# Introduction to Population vs EPPP Exam by Rocket Prep 2026

The clearest difference is in-app purchases: Introduction to Population at none against EPPP Exam by Rocket Prep 2026's 8. Introduction to Population also leads on iOS requirement (12.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. EPPP Exam by Rocket Prep 2026 sells 8 in-app purchases, starting at $8.99 per 7 days. Introduction to Population asks for nothing beyond the download.

## The numbers

| Metric | Introduction to Population | EPPP Exam by Rocket Prep 2026 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 7 months |
| Size | 22 MB | 48 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Science Education Institute](https://appshunter.io/developer/1439710468) | [Darya Pyzhyk](https://appshunter.io/developer/1799009188) |

## What reviewers say

### Introduction to Population

[App page](https://appshunter.io/ios/app/introduction-to-population/id6738341805)

**Features:** macOS Compatibility

**In-app purchases:** none


### EPPP Exam by Rocket Prep 2026

[App page](https://appshunter.io/ios/app/eppp-exam-by-rocket-prep-2026/id6751283549)

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| EPPP Weekly Full Access | $8.99 | per 7 days |
| EPPP Monthly Full Access | $22.99 | per month |
| EPPP Monthly Full Access | $22.99 | per month |
| EPPP Quarterly Full Access | $49.99 | per 3 months |
| EPPP Quarterly Full Access | $49.99 | per 3 months |
| EPPP_mock_tries_1 | $4.99 | one-time |
| EPPP_mock_tries_3 | $9.99 | one-time |
| EPPP_mock_tries_5 | $14.99 | one-time |


## Frequently asked questions

### Is Introduction to Population free?

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

### Is EPPP Exam by Rocket Prep 2026 free?

EPPP Exam by Rocket Prep 2026 is free to download, with in-app purchases available.

### Do Introduction to Population or EPPP Exam by Rocket Prep 2026 have ads?

Neither Introduction to Population nor EPPP Exam by Rocket Prep 2026 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.*