# Diffraction Grating Calculator vs Megapixels Resolution Calc

Diffraction Grating Calculator and Megapixels Resolution Calc are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Diffraction Grating Calculator costs $2.99 and Megapixels Resolution Calc $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Diffraction Grating Calculator ships an update every 29 months, Megapixels Resolution Calc every 38 months. The most recent releases landed on May 19, 2026 and July 9, 2026 respectively.

## The numbers

| Metric | Diffraction Grating Calculator | Megapixels Resolution Calc |
| --- | --- | --- |
| Price | $2.99 | $2.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 29 months** | Every 38 months |
| Size | 1 MB | 1 MB |
| Requires iOS | 13 | 13 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tan Chia Ling](https://appshunter.io/developer/321121189) | [Heng Jia Liang](https://appshunter.io/developer/1532000635) |

## What reviewers say

### Diffraction Grating Calculator

[App page](https://appshunter.io/ios/app/diffraction-grating-calculator/id1413088894)

**Features:** macOS Compatibility

**In-app purchases:** none


### Megapixels Resolution Calc

[App page](https://appshunter.io/ios/app/megapixels-resolution-calc/id6444196890)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Diffraction Grating Calculator free?

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

### Is Megapixels Resolution Calc free?

Megapixels Resolution Calc costs $2.99, with no in-app purchases.

### Do Diffraction Grating Calculator or Megapixels Resolution Calc have ads?

Neither Diffraction Grating Calculator nor Megapixels Resolution Calc shows ads.

### Which is updated more often, Diffraction Grating Calculator or Megapixels Resolution Calc?

Diffraction Grating Calculator ships an update every 29 months, and Megapixels Resolution Calc every 38 months. Most recently, Diffraction Grating Calculator was updated on May 19, 2026 and Megapixels Resolution Calc on July 9, 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.*