# Memory Alarm Clock vs mC AC400

The clearest difference is in-app purchases: mC AC400 at none against Memory Alarm Clock's 1. mC AC400 also leads on ads (none vs shown) and update cadence (every 3 months vs every 7 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Memory Alarm Clock sells 1 one-off in-app purchase. mC AC400 asks for nothing beyond the download.

Memory Alarm Clock ships an update every 7 months, mC AC400 every 3 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Memory Alarm Clock | mC AC400 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (145 ratings)](https://appshunter.io/ios/app/memory-alarm-clock/id889715932/reviews)** | — |
| Number of ratings | **145** | — |
| Positive reviews | 67.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | Free with in-app purchases | — |
| Size | 77 MB | 51 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jarig Duval](https://appshunter.io/developer/539738096) | [ISIPARK IC VE DIS TICARET INSAAT ISITMA SISTEMLERI OTOMOTIV SANAYI ANONIM SIRKETI](https://appshunter.io/developer/1289067142) |

## What reviewers say

### Memory Alarm Clock

[App page](https://appshunter.io/ios/app/memory-alarm-clock/id889715932)

This app uses loud ringtones and a memory game to ensure you wake up on the first try. It also offers a customizable bedside clock, bedtime reminders, and morning routine tracking to help you establish better sleep habits and start your day effectively.

**Highlights:** Memory game to stop alarm, Extremely loud ringtones, Customizable bedside clock, Bedtime reminder, Morning routine tracker, Don't Wake my Spouse Button, Impossible to mute alarm

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad Free | $14.99 | one-time |

**What reviewers like**

- 💡 Effective at waking users up
- 👍 Simple alarm with color combo
- 💡 Unique color pattern to turn off
- 🚀 Runs in the background
- 💡 Good for memory improvement

**What reviewers complain about**

- 😠 Ads are annoying
- 🐛 App crashes frequently
- 🐛 Alarms delete themselves
- 🐛 Does not work in silent mode
- 🐛 Does not work in do not disturb mode

**Reported bugs**

- App crashes a lot
- Alarms delete themselves
- App doesn't work in silent mode
- App doesn't work in do not disturb mode
- App becomes white, cannot set alarms

**Requested features**

- Support for silent mode
- Support for do not disturb mode
- Option to set days of the week for alarms
- Louder and more annoying ringtones
- Ability to use custom ringtones


### mC AC400

[App page](https://appshunter.io/ios/app/mc-ac400/id1491883394)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Memory Alarm Clock free?

Memory Alarm Clock is free to download, with in-app purchases available.

### Is mC AC400 free?

mC AC400 is free to download, with no in-app purchases.

### Do Memory Alarm Clock or mC AC400 have ads?

Memory Alarm Clock shows ads; mC AC400 does not.

### Which is updated more often, Memory Alarm Clock or mC AC400?

Memory Alarm Clock ships an update every 7 months, and mC AC400 every 3 months. Most recently, Memory Alarm Clock was updated on October 24, 2026 and mC AC400 on October 25, 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.*