Comparison

Diffraction Grating Calculator vs Resistor AI Calculator

Price, ratings, monetisation and update history for both apps, side by side — 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 * λ = a * sin(θm) Where: m: The order number of the diffracted image, m = 1,2,3 ... θ: Grating angle, in radians a: Grating Spacing, in lines per meter λ: Wavelength, in meters Thanks for your support and do visit nitrio.com for more apps for your iOS devices.

About

Resistor AI Calculator

Point your phone's camera at a resistor to instantly identify its value. Currently supports 4-band carbon film resistors with a 5% tolerance.

Highlights
  • Real-time resistor detection
  • Automatic resistance calculation
  • Supports 4-band carbon film resistors
  • 5% margin of error detection
  • Uses smartphone camera
Features
Read full description

Hold your smartphone over the resistor, and detects the object in real time and calculates the resistance value. Currently, only carbon film (brown) resistors with 4 lines and a margin of error of ± 5% (gold) are supported.

Screenshots

Diffraction Grating Calculator4 screens
Resistor AI Calculator3 screens

Verdict

The call

The clearest difference is price: Resistor AI Calculator at Free against Diffraction Grating Calculator's $2.99. Diffraction Grating Calculator's advantage is ads (none vs shown) and iOS requirement (13 vs 15.0). On update cadence, in-app purchases and device support there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Resistor AI Calculator is free to download; Diffraction Grating Calculator costs $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, Resistor AI Calculator every 15 months. The most recent releases landed on May 19, 2026 and June 5, 2026 respectively.

Scorecard3 real differences · 7 level
Diffraction Grating Calculator versus Resistor AI Calculator: the parameters behind the verdict, then further details
ParameterDiffraction Grating CalculatorResistor AI Calculator
Price$2.99Free — better
Rating—3.6 (5 ratings) — better
Positive reviews—0.0% of reviews
Number of ratings—5 — better
Update frequencyEvery 29 monthsEvery 15 months — better
AdsNo — betterYes
In-app purchasesNoNo
Monetization—Ad-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13 — better15.0
Further details — not scored
Size1 MB71 MB
Age rating4+4+
DeveloperTan Chia LingDaichi Takigawa

In-app purchases

None

Diffraction Grating Calculator

No in-app purchases

None

Resistor AI Calculator

No in-app purchases

Questions

Is Diffraction Grating Calculator free?
Diffraction Grating Calculator costs $2.99, with no in-app purchases.
Is Resistor AI Calculator free?
Resistor AI Calculator is free to download, with no in-app purchases.
Do Diffraction Grating Calculator or Resistor AI Calculator have ads?
Resistor AI Calculator shows ads; Diffraction Grating Calculator does not.
Which is updated more often, Diffraction Grating Calculator or Resistor AI Calculator?
Diffraction Grating Calculator ships an update every 29 months, and Resistor AI Calculator every 15 months. Most recently, Diffraction Grating Calculator was updated on May 19, 2026 and Resistor AI Calculator on June 5, 2026.

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