# Keystone Exam Prep vs MathMemoAR

The clearest difference is iOS requirement: Keystone Exam Prep at 15.5 against MathMemoAR's 18.6. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Keystone Exam Prep sells 10 one-off in-app purchases and MathMemoAR sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Keystone Exam Prep | MathMemoAR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/keystone-exam-prep-live-app/id6465206824/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 145 MB | 12 MB |
| Requires iOS | **15.5** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Online Learning](https://appshunter.io/developer/1790866777) | [Frank Otto](https://appshunter.io/developer/1769347442) |

## What reviewers say

### Keystone Exam Prep

[App page](https://appshunter.io/ios/app/keystone-exam-prep-live-app/id6465206824)

Prepare for competitive exams with extensive mock tests and practice questions. Access daily current affairs, quizzes, and detailed performance analysis. Offers multilingual support for a personalized learning experience.

**Highlights:** Mock tests for competitive exams, 50,000+ practice questions, Daily current affairs, Daily free quizzes, Detailed performance analysis, Multilingual support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Package - 18900 | $199.99 | one-time |
| Package - 19900 | $199.99 | one-time |
| Package - 21900 | $199.99 | one-time |
| Package - 27900 | $299.99 | one-time |
| Package - 39900 | $399.99 | one-time |
| Package - 44900 | $449.99 | one-time |
| Package - 54900 | $499.99 | one-time |
| Package - 69900 | $699.99 | one-time |
| Package - 79900 | $799.99 | one-time |
| Package - 89900 | $899.99 | one-time |


### MathMemoAR

[App page](https://appshunter.io/ios/app/mathmemoar/id6758889718)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - All Formulas | $2.99 | one-time |


## Frequently asked questions

### Is Keystone Exam Prep free?

Keystone Exam Prep is free to download, with in-app purchases available.

### Is MathMemoAR free?

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

### Do Keystone Exam Prep or MathMemoAR have ads?

Neither Keystone Exam Prep nor MathMemoAR 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.*