# 卡罗影像 vs Visual Displacement Meter

The clearest difference is iOS requirement: 卡罗影像 at 12.0 against Visual Displacement Meter's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

卡罗影像 ships an update every 3 weeks, Visual Displacement Meter fortnightly. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 卡罗影像 | Visual Displacement Meter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Size | 81 MB | 59 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [卡罗科技](https://appshunter.io/developer/1060360258) | [Inteagle Information Technology(Dongguan) Co., Ltd.](https://appshunter.io/developer/1720865930) |

## What reviewers say

### 卡罗影像

[App page](https://appshunter.io/ios/app/id1237590520)

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

**In-app purchases:** none


### Visual Displacement Meter

[App page](https://appshunter.io/ios/app/visual-displacement-meter/id6749835043)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 卡罗影像 free?

卡罗影像 is free to download, with no in-app purchases.

### Is Visual Displacement Meter free?

Visual Displacement Meter is free to download, with no in-app purchases.

### Do 卡罗影像 or Visual Displacement Meter have ads?

Neither 卡罗影像 nor Visual Displacement Meter shows ads.

### Which is updated more often, 卡罗影像 or Visual Displacement Meter?

卡罗影像 ships an update every 3 weeks, and Visual Displacement Meter fortnightly. Most recently, 卡罗影像 was updated on October 26, 2026 and Visual Displacement Meter on October 28, 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.*