# Aidem vs Crescent Keys

The clearest difference is in-app purchases: Crescent Keys at none against Aidem's 3. Crescent Keys also leads on iOS requirement (11.0 vs 16.5). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Aidem sells 3 in-app purchases, starting at $0.99 per month. Crescent Keys asks for nothing beyond the download.

Aidem ships an update weekly, Crescent Keys fortnightly. The most recent releases landed on September 20, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Aidem | Crescent Keys |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Freemium | — |
| Size | 27 MB | 4 MB |
| Requires iOS | 16.5 | **11.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [凯杰 俞](https://appshunter.io/developer/1110758345) | [Quoc Dat Nguyen](https://appshunter.io/developer/1680757392) |

## What reviewers say

### Aidem

[App page](https://appshunter.io/ios/app/aidem/id1554794581)

Organize, annotate, and share video clips with ease. Add memos while watching videos to quickly find specific segments later. Offers independent playback controls for clips and convenient gestures for video management.

**Highlights:** Add memos to videos, Independent memo outline view, Tags and bookmarks, File transfer between devices, Gesture controls for playback, Sync data via iCloud (Premium)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Annual Subscription | $6.99 | per year |
| Individual Licence | $27.99 | one-time |


### Crescent Keys

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

**In-app purchases:** none


## Frequently asked questions

### Is Aidem free?

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

### Is Crescent Keys free?

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

### Do Aidem or Crescent Keys have ads?

Neither Aidem nor Crescent Keys shows ads.

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

Aidem ships an update weekly, and Crescent Keys fortnightly. Most recently, Aidem was updated on September 20, 2026 and Crescent Keys on September 15, 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.*