# 边框水印 vs KnowCamera

The clearest difference is in-app purchases: KnowCamera at none against 边框水印's 3. KnowCamera also leads on update cadence (fortnightly vs every 2 months). 边框水印's advantage is iOS requirement (12.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. 边框水印 sells 3 in-app purchases, starting at $3.99 per month. KnowCamera asks for nothing beyond the download.

边框水印 ships an update every 2 months, KnowCamera fortnightly. The most recent releases landed on September 30, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | 边框水印 | KnowCamera |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (11 ratings)](https://appshunter.io/ios/app/id6480434136/reviews)** | — |
| Number of ratings | **11** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Freemium | — |
| Size | 181 MB | 2 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [鑫昕 马](https://appshunter.io/developer/1715187540) | [爱问答科技(北京)有限公司](https://appshunter.io/developer/1795400452) |

## What reviewers say

### 边框水印

[App page](https://appshunter.io/ios/app/id6480434136)

Automatically add professional-looking borders and watermarks to your photos. Display EXIF data, camera logos, and personal signatures to enhance your images with a premium feel. Save custom templates for quick application.

**Highlights:** Automatic EXIF data display, Camera and lens logo watermarks, Customizable border parameters, Saveable border templates, Original image export, Support for multiple camera brands

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月会员 | $3.99 | per month |
| 年会员 | $9.99 | per year |
| 永久会员 | $14.99 | one-time |


### KnowCamera

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 边框水印 free?

边框水印 is free to download, with in-app purchases available.

### Is KnowCamera free?

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

### Do 边框水印 or KnowCamera have ads?

Neither 边框水印 nor KnowCamera shows ads.

### Which is updated more often, 边框水印 or KnowCamera?

边框水印 ships an update every 2 months, and KnowCamera fortnightly. Most recently, 边框水印 was updated on September 30, 2026 and KnowCamera on October 1, 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.*