# PD vs AP Physics 1

The clearest difference is review sentiment: PD at 100% against AP Physics 1's 0%. PD also leads on ratings volume (22 vs 3) and iOS requirement (10.0 vs 15.6). AP Physics 1's advantage is ads (none vs shown) and rating (5.0 vs 4.6). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. PD sells 3 one-off in-app purchases and AP Physics 1 sells 4 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

AP Physics 1 holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: PD has 22 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 100% of PD's written reviews are positive against 0% of AP Physics 1's, so the app with the better star average is not the one people write more warmly about.

## The numbers

| Metric | PD | AP Physics 1 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (22 ratings)](https://appshunter.io/ios/app/pd-eyes/id1495662925/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ap-physics-1-exam-test-prep/id1553006619/reviews)** |
| Number of ratings | **22** | 3 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | — | Every 6 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 131 MB | 51 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Peter Dubrule](https://appshunter.io/developer/1495662924) | [Expanded Apps](https://appshunter.io/developer/313709778) |

## What reviewers say

### PD

[App page](https://appshunter.io/ios/app/pd-eyes/id1495662925)

This app helps students and professionals improve public speaking by practicing eye contact. It simulates an audience that reacts to your engagement, guiding you to connect visually and build confidence.

**Highlights:** Simulated audience interaction, Eye contact practice, Confidence building, Anxiety reduction, Audience engagement training

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 20 Coins | $0.99 | one-time |
| 75 Coins | $1.99 | one-time |
| 100 Coins | $2.99 | one-time |


### AP Physics 1

[App page](https://appshunter.io/ios/app/ap-physics-1-exam-test-prep/id1553006619)

Prepare for the AP Physics 1 exam with 500 practice questions that mimic the actual test's format and difficulty. Detailed explanations are provided for each answer, and interactive study modes help track your progress. Access all questions with a subscription.

**Highlights:** 500 AP-style questions, Detailed answer explanations, Simulates real AP exam, Study, Timed Exam, and Bookmark modes, Progress tracking, iCloud save functionality

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Week | $6.99 | per 7 days |
| 1 Month | $17.99 | per month |
| 1 Year | $69.99 | per year |
| AP Physics 1 | $15.99 | one-time |


## Frequently asked questions

### Is PD free?

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

### Is AP Physics 1 free?

AP Physics 1 is free to download, with in-app purchases available.

### Which has better reviews, PD or AP Physics 1?

AP Physics 1 is rated higher. PD averages 4.6 out of 5 from 22 ratings, while AP Physics 1 averages 5.0 from 3 ratings.

### Do PD or AP Physics 1 have ads?

PD shows ads; AP Physics 1 does not.

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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.*