# Memory Math vs SSAT ISEE Test Prep

The clearest difference is price: SSAT ISEE Test Prep at Free against Memory Math's $2.99. SSAT ISEE Test Prep also leads on update cadence (every 2 months vs every 38 months) and iOS requirement (16.6 vs 26.0). Memory Math's advantage is in-app purchases (none vs 3). On ads and device support there is nothing between them.

SSAT ISEE Test Prep is free to download; Memory Math costs $2.99 up front. SSAT ISEE Test Prep sells 3 in-app purchases, starting at $0.99 per 7 days. Memory Math asks for nothing beyond the download.

Memory Math ships an update every 38 months, SSAT ISEE Test Prep every 2 months. The most recent releases landed on October 5, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Memory Math | SSAT ISEE Test Prep |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[4.4 (5 ratings)](https://appshunter.io/ios/app/ssat-isee-test-prep-practice/id6751311672/reviews)** |
| Number of ratings | — | **5** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 2 months** |
| Monetization | — | Free with in-app purchases |
| Size | 6 MB | 22 MB |
| Requires iOS | 26.0 | **16.6** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Sigma Sky, LLC](https://appshunter.io/developer/320947305) | [iAPPSSTUDIO](https://appshunter.io/developer/1830642259) |

## What reviewers say

### Memory Math

[App page](https://appshunter.io/ios/app/memory-math-plus-x/id1482272700)

**Features:** macOS Compatibility

**In-app purchases:** none


### SSAT ISEE Test Prep

[App page](https://appshunter.io/ios/app/ssat-isee-test-prep-practice/id6751311672)

Prepare for the SSAT and ISEE entrance exams with a comprehensive study guide. Features over 750 practice questions, full-length exams, and detailed explanations to help you master challenging concepts and track your progress effectively.

**Highlights:** Over 750 practice questions, Full-length practice exams, Custom test builder, Detailed answer explanations, Progress tracking and analytics, Offline access, Study reminders

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Access | $0.99 | per 7 days |
| Yearly Subscription | $29.99 | per year |
| Lifetime Access | $7.99 | one-time |


## Frequently asked questions

### Is Memory Math free?

Memory Math costs $2.99, with no in-app purchases.

### Is SSAT ISEE Test Prep free?

SSAT ISEE Test Prep is free to download, with in-app purchases available.

### Do Memory Math or SSAT ISEE Test Prep have ads?

Neither Memory Math nor SSAT ISEE Test Prep shows ads.

### Which is updated more often, Memory Math or SSAT ISEE Test Prep?

Memory Math ships an update every 38 months, and SSAT ISEE Test Prep every 2 months. Most recently, Memory Math was updated on October 5, 2026 and SSAT ISEE Test Prep on October 8, 2026.

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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.*