# Mini Clock - flip white noise — super fun digital clock widget

> Ambient sound generator for focus and relaxation with customizable scenes. (iPhone/iPad app by 学成 黄.)

- Source: https://appshunter.io/ios/app/mini-clock-flip-white-noise/id1114360901 (this page in markdown: same URL + `.md`)
- Developer: [学成 黄](https://appshunter.io/developer/468307064)
- Category: Weather, Navigation
- Price: Free with in-app purchases
- Rating: 4.70/5 from 14 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 238 MB
- Languages: English, Chinese, Chinese
- Released: 2016-05-20
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/mini-clock-flip-white-noise/id1114360901/reviews.md

## What is Mini Clock?

Some people like to work in the cafe, but not in quiet library - some studies show that coffee shop environment will be more conducive to the sound focus, enhance creativity at work, this environment can be considered a kind of sound. " white noise. "

If you like listening to the rain, do not miss this application.

In addition to sound variety, also supports a variety of sound reverberation, and other custom scene.

Writing, running, travel time can be opened to listen!

It contains a variety of natural ambient sound.

Imitate the sounds of nature - this is the white noise (white noise), improve concentration, relaxation, fine.

Refers to white noise in a wide frequency range, the energy of each frequency band included in the noise and other noise equivalent bandwidth. Usually physically translate it into white noise (white noise). White noise or white noise is a constant power spectral density of random signals or random process. In other words, the signal power in each band is the same, since the white light is a mixture of various frequencies (colors) of monochromatic light, so that this signal has the nature of a flat power spectrum is called "white", this signal has therefore been called white noise. Noise signal relative, other do not have this property are called colored noise. Ideal white noise has infinite bandwidth, so its energy is infinite, which is impossible in the real world exists. In fact, we often limited bandwidth of the signal level regarded as white noise, because it makes us more convenient in mathematical analysis. However, the white noise in the mathematical treatment is more convenient, so it is a powerful tool for system analysis. In general, as long as the spectral width of a noise process has the effect that it is much larger than the bandwidth of the system, and its spectral density can basically be considered as a constant in the bandwidth, you can use it as white noise to deal with. For example, thermal noise and shot noise over a wide frequency range with a uniform power spectral density can usually think they are white noise. When you need to concentrate on work, there is always a complex and surrounding sound, you can use these two sounds to be obscured. In general, under normal circumstances you can use the white noise, pink noise is specifically for voice masking material. Pink noise has been known frequency is inversely proportional to (1 / f) noise, because its energy is inversely proportional to the frequency distribution, or every octave (Octave) the energy recession 3dB.

One application is the white noise of architectural acoustics, in order to weaken the internal space distracting and do not want the noise (such as conversation human) appears, use continuous low-intensity noise as background sound. Some sirens of emergency vehicles also use white noise as white noise to pass through cities such as background noise and traffic noise does not cause reflections, it is easier to attract attention. In electronic music also applied white noise, which is directly or as the input signal of the filter to produce other types of noise signals, especially in audio synthesis, often like cymbals for reproducing a high frequency domain so that percussion noise components. White noise is used to generate the impulse response. In order to ensure a balanced effect Venue concerts or other performances, it issued a white noise or pink noise from the PA system instantly, and in a different place to monitor the noise signal, so that engineers can effect a building acoustics can automatically enlarge or cut certain frequencies, which can be adjusted to give effect overall balance a balanced harmony. White noise can be used for frequency response of the filter amplifier or electronic test, sometimes it is used with a flat response microphone or automatic equalizer.

## Key features

- Variety of natural ambient sounds
- White noise generator
- Customizable sound reverberation
- Scene settings for different activities
- Imitates sounds of nature
- Enhances concentration and relaxation

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Upgrade Pro | $4.99 | one-time |


## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/mini-clock-flip-white-noise/id1114360901/reviews.md

### 1/5 — Meh

*2022-01-14, version 3.2.2*

not amazing… recommend just using youtube

### 5/5 — Nice app

*2021-03-04, version 3.2.0*

Simple and sweet. Easy to see.

### 5/5 — very good

*2019-02-14, version 1.1.0*

very good

### 5/5 — A very good app for white noise

*2018-03-29, version 1.1.0*

Very good, and you should download it

## Frequently asked questions about Mini Clock

### What is Mini Clock used for?

Mini Clock is used to generate a variety of natural ambient sounds, including white noise and rain, to help improve concentration and relaxation. It can be used during activities like writing, running, or traveling.

### Does Mini Clock have ads?

The provided data does not specify whether Mini Clock contains advertisements. However, it is listed as free with no in-app purchases.

### What kind of sounds does Mini Clock offer?

Mini Clock offers a variety of natural ambient sounds, including rain and different types of white noise. It aims to imitate the sounds of nature to aid focus and relaxation.

### Can I customize the sounds in Mini Clock?

Yes, Mini Clock supports customization of sound reverberation and scene settings. This allows users to tailor the ambient sound experience to their preferences and activities.

### What is the age rating for Mini Clock?

Mini Clock has an age rating of 4+. This indicates it is suitable for children aged four and above.

### On which devices can I use Mini Clock?

Mini Clock is available for iPhone, iPad, and iPod. It is designed for Apple's iOS ecosystem.

### How often is Mini Clock updated?

The latest version of Mini Clock was released on March 6, 2022. While specific update frequency isn't detailed, this indicates recent maintenance and support.

### What is the user rating for Mini Clock?

Mini Clock has a high user rating of 4.7 stars, based on 14 ratings. This suggests a generally positive user experience.

## Version history (last 1 release)

### 3.3.0 — 2022-03-06

Support iOS15, fix bug.

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All apps by 学成 黄: https://appshunter.io/developer/468307064

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*