# HB Auditory Memory vs ZENMMA

The clearest difference is in-app purchases: HB Auditory Memory at none against ZENMMA's 2. ZENMMA's advantage is update cadence (every 9 days vs every 3 months) and iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. ZENMMA sells 2 in-app purchases, starting at $19.99 per month. HB Auditory Memory asks for nothing beyond the download.

HB Auditory Memory ships an update every 3 months, ZENMMA every 9 days. The most recent releases landed on October 16, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | HB Auditory Memory | ZENMMA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (35 ratings)](https://appshunter.io/ios/app/hb-auditory-memory/id791651270/reviews)** | — |
| Number of ratings | **35** | — |
| Positive reviews | 63.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | Free | — |
| Size | 242 MB | 35 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Super Duper Publications](https://appshunter.io/developer/427263142) | [ZEN Mixed MArtial Arts Inc.](https://appshunter.io/developer/1810860326) |

## What reviewers say

### HB Auditory Memory

[App page](https://appshunter.io/ios/app/hb-auditory-memory/id791651270)

This educational app helps students improve auditory memory, closure, and comprehension skills through engaging, multi-level missions. Players assist characters in saving MemoryTown from a forgetful villain by completing various listening activities.

**Highlights:** Auditory memory training, Auditory closure exercises, Comprehension skill development, Memory for Numbers, Memory for Words, Memory for Details, Auditory Closure, Memory for WH Information

**Features:** macOS Compatibility

**In-app purchases:** none


### ZENMMA

[App page](https://appshunter.io/ios/app/zenmma/id6745118962)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $19.99 | per month |
| Yearly Subscription | $199.99 | per year |


## Frequently asked questions

### Is HB Auditory Memory free?

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

### Is ZENMMA free?

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

### Do HB Auditory Memory or ZENMMA have ads?

Neither HB Auditory Memory nor ZENMMA shows ads.

### Which is updated more often, HB Auditory Memory or ZENMMA?

HB Auditory Memory ships an update every 3 months, and ZENMMA every 9 days. Most recently, HB Auditory Memory was updated on October 16, 2026 and ZENMMA on October 1, 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.*