# My Water vs FlickerCheck

The clearest difference is in-app purchases: My Water at none against FlickerCheck's 1. My Water also leads on update cadence (weekly vs every 2 months) and iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. FlickerCheck sells 1 one-off in-app purchase. My Water asks for nothing beyond the download.

My Water ships an update weekly, FlickerCheck every 2 months. The most recent releases landed on November 8, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | My Water | FlickerCheck |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 55 MB | 10 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [Swallow Shuai Technology Development Co., Ltd.](https://appshunter.io/developer/1628485379) | [biaopeng zhou](https://appshunter.io/developer/1895904365) |

## What reviewers say

### My Water

[App page](https://appshunter.io/ios/app/my-water-daily-tracker/id6472012809)

**Features:** macOS Compatibility

**In-app purchases:** none


### FlickerCheck

[App page](https://appshunter.io/ios/app/flickercheck-pwm-meter/id6804622251)

This utility uses your iPhone camera to detect brightness flicker from screens and lights. It analyzes variations and provides a clear assessment of flicker levels, estimated frequency, and modulation depth. Results can be saved locally for comparison.

**Highlights:** Screen and light testing modes, Automatic signal-quality guidance, Flicker level assessment, Estimated frequency and modulation depth, Captured signal waveform, Save and compare results locally, On-device camera processing

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro | $4.99 | one-time |


## Frequently asked questions

### Is My Water free?

My Water is free to download, with no in-app purchases.

### Is FlickerCheck free?

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

### Do My Water or FlickerCheck have ads?

Neither My Water nor FlickerCheck shows ads.

### Which is updated more often, My Water or FlickerCheck?

My Water ships an update weekly, and FlickerCheck every 2 months. Most recently, My Water was updated on November 8, 2026 and FlickerCheck on November 10, 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.*