# 密钥管理大师 vs Flicker Insight

The clearest difference is in-app purchases: 密钥管理大师 at none against Flicker Insight's 2. 密钥管理大师 also leads on iOS requirement (16.0 vs 18.0). On price, ads and device support there is nothing between them.

密钥管理大师 costs $0.29 and Flicker Insight $0.99 up front. Flicker Insight sells 2 one-off in-app purchases. 密钥管理大师 asks for nothing beyond the download.

## The numbers

| Metric | 密钥管理大师 | Flicker Insight |
| --- | --- | --- |
| Price | **$0.29** | $0.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/flicker-insight-pwm-test/id6794661401/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 60.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 days |
| Monetization | — | Paid |
| Size | 1 MB | 212 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Dawei Bi](https://appshunter.io/developer/1823242521) | [名楷 王](https://appshunter.io/developer/1896763218) |

## What reviewers say

### 密钥管理大师

[App page](https://appshunter.io/ios/app/passkey/id6760811342)

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

**In-app purchases:** none


### Flicker Insight

[App page](https://appshunter.io/ios/app/flicker-insight-pwm-test/id6794661401)

Detects imperceptible light flicker from various sources like screens and bulbs that can cause eye strain. Offers detailed metrics, ambient light and color temperature estimates, and generates exportable reports. Prioritizes user privacy with offline functionality and no ads.

**Highlights:** Quick flicker test with camera, Eye comfort assessment, Detailed flicker metrics, Ambient illuminance estimate, Color temperature estimate, PDF report generation, Offline functionality

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| A Popsicle | $0.99 | one-time |
| A Coffee | $2.99 | one-time |


## Frequently asked questions

### Is 密钥管理大师 free?

密钥管理大师 costs $0.29, with no in-app purchases.

### Is Flicker Insight free?

Flicker Insight costs $0.99, and also offers in-app purchases.

### Do 密钥管理大师 or Flicker Insight have ads?

Neither 密钥管理大师 nor Flicker Insight shows ads.

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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.*