# Flicker Meter for Light vs Pos後台App

The clearest difference is in-app purchases: Pos後台App at none against Flicker Meter for Light's 4. Pos後台App also leads on iOS requirement (11.0 vs 15.0). Flicker Meter for Light's advantage is device support. On price there is nothing between them.

Both are free to download. Flicker Meter for Light sells 4 in-app purchases, starting at $0.99 per month. Pos後台App asks for nothing beyond the download.

## The numbers

| Metric | Flicker Meter for Light | Pos後台App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (54 ratings)](https://appshunter.io/ios/app/flicker-meter-for-light-pwm/id1672848632/reviews)** | — |
| Number of ratings | **54** | — |
| Positive reviews | 62.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 43 MB | 2 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Contechity AB](https://appshunter.io/developer/1649290454) | [ChiefPay Inc.](https://appshunter.io/developer/1450060324) |

## What reviewers say

### Flicker Meter for Light

[App page](https://appshunter.io/ios/app/flicker-meter-for-light-pwm/id1672848632)

Detect and measure invisible high-frequency flickering in LED lights and screens that can cause eye strain and headaches. Find flicker-free alternatives to improve your comfort and health.

**Highlights:** Detect invisible high-frequency flickering, Measure flicker intensity (%), Measure flicker frequency (Hz), Identify flicker-free light sources, Easy-to-use interface, Instant results

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full access | $0.99 | per month |
| Full access | $4.99 | per year |
| Full access | $6.99 | one-time |
| Full access | $9.99 | one-time |


### Pos後台App

[App page](https://appshunter.io/ios/app/posapp/id6453363455)

**In-app purchases:** none


## Frequently asked questions

### Is Flicker Meter for Light free?

Flicker Meter for Light is free to download, with in-app purchases available.

### Is Pos後台App free?

Pos後台App is free to download, with no in-app purchases.

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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.*