atLEAF vs Calndars
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
atLEAF
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This app is a powerful tool for farmers and agronomists. It implements the Bluetooth® interface for atLEAF devices, allowing to remotely command them and to acquire measure data. Even by itself, it has many useful functions such as: • Planting: evaluation of the number of plants on a given field that can be defined as area, or length and width, or interactively through a map • Seeding: evaluation of the number and price of seeds • Weather and forecast data given for the mobile location • Unit conversions • Conversions among atLEAF measures and SPAD units, chlorophyll content and wheat N-management • Definition of group of measures and measure names When connected through Bluetooth with an atLEAF BLUE chlorophyll meter, it allows to: • Read information and status of the device • Set or read time and clock of the device • Transfer measure names from the device • Perform a measure on the device and read measure data with sensor temperature • Acquire the mobile location and to associate it to the measure • Display for a stored group of measure data in list form, graph or points on maps • Display statistics for a measure group • Export group of measures in an ADAT file
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
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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.
Screenshots
Verdict
The clearest difference is price: atLEAF at Free against Calndars's $3.99. atLEAF also leads on iOS requirement (12.0 vs 26.0). Calndars's advantage is update cadence (every 5 weeks vs every 44 months). 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
atLEAF is free to download; Calndars costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
atLEAF ships an update every 44 months, Calndars every 5 weeks. The most recent releases landed on September 17, 2026 and September 18, 2026 respectively.
| Parameter | atLEAF | Calndars |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 44 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 12.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 26 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | FT GREEN LLC | Geert Jadoul |
In-app purchases
atLEAF
No in-app purchases
Calndars
No in-app purchases









