# Paint Calculator vs Harmonic Wave Equation Calc

The clearest difference is price: Paint Calculator at Free against Harmonic Wave Equation Calc's $2.99. Paint Calculator also leads on update cadence (every 6 months vs every 31 months). Harmonic Wave Equation Calc's advantage is ads (none vs shown) and iOS requirement (13 vs 17.0). On in-app purchases and device support there is nothing between them.

Paint Calculator is free to download; Harmonic Wave Equation Calc costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Paint Calculator ships an update every 6 months, Harmonic Wave Equation Calc every 31 months. The most recent releases landed on October 23, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Paint Calculator | Harmonic Wave Equation Calc |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/harmonic-wave-equation-calc/id1412323951/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 6 months** | Every 31 months |
| Monetization | **Free** | Paid |
| Size | 6 MB | 1 MB |
| Requires iOS | 17.0 | **13** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MATTHEW ALLEN CHAPMAN](https://appshunter.io/developer/6785641563) | [Nitrio](https://appshunter.io/developer/321121189) |

## What reviewers say

### Paint Calculator

[App page](https://appshunter.io/ios/app/paint-calculator/id333568616)

Estimate the amount of paint needed for walls or ceilings by entering a few measurements. This tool simplifies the calculation process for your painting projects.

**Highlights:** Paint quantity estimation, Wall and ceiling calculations, Simple numerical input, Project planning tool

**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 Paint Calculator free?

Paint Calculator is free to download, with no in-app purchases.

### Is Harmonic Wave Equation Calc free?

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

### Do Paint Calculator or Harmonic Wave Equation Calc have ads?

Paint Calculator shows ads; Harmonic Wave Equation Calc does not.

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

Paint Calculator ships an update every 6 months, and Harmonic Wave Equation Calc every 31 months. Most recently, Paint Calculator was updated on October 23, 2026 and Harmonic Wave Equation Calc 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.*