Wavelength Calculator vs ProPi System Analyzer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Wavelength Calculator
This physics and math tool quickly calculates wave properties like wavelength and frequency. It supports various units, high precision, and allows results to be copied to other applications. The app is lightweight, ad-free, and designed with privacy in mind.
- Instant calculations
- Copyable results
- Included formulas
- High precision (16 decimal places)
- Multiple unit support
- Ad-free and private
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Wavelength Calculator is a physics/math calculator to find wavelength and frequency fast and easy. Features: - Instant calculation. - Results are copyable to other apps. - Formulas are included as reference. - 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. There are three main properties of a wave: velocity, wavelength, and frequency. [v] Wave velocity is the measure of how fast a wave propagates in a given medium. Its unit is meters per second. [λ] Wavelength is the distance over which the shape of the wave repeats. It depends on the medium through which the wave travels. [f] Frequency of a wave refers to how many times (per a given time period) the particles of a medium vibrate when the wave is passing through it. The unit of frequency is Hertz, or 1/second. Wavelength Formula: f = v/λ Where: λ (Lambda) = Wavelength in meters v = Wave velocity f = Frequency (Hz) Thanks for your support, and do visit nitrio.com for more apps for your iOS devices.
ProPi System Analyzer
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ProPi System Analyzer is a professional audio measurement and system alignment tool designed for sound engineers, technicians, and live sound professionals. ProPi helps you analyze and optimize sound systems directly on iPhone with real-time measurement tools for system tuning and acoustic analysis. Key features include: • RTA and spectrum analysis • Phase and magnitude measurement • Impulse response analysis • Group delay measurement • SPL monitoring • Delay and time alignment tools • Sweep and pink-noise measurement • Subwoofer system analysis and alignment • Subwoofer array visualization • Crossover and system tuning tools • Professional audio measurement displays ProPi is designed for PA systems, live sound, speaker alignment, system commissioning, and acoustic troubleshooting. Whether you are aligning subwoofers with main speakers, checking phase relationships, analyzing frequency response, or tuning a complete sound system, ProPi provides the measurement tools needed for professional audio work.
Screenshots
Verdict
The clearest difference is price: Wavelength Calculator at $2.99 against ProPi System Analyzer's $19.99. Wavelength Calculator also leads on device support (3 vs 1) and iOS requirement (13 vs 17.0). ProPi System Analyzer's advantage is update cadence (every 5 days vs every 30 months). On ads and in-app purchases 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
Wavelength Calculator costs $2.99 and ProPi System Analyzer $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Wavelength Calculator ships an update every 30 months, ProPi System Analyzer every 5 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | Wavelength Calculator | ProPi System Analyzer |
|---|---|---|
| Price | $2.99 — better | $19.99 |
| Rating | 2.6 (5 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 30 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13 — better | 17.0 |
| Further details — not scored | ||
| Size | 1 MB | 59 MB |
| Age rating | 4+ | 4+ |
| Developer | Nitrio | Anh Viet Do |
In-app purchases
Wavelength Calculator
No in-app purchases
ProPi System Analyzer
No in-app purchases
Questions
Is Wavelength Calculator free?
Is ProPi System Analyzer free?
Do Wavelength Calculator or ProPi System Analyzer have ads?
Which is updated more often, Wavelength Calculator or ProPi System Analyzer?
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