# Stack Memory vs CHS Exam Prep

The clearest difference is in-app purchases: Stack Memory at none against CHS Exam Prep's 6. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. CHS Exam Prep sells 6 in-app purchases, starting at $7.99 per 7 days. Stack Memory asks for nothing beyond the download.

## The numbers

| Metric | Stack Memory | CHS Exam Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (8 ratings)](https://appshunter.io/ios/app/stack-memory/id6502915915/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 72.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 days | — |
| Monetization | Free | — |
| Size | 10 MB | 21 MB |
| Requires iOS | 17.2 | **17.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [CHRIS HODGE](https://appshunter.io/developer/903916651) | [Forwa Elade Wunde](https://appshunter.io/developer/1685241344) |

## What reviewers say

### Stack Memory

[App page](https://appshunter.io/ios/app/stack-memory/id6502915915)

This educational tool aids magicians in mastering mnemonic and Aronson stacking techniques. It provides a focused environment for practicing and reinforcing complex card memorization methods.

**Highlights:** Mnemonic stacking practice, Aronson stacking practice, Card memorization aid, Magician study tool, Focused learning environment

**Features:** macOS Compatibility

**In-app purchases:** none


### CHS Exam Prep

[App page](https://appshunter.io/ios/app/chs-exam-prep/id6757188482)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Week | $7.99 | per 7 days |
| 1 Month | $19.99 | per month |
| 1 Year | $29.99 | per year |
| 1500 | $1.99 | one-time |
| 3500 | $2.99 | one-time |
| 9000 | $4.99 | one-time |


## Frequently asked questions

### Is Stack Memory free?

Stack Memory is free to download, with no in-app purchases.

### Is CHS Exam Prep free?

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

### Do Stack Memory or CHS Exam Prep have ads?

Neither Stack Memory nor CHS Exam Prep shows ads.

---

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