Comparison

Mathrubhumi Calendar vs Diffraction Grating Calculator

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

Head to head
About

Mathrubhumi Calendar

This app provides a comprehensive Malayalam calendar for 2026, integrating multiple calendar systems and offering details on holidays, auspicious timings, and celestial events. It allows users to add personal events with reminders and access historical calendar data.

Highlights
  • Integrated Malayalam, Tamil, Saka, and Hijri dates
  • Central Government holiday listings
  • Special days and festivals
  • Detailed auspicious timing (Muhoorthangal)
  • Astrological details (Nakshatraphalangal, Rasi)
  • Personal event scheduling and reminders
  • Access to previous four years' calendar data
Features
Read full description

The best Malayalam 2026 calendar app in the market. MThe Mathrubhumi Calendar 2026 is a complete and trusted Malayalam calendar app designed to keep you informed and organized throughout the year. It brings together Malayalam, Tamil, Saka, and Hijri dates in one place, making it easy to track important days and cultural observances. The app includes Central Government holidays under Kendra Sarkar Avadhi, special days and festivals through Visheshadivasangal, and detailed Muhoorthangal to help choose auspicious timings. Users can view Nakshatraphalangal, Rasi details, Njattuvela, and Samkramam, along with daily Rahu Kalam, Yamagandam, Gulika Kalam, and Muslim prayer timings. You can also add personal events using Ormakurippukal and receive timely reminders. With access to previous four years’ calendar data and a smooth, user-friendly interface, the Mathrubhumi Calendar 2026 combines tradition, accuracy, and convenience, making it the ideal Malayalam calendar app for everyday life.You can add and schedule all events. Ormakurippukal will remind you of your events. Previous four year’s calendar data is also available.

About

Diffraction Grating Calculator

Features
Read full description

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.

Screenshots

Mathrubhumi Calendar4 screens
Diffraction Grating Calculator4 screens

Verdict

The call

The clearest difference is price: Mathrubhumi Calendar at Free against Diffraction Grating Calculator's $2.99. Mathrubhumi Calendar also leads on update cadence (every 6 weeks vs every 29 months). Diffraction Grating Calculator's advantage is iOS requirement (13 vs 16.0). On ads, 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

Mathrubhumi Calendar 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

Mathrubhumi Calendar ships an update every 6 weeks, Diffraction Grating Calculator every 29 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

Scorecard3 real differences · 7 level
Mathrubhumi Calendar versus Diffraction Grating Calculator: the parameters behind the verdict, then further details
ParameterMathrubhumi CalendarDiffraction Grating Calculator
PriceFree — better$2.99
Rating4.9 (7 ratings) — better—
Positive reviews58.8% of reviews—
Number of ratings7 — better—
Update frequencyEvery 6 weeks — betterEvery 29 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.013 — better
Further details — not scored
Size75 MB1 MB
Age rating4+4+
DeveloperMATHRUBHUMI PRINTING AND PUBLISHING COMPANY LIMITEDNitrio

In-app purchases

None

Mathrubhumi Calendar

No in-app purchases

None

Diffraction Grating Calculator

No in-app purchases

Questions

Is Mathrubhumi Calendar free?
Mathrubhumi Calendar is free to download, with no in-app purchases.
Is Diffraction Grating Calculator free?
Diffraction Grating Calculator costs $2.99, with no in-app purchases.
Do Mathrubhumi Calendar or Diffraction Grating Calculator have ads?
Neither Mathrubhumi Calendar nor Diffraction Grating Calculator shows ads.
Which is updated more often, Mathrubhumi Calendar or Diffraction Grating Calculator?
Mathrubhumi Calendar ships an update every 6 weeks, and Diffraction Grating Calculator every 29 months. Most recently, Mathrubhumi Calendar was updated on October 24, 2026 and Diffraction Grating Calculator on October 27, 2026.

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