# Chemistry Dictionary vs Physics Questions

The clearest difference is in-app purchases: Chemistry Dictionary at none against Physics Questions's 9. Chemistry Dictionary also leads on ads (none vs shown) and iOS requirement (8.0 vs 12.0). On price and device support there is nothing between them.

Both are free to download. Physics Questions sells 9 one-off in-app purchases. Chemistry Dictionary asks for nothing beyond the download.

## The numbers

| Metric | Chemistry Dictionary | Physics Questions |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 4 days |
| Size | 55 MB | 20 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Santosh Mishra](https://appshunter.io/developer/1187693169) | [Michael Todd](https://appshunter.io/developer/1211079532) |

## What reviewers say

### Chemistry Dictionary

[App page](https://appshunter.io/ios/app/chemistry-dictionary-concepts-terms/id1253456847)

**In-app purchases:** none


### Physics Questions

[App page](https://appshunter.io/ios/app/physics-questions/id1616961005)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Electricity Questions | $1.99 | one-time |
| Electronics Questions | $1.99 | one-time |
| Electromagnetism Questions | $1.99 | one-time |
| Force & Energy Questions | $1.99 | one-time |
| Motion Questions | $1.99 | one-time |
| Optics Questions | $1.99 | one-time |
| Radioactivity & Thermodynamics | $1.99 | one-time |
| Special Relativity Questions | $1.99 | one-time |
| Waves & Particles Questions | $1.99 | one-time |


## Frequently asked questions

### Is Chemistry Dictionary free?

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

### Is Physics Questions free?

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

### Do Chemistry Dictionary or Physics Questions have ads?

Physics Questions shows ads; Chemistry Dictionary 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.*