# Calndars vs Document Viewer

The clearest difference is price: Document Viewer at Free against Calndars's $3.99. Document Viewer also leads on update cadence (every 2 weeks vs every 5 weeks) and iOS requirement (16.4 vs 26.0). On ads, in-app purchases and device support there is nothing between them.

Document Viewer is free to download; Calndars costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Calndars ships an update every 5 weeks, Document Viewer every 2 weeks. The most recent releases landed on September 18, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Calndars | Document Viewer |
| --- | --- | --- |
| 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 | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Monetization | Paid | — |
| Size | 6 MB | 171 MB |
| Requires iOS | 26.0 | **16.4** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Geert Jadoul](https://appshunter.io/developer/458883064) | [GAVRRI](https://appshunter.io/developer/1802751421) |

## 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


### Document Viewer

[App page](https://appshunter.io/ios/app/document-viewer-palmory/id6785251686)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calndars free?

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

### Is Document Viewer free?

Document Viewer is free to download, with no in-app purchases.

### Do Calndars or Document Viewer have ads?

Neither Calndars nor Document Viewer shows ads.

### Which is updated more often, Calndars or Document Viewer?

Calndars ships an update every 5 weeks, and Document Viewer every 2 weeks. Most recently, Calndars was updated on September 18, 2026 and Document Viewer on September 9, 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.*