# Crescent Keys vs memory

The clearest difference is ads: Crescent Keys at none against memory's shown. Crescent Keys also leads on iOS requirement (11.0 vs 16.4). memory's advantage is update cadence (every 3 days vs fortnightly). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Crescent Keys ships an update fortnightly, memory every 3 days. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Crescent Keys | memory |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 3 days** |
| Size | 4 MB | 27 MB |
| Requires iOS | **11.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 9+ | 17+ |
| Developer | [Quoc Dat Nguyen](https://appshunter.io/developer/1680757392) | [KOGEN LAB](https://appshunter.io/developer/1882974787) |

## What reviewers say

### Crescent Keys

[App page](https://appshunter.io/ios/app/crescent-keys-video-time-note/id6447262729)

**In-app purchases:** none


### memory

[App page](https://appshunter.io/ios/app/memory-calendar/id6808228246)

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

**In-app purchases:** none


## Frequently asked questions

### Is Crescent Keys free?

Crescent Keys is free to download, with no in-app purchases.

### Is memory free?

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

### Do Crescent Keys or memory have ads?

memory shows ads; Crescent Keys does not.

### Which is updated more often, Crescent Keys or memory?

Crescent Keys ships an update fortnightly, and memory every 3 days. Most recently, Crescent Keys was updated on November 7, 2026 and memory on October 31, 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.*