# Mathrubhumi Calendar vs Diffraction Grating Calculator

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.

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.

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.

## The numbers

| Metric | Mathrubhumi Calendar | Diffraction Grating Calculator |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[4.9 (7 ratings)](https://appshunter.io/ios/app/mathrubhumi-calendar/id1313655526/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 58.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 29 months |
| Monetization | Free | — |
| Size | 75 MB | 1 MB |
| Requires iOS | 16.0 | **13** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MATHRUBHUMI PRINTING AND PUBLISHING COMPANY LIMITED](https://appshunter.io/developer/730031659) | [Nitrio](https://appshunter.io/developer/321121189) |

## What reviewers say

### Mathrubhumi Calendar

[App page](https://appshunter.io/ios/app/mathrubhumi-calendar/id1313655526)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Diffraction Grating Calculator

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

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

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*