# Mini Spectrometer (NIR) vs Flicker Meter for Light

The clearest difference is in-app purchases: Mini Spectrometer (NIR) at none against Flicker Meter for Light's 4. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Flicker Meter for Light sells 3 in-app purchases, starting at $0.99 per month. Mini Spectrometer (NIR) asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on May 16, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Mini Spectrometer (NIR) | Flicker Meter for Light |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (47 ratings)](https://appshunter.io/ios/app/flicker-meter-for-light-pwm/id1672848632/reviews)** |
| Number of ratings | — | **47** |
| Positive reviews | — | 59.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 18 MB | 43 MB |
| Requires iOS | **14.4** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ams AG](https://appshunter.io/developer/1077235619) | [Contechity AB](https://appshunter.io/developer/1649290454) |

## What reviewers say

### Mini Spectrometer (NIR)

[App page](https://appshunter.io/ios/app/mini-spectrometer-nir/id1635109082)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 (3)**

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


## Frequently asked questions

### Is Mini Spectrometer (NIR) free?

Mini Spectrometer (NIR) is free to download, with no in-app purchases.

### Is Flicker Meter for Light free?

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

### Do Mini Spectrometer (NIR) or Flicker Meter for Light have ads?

Neither Mini Spectrometer (NIR) nor Flicker Meter for Light shows ads.

### Which is updated more often, Mini Spectrometer (NIR) or Flicker Meter for Light?

Mini Spectrometer (NIR) ships an update every 2 months, and Flicker Meter for Light every 2 months. Most recently, Mini Spectrometer (NIR) was updated on May 16, 2026 and Flicker Meter for Light on September 21, 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.*