Calndars vs Document Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calndars
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.
- 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
Read full descriptionHide full description
Convert dates across cultures with precision and speed. Calndars is a powerful yet minimal calendar converter designed for global professionals, researchers, and anyone working across time systems. Instantly translate dates between major calendar systems including Gregorian, Hebrew, Islamic, Chinese, Persian, and more. Whether you're coordinating international projects or exploring historical timelines, Calndars delivers accurate results in seconds. Built with modern Apple technologies, the app offers a fast, native experience across iPhone, iPad, Mac, and Apple Watch. Customize your workflow with widgets, favorites, and seamless Shortcuts integration. Designed for efficiency and clarity, Calndars supports over 30 languages and integrates smoothly into your daily tools—without collecting any personal data. A focused utility for a global world. FEATURES - Calndars is the best app to converts dates between the most used calendars in the world. - Select a calendar to set a date, and get the corresponding date in another calendar. - Copy the date to use it in another app. - Add a calendar to the favourites by tapping the star. - Add a calendar to the widgets by tapping the 4 squares icon. - Calendars can be reordered in the list. INTEGRATION - The app supports small, medium and large widgets. - Create a Shortcut in the Apple's Shortcuts App and use the Shortcut everywhere. - Use AppleScript on MacOS for integration between Calndars and other Apps. CALENDARS Calendars to convert between are: - Buddhist - Chinese - Coptic - Ethiopic (Amete Alem) - Ethiopic (Amete Mihret) - Gregorian - Hebrew - indian - Islamic Civil - Islamic Tabular - Islamic Umm Al Qura - Japanese - Persian - Taiwanese - Bangla - Gujarati - Kannada - Malayalam - Marathi - Odia - Tamil - Telugu - Vikram - Dangi - Vietnamese PLATFORM OR DEVICES - iPhone - iPad - Mac - AppleWatch.
Document Viewer
Read full descriptionHide full description
Palmory is a mobile viewer for Markdown notes, HTML artifacts, PDFs, and related files hosted in GitHub repositories. It is built for browsing knowledge vaults, design docs, research notes, and AI-generated HTML reports on mobile. Use Palmory to open a repository, browse folders, read Markdown, view safe HTML artifacts, search your indexed content, and return to recently opened notes. Palmory stores your GitHub token in local secure storage on your device and keeps repository indexes and cached content local to the app. The current release focuses on viewing and search. It does not edit repository files, commit changes, push branches, resolve merge conflicts, or run a backend operated by GAVRRI. It also does not include ads, tracking, or paid features. Palmory is an independent app and is not affiliated with GitHub, Inc.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Calndars | Document Viewer |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 26.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 6 MB | 171 MB |
| Age rating | 4+ | 4+ |
| Developer | Geert Jadoul | GAVRRI |
In-app purchases
Calndars
No in-app purchases
Document Viewer
No in-app purchases





