Comparison

Diffraction Grating Calculator vs Megapixels Resolution Calc

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Diffraction Grating Calculator

Features
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Diffraction Grating Calculator is a physics/math calculator that calculates the angles of diffracted orders of monochromatic light when shone on a reflective diffraction grating. Features: - Instant calculation. - Results are copyable to other apps. - Formulas are included as reference. - Supports up to 16 decimal places. - Supports various units for each input. - Works seamlessly on both iPhone and iPad. - Lightweight, compact app optimized for everyday use. - Ad-free and built with privacy in mind. In optics, a diffraction grating is an optical component with a periodic structure that splits and diffracts light into several beams traveling in different directions. The emerging coloration is a form of structural coloration. The directions of these beams depend on the spacing of the grating and the wavelength of the light so that the grating acts as the dispersive element. Because of this, gratings are commonly used in monochromators and spectrometers. A diffraction grating is a material that contains a large number of parallel slits separated by a distance (d). This periodic separation of slits is usually on the order of micrometers. Because this distance is on the order of the wavelength of light, when light waves pass through the grating, the slits are able to cause constructive and destructive interference among the light waves. The waves will constructively interfere if the angle of reflection delays one of the waves by a whole wavelength. Diffraction grating equation: m * ฮป = a * sin(ฮธm) Where: m: The order number of the diffracted image, m = 1,2,3 ... ฮธ: Grating angle, in radians a: Grating Spacing, in lines per meter ฮป: Wavelength, in meters Thanks for your support and do visit nitrio.com for more apps for your iOS devices.

About

Megapixels Resolution Calc

Features
Read full description

How many pixels in a 12 megapixels image? How does that compare to difference aspect ratio? What is the resolution of Digital Cinema with 21:9 aspect ratio? How many megapixels by giving X width and Y height by image? How about the aspect ratio? The answer is here! This is a megapixel-resolution calculator, a tool to calculate and convert the graphical resolution base on 4 different aspect ratios 4:3 (SD), 16:9 (HD/fHD/4K), 21:9 (cinema) and 1:1. This tool also calculates and convert graphical resolution to megapixels. The output will include 4 different aspect ratios 4:3 (SD), 16:9 (HD/fHD/4K), 21:9 (cinema) and 1:1 if the ratio match one of these. Preview box will give you an impression for resolution input. 21:9, 16:9 and 4:3 is the ratio of x:y or width:height of the image sensor or output image/video format. Older digital cameras/camcorders aspect ratio is usually 4:3 (SD). However newer digital cameras/camcorders aspect ratio is 16:9 (HD/fHD/4K). Video cameras such as camcorders can be either 4:3 (SD) or 16:9 (HD/fHD/4K). Some camcorders (video and digital) can do both 4:3 (SD) and 16:9 (HD/fHD/4K). Thanks for your support and do visit nitrio.com for more apps for your iOS devices.

Screenshots

Diffraction Grating Calculator4 screens
Megapixels Resolution Calc4 screens

Verdict

The call

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

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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.

UpkeepUpdate frequency

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.

ScorecardNo meaningful differences
Diffraction Grating Calculator versus Megapixels Resolution Calc: the parameters behind the verdict, then further details
ParameterDiffraction Grating CalculatorMegapixels Resolution Calc
Price$2.99$2.99
Update frequencyEvery 29 months โ€” betterEvery 38 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS1313
Further details โ€” not scored
Size1 MB1 MB
Age rating4+4+
DeveloperTan Chia LingHeng Jia Liang

In-app purchases

None

Diffraction Grating Calculator

No in-app purchases

None

Megapixels Resolution Calc

No in-app purchases

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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