White Noise Plus vs Harmonic Wave Equation Calc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
White Noise Plus
This utility app provides a variety of ambient sounds like white, brown, and pink noise to aid relaxation and sleep. It includes customizable features such as a sleep timer, volume fading, and theme options. Integration with Siri Shortcuts and widgets enhances user convenience.
- White, brown, and pink noise generation
- Sleep timer
- Wavy and fading volume control
- Dark/light theme options
- Siri Shortcuts support
- Widget integration
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A white, brown, and pink noise player focused on ease-of-use and a calm design. Most features are free - sleep timer - wavy volume - fading volume - dark/light theme - Siri Shortcuts support - widgets Premium unlocks: - nature, fire, and rain - more themes - nightlight
Harmonic Wave Equation Calc
This physics and math calculator quickly determines wave properties like displacement, velocity, and amplitude. It provides instant calculations with copyable results and includes reference formulas. Optimized for everyday use, it supports high precision and various units.
- Instant wave calculations
- Copyable results
- Included reference formulas
- Supports 16 decimal places
- Multiple unit support
- Ad-free and private
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Harmonic Wave Equation Calculator is a physics/math calculator used to find the displacement of a given point along the wave, the position of that point, the time point, wave velocity, wavelength, amplitude, or initial phase of the wave quickly and easily. Features: - Instant calculation. - Results are copyable to other apps. - Formulas are included as references. - Supports up to 16 decimal places. - Supports various units for each input. - Works seamlessly on both iPhone and iPad. - Lightweight, compact app optimized for everyday use. - Ad-free and built with privacy in mind. A harmonic of such a wave is a wave with a frequency that is a positive integer multiple of the frequency of the original wave, known as the fundamental frequency. The original wave is also called the 1st harmonic; the following harmonics are known as higher harmonics. Formula: y = A * sin[(2π / λ) * (x - vt) + Φ] where: y - displacement of a given point along the wave x - position of that point (its distance from the source) t - time point v - wave velocity λ - wavelength A - amplitude Φ - initial phase of the wave Thank you for your support, and feel free to visit nitrio.com for more apps for your iOS devices.
Screenshots
Verdict
The clearest difference is price: White Noise Plus at Free against Harmonic Wave Equation Calc's $2.99. White Noise Plus also leads on ratings volume (28 vs 1). Harmonic Wave Equation Calc's advantage is in-app purchases (none vs 1) and iOS requirement (13 vs 18.6). On rating, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
White Noise Plus is free to download; Harmonic Wave Equation Calc costs $2.99 up front. White Noise Plus sells 1 one-off in-app purchase. Harmonic Wave Equation Calc asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for White Noise Plus against 5.0 for Harmonic Wave Equation Calc. That said, the two scores are not equally well evidenced: White Noise Plus has 28 ratings behind it against 1, so its average is the more settled of the two.
White Noise Plus ships an update every 15 months, Harmonic Wave Equation Calc every 31 months. The most recent releases landed on November 3, 2026 and November 2, 2026 respectively.
| Parameter | White Noise Plus | Harmonic Wave Equation Calc |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 5.0 (28 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 28 — better | 1 |
| Update frequency | Every 15 months — better | Every 31 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 18.6 | 13 — better |
| Further details — not scored | ||
| Size | 12 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | David Albers | Nitrio |
Customer experience
White Noise Plus
Harmonic Wave Equation Calc
In-app purchases
White Noise Plus
- Premium$3.00
Harmonic Wave Equation Calc
No in-app purchases
Questions
Is White Noise Plus free?
Is Harmonic Wave Equation Calc free?
Which has better reviews, White Noise Plus or Harmonic Wave Equation Calc?
Do White Noise Plus or Harmonic Wave Equation Calc have ads?
Which is updated more often, White Noise Plus or Harmonic Wave Equation Calc?
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