# Harmonic Wave Equation Calc vs Electronic Circuits Calc Pro

The clearest difference is update cadence: Electronic Circuits Calc Pro at every 2 months against Harmonic Wave Equation Calc's every 31 months. Harmonic Wave Equation Calc's advantage is price ($2.99 vs $4.99) and iOS requirement (13 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Harmonic Wave Equation Calc costs $2.99 and Electronic Circuits Calc Pro $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Harmonic Wave Equation Calc ships an update every 31 months, Electronic Circuits Calc Pro every 2 months. The most recent releases landed on November 2, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Harmonic Wave Equation Calc | Electronic Circuits Calc Pro |
| --- | --- | --- |
| Price | **$2.99** | $4.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/harmonic-wave-equation-calc/id1412323951/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 31 months | **Every 2 months** |
| Monetization | Paid | — |
| Size | 1 MB | 19 MB |
| Requires iOS | **13** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### 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


### Electronic Circuits Calc Pro

[App page](https://appshunter.io/ios/app/electronic-circuits-calc-pro/id1658493129)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Harmonic Wave Equation Calc free?

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

### Is Electronic Circuits Calc Pro free?

Electronic Circuits Calc Pro costs $4.99, with no in-app purchases.

### Do Harmonic Wave Equation Calc or Electronic Circuits Calc Pro have ads?

Neither Harmonic Wave Equation Calc nor Electronic Circuits Calc Pro shows ads.

### Which is updated more often, Harmonic Wave Equation Calc or Electronic Circuits Calc Pro?

Harmonic Wave Equation Calc ships an update every 31 months, and Electronic Circuits Calc Pro every 2 months. Most recently, Harmonic Wave Equation Calc was updated on November 2, 2026 and Electronic Circuits Calc Pro on October 27, 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.*