# Crescent Keys vs MemoPer

The clearest difference is update cadence: Crescent Keys at fortnightly against MemoPer's every 2 months. Crescent Keys also leads on iOS requirement (11.0 vs 15.1). On price, ads, 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, MemoPer every 2 months. The most recent releases landed on September 15, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Crescent Keys | MemoPer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Size | 4 MB | 54 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [Quoc Dat Nguyen](https://appshunter.io/developer/1680757392) | [Daniel Grijuela](https://appshunter.io/developer/1020329535) |

## What reviewers say

### Crescent Keys

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

**In-app purchases:** none


### MemoPer

[App page](https://appshunter.io/ios/app/memoper/id6477760130)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Crescent Keys free?

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

### Is MemoPer free?

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

### Do Crescent Keys or MemoPer have ads?

Neither Crescent Keys nor MemoPer shows ads.

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

Crescent Keys ships an update fortnightly, and MemoPer every 2 months. Most recently, Crescent Keys was updated on September 15, 2026 and MemoPer on September 20, 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.*