# KnowCamera vs AirCull

The clearest difference is in-app purchases: KnowCamera at none against AirCull's 3. KnowCamera also leads on iOS requirement (15.6 vs 17.0). AirCull's advantage is update cadence (weekly vs fortnightly). On price, ads and device support there is nothing between them.

Both are free to download. AirCull sells 3 in-app purchases, starting at $2.99 per month. KnowCamera asks for nothing beyond the download.

KnowCamera ships an update fortnightly, AirCull weekly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | KnowCamera | AirCull |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (11 ratings)](https://appshunter.io/ios/app/aircull-photo-cleaner/id6764547266/reviews)** |
| Number of ratings | — | **11** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | — | Freemium |
| Size | 2 MB | 58 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [爱问答科技(北京)有限公司](https://appshunter.io/developer/1795400452) | [靖文 陈](https://appshunter.io/developer/1895791485) |

## What reviewers say

### KnowCamera

[App page](https://appshunter.io/ios/app/knowcamera/id6745214202)

**Features:** macOS Compatibility

**In-app purchases:** none


### AirCull

[App page](https://appshunter.io/ios/app/aircull-photo-cleaner/id6764547266)

This app offers a calm approach to organizing your photo library. It breaks down large camera rolls into manageable batches, allowing you to easily review, delete, or keep photos. Focus on specific categories like duplicates or similar images with helpful analysis signals.

**Highlights:** Daily photo review batches, Card-based photo swiping, Categorized cleanup (duplicates, similar), On-device photo analysis, Review before deletion, Recoverable content bin

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AirCull Pro 月度版 | $2.99 | per month |
| AirCull Pro Yearly | $6.99 | per year |
| AirCull Lifetime Pro | $9.99 | one-time |


## Frequently asked questions

### Is KnowCamera free?

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

### Is AirCull free?

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

### Do KnowCamera or AirCull have ads?

Neither KnowCamera nor AirCull shows ads.

### Which is updated more often, KnowCamera or AirCull?

KnowCamera ships an update fortnightly, and AirCull weekly. Most recently, KnowCamera was updated on October 30, 2026 and AirCull 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.*