# Wavelength Calculator vs Time Delay calculator

The clearest difference is price: Time Delay calculator at Free against Wavelength Calculator's $2.99. Time Delay calculator also leads on update cadence (fortnightly vs every 30 months). Wavelength Calculator's advantage is ads (none vs shown) and iOS requirement (13 vs 15.8.3). On in-app purchases and device support there is nothing between them.

Time Delay calculator is free to download; Wavelength Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Wavelength Calculator ships an update every 30 months, Time Delay calculator fortnightly. The most recent releases landed on October 8, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Wavelength Calculator | Time Delay calculator |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[2.6 (5 ratings)](https://appshunter.io/ios/app/wavelength-calculator/id1413070800/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 30 months | **Fortnightly** |
| Monetization | Paid | — |
| Size | 1 MB | 36 MB |
| Requires iOS | **13** | 15.8.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### Wavelength Calculator

[App page](https://appshunter.io/ios/app/wavelength-calculator/id1413070800)

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.

**Highlights:** Instant calculations, Copyable results, Included formulas, High precision (16 decimal places), Multiple unit support, Ad-free and private

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

**In-app purchases:** none


### Time Delay calculator

[App page](https://appshunter.io/ios/app/time-delay-calculator/id6502032872)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Wavelength Calculator free?

Wavelength Calculator costs $2.99, with no in-app purchases.

### Is Time Delay calculator free?

Time Delay calculator is free to download, with no in-app purchases.

### Do Wavelength Calculator or Time Delay calculator have ads?

Time Delay calculator shows ads; Wavelength Calculator does not.

### Which is updated more often, Wavelength Calculator or Time Delay calculator?

Wavelength Calculator ships an update every 30 months, and Time Delay calculator fortnightly. Most recently, Wavelength Calculator was updated on October 8, 2026 and Time Delay calculator on October 25, 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.*