in-app purchases, starting at $5.99 per 7 days. CLEP Natural Science Prep asks for nothing beyond the download.

CLEP Natural Science Prep ships an update every 5 months, Information Systems Test Prep every 7 months. The most recent releases landed on August 13, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | CLEP Natural Science Prep | Information Systems Test Prep |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 7 months |
| Monetization | Paid | — |
| Size | 3 MB | 39 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Feraco media Inc.](https://appshunter.io/developer/497957884) | [YAUHEN BAHDANOVICH](https://appshunter.io/developer/1711932790) |

## What reviewers say

### CLEP Natural Science Prep

[App page](https://appshunter.io/ios/app/clep-natural-science-prep/id955022460)

Prepare for the CLEP Natural Sciences exam with practice tests and flashcards. This app helps you master key concepts for college credit, saving you time and tuition costs. Study offline anytime, anywhere.

**Highlights:** Realistic practice exams, Vocabulary flashcards, Offline study capability, Progress tracking, Covers all exam topics

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

**In-app purchases:** none


### Information Systems Test Prep

[App page](https://appshunter.io/ios/app/information-systems-test-prep/id6480013278)

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CLEP Info Systems Weekly | $5.99 | per 7 days |
| CLEP Info Sys Monthly Access | $12.99 | per month |
| CLEP Info Systems Monthly | $14.99 | per month |
| IS Quarterly Full Access | $55.99 | per 3 months |
| IS Quarterly Full Access | $59.99 | per 3 months |
| IS Semiannual Full Access | $75.99 | per 6 months |
| IS Semiannual Full Access | $79.99 | per 6 months |
| IS Annual Full Access | $109.99 | per year |
| IS Annual Full Access | $119.99 | per year |


## Frequently asked questions

### Is CLEP Natural Science Prep free?

CLEP Natural Science Prep costs $1.99, with no in-app purchases.

### Is Information Systems Test Prep free?

Information Systems Test Prep is free to download, with in-app purchases available.

### Do CLEP Natural Science Prep or Information Systems Test Prep have ads?

Neither CLEP Natural Science Prep nor Information Systems Test Prep shows ads.

### Which is updated more often, CLEP Natural Science Prep or Information Systems Test Prep?

CLEP Natural Science Prep ships an update every 5 months, and Information Systems Test Prep every 7 months. Most recently, CLEP Natural Science Prep was updated on August 13, 2026 and Information Systems Test Prep on September 11, 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.*