# Flicker Meter for Light vs Rival Aqua

The clearest difference is update cadence: Rival Aqua at weekly against Flicker Meter for Light's every 2 months. Flicker Meter for Light's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement 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 and Rival Aqua sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Flicker Meter for Light ships an update every 2 months, Rival Aqua weekly. The most recent releases landed on October 27, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Flicker Meter for Light | Rival Aqua |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 43 MB | 1 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Contechity AB](https://appshunter.io/developer/1649290454) | [Makarov Anton](https://appshunter.io/developer/6780273796) |

## 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 |


### Rival Aqua

[App page](https://appshunter.io/ios/app/rival-aqua/id6795191010)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $0.99 | one-time |


## Frequently asked questions

### Is Flicker Meter for Light free?

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

### Is Rival Aqua free?

Rival Aqua is free to download, with in-app purchases available.

### Do Flicker Meter for Light or Rival Aqua have ads?

Neither Flicker Meter for Light nor Rival Aqua shows ads.

### Which is updated more often, Flicker Meter for Light or Rival Aqua?

Flicker Meter for Light ships an update every 2 months, and Rival Aqua weekly. Most recently, Flicker Meter for Light was updated on October 27, 2026 and Rival Aqua on October 2, 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.*