# Calndars vs Rizno

The clearest difference is price: Rizno at Free against Calndars's $3.99. Rizno also leads on iOS requirement (17.6 vs 26.0). Calndars's advantage is in-app purchases (none vs 2) and ads (none vs shown). On update cadence and device support there is nothing between them.

Rizno is free to download; Calndars costs $3.99 up front. Rizno sells 2 in-app purchases, starting at $0.99 per 7 days. Calndars asks for nothing beyond the download.

Calndars ships an update every 5 weeks, Rizno every 2 months. The most recent releases landed on October 6, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Calndars | Rizno |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/calndars/id1481775085/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Paid | — |
| Size | 6 MB | 12 MB |
| Requires iOS | 26.0 | **17.6** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Geert Jadoul](https://appshunter.io/developer/458883064) | [Asmaa Almarrikhi](https://appshunter.io/developer/1473860759) |

## What reviewers say

### Calndars

[App page](https://appshunter.io/ios/app/calndars/id1481775085)

Effortlessly convert dates between over 30 major calendar systems, including Gregorian, Islamic, and Chinese. This utility is designed for global professionals and researchers needing precise cross-cultural date translations. Integrates with widgets and Shortcuts for seamless workflow.

**Highlights:** Convert dates across 30+ calendar systems, Supports Gregorian, Islamic, Chinese, Hebrew, Persian, and more, Native experience on iPhone, iPad, Mac, Apple Watch, Customizable widgets, Shortcuts integration, AppleScript support on macOS

**In-app purchases:** none


### Rizno

[App page](https://appshunter.io/ios/app/rizno/id6744652492)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan - $0.99/week | $0.99 | per 7 days |
| Monthly Plan - $2.99/mo | $2.99 | per month |


## Frequently asked questions

### Is Calndars free?

Calndars costs $3.99, with no in-app purchases.

### Is Rizno free?

Rizno is free to download, with in-app purchases available.

### Do Calndars or Rizno have ads?

Rizno shows ads; Calndars does not.

### Which is updated more often, Calndars or Rizno?

Calndars ships an update every 5 weeks, and Rizno every 2 months. Most recently, Calndars was updated on October 6, 2026 and Rizno on October 18, 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.*