# VHF vs Harmonic Wave Equation Calc

The clearest difference is price: Harmonic Wave Equation Calc at $2.99 against VHF's $9.99. VHF's advantage is update cadence (every 4 weeks vs every 31 months). On ads, in-app purchases, monetization model and device support there is nothing between them.

VHF costs $9.99 and Harmonic Wave Equation Calc $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

VHF ships an update every 4 weeks, Harmonic Wave Equation Calc every 31 months. The most recent releases landed on November 3, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | VHF | Harmonic Wave Equation Calc |
| --- | --- | --- |
| Price | $9.99 | **$2.99** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/harmonic-wave-equation-calc/id1412323951/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 31 months |
| Monetization | Paid | Paid |
| Size | 101 MB | 1 MB |
| Requires iOS | **12.2** | 13 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Richard Jaquemet](https://appshunter.io/developer/1804398750) | [Nitrio](https://appshunter.io/developer/321121189) |

## What reviewers say

### VHF

[App page](https://appshunter.io/ios/app/vhf-dsc/id1270639583)

This marine radio simulator allows users to practice sending various distress and routine messages. It supports communication between multiple devices and includes an auto-distress function for emergencies. A help section is available within the app for guidance.

**Highlights:** VHF-DSC radio simulation, Send Mayday, Pan Pan, Security, and Routine messages, Inter-device communication, Auto-distress function, Practice marine radio operator skills, Help section available

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

**In-app purchases:** none


### Harmonic Wave Equation Calc

[App page](https://appshunter.io/ios/app/harmonic-wave-equation-calc/id1412323951)

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.

**Highlights:** Instant wave calculations, Copyable results, Included reference formulas, Supports 16 decimal places, Multiple unit support, Ad-free and private

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

**In-app purchases:** none


## Frequently asked questions

### Is VHF free?

VHF costs $9.99, with no in-app purchases.

### Is Harmonic Wave Equation Calc free?

Harmonic Wave Equation Calc costs $2.99, with no in-app purchases.

### Do VHF or Harmonic Wave Equation Calc have ads?

Neither VHF nor Harmonic Wave Equation Calc shows ads.

### Which is updated more often, VHF or Harmonic Wave Equation Calc?

VHF ships an update every 4 weeks, and Harmonic Wave Equation Calc every 31 months. Most recently, VHF was updated on November 3, 2026 and Harmonic Wave Equation Calc on November 2, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*