# KnowThyHistory vs US Constitution Pro

The clearest difference is price: KnowThyHistory at Free against US Constitution Pro's $3.99. US Constitution Pro's advantage is in-app purchases (none vs 6). On ads, device support and iOS requirement there is nothing between them.

KnowThyHistory is free to download; US Constitution Pro costs $3.99 up front. KnowThyHistory sells 5 one-off in-app purchases. US Constitution Pro asks for nothing beyond the download.

## The numbers

| Metric | KnowThyHistory | US Constitution Pro |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 22 months | — |
| Size | 42 MB | 3 MB |
| Requires iOS | **14** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Robert Briggs](https://appshunter.io/developer/1252199859) | [帆 胡](https://appshunter.io/developer/1699269059) |

## What reviewers say

### KnowThyHistory

[App page](https://appshunter.io/ios/app/knowthyhistory/id1252199860)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Plan | $8.99 | one-time |
| Unlimited | $14.99 | one-time |
| Unlimited Plan | $14.99 | one-time |
| Premium | $45.99 | one-time |
| Premium Plan | $45.99 | one-time |


### US Constitution Pro

[App page](https://appshunter.io/ios/app/us-constitution-pro/id6753333956)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KnowThyHistory free?

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

### Is US Constitution Pro free?

US Constitution Pro costs $3.99, with no in-app purchases.

### Do KnowThyHistory or US Constitution Pro have ads?

Neither KnowThyHistory nor US Constitution Pro shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*