About NPK Calculator
Living beings such as plants require a proper balance, especially of nutrients, for optimal growth. Essential nutrients are necessary for basic functions, and trace nutrients for the best health. Nutrient lock-out can...
Living beings such as plants require a proper balance, especially of nutrients, for optimal growth. Essential nutrients are necessary for basic functions, and trace nutrients for the best health. Nutrient lock-out can occur when the pH is out of balance or when there is too much of a nutrient. Even if overdosing doesn't occur, nutrients can be wasted by adding too much solution per fertilizing cycle. NPK Calculator is an app for optimizing the ratio of macronutrients and micronutrients in your fertilizer solution for use in hydroponics or soil. Our in-app database contains many simple and complex fertilizers in the market. Several nutrition programs by knowledge growers with long-term experience are available in preset tabs. -Save money on fertilizer solution (up to 50%) -Know the ratio of elements available in your solution -Prevent fertilizer burns and nutrient lock-out -Optimize nutrient uptake
Version History Comma separated values input improvement. 2.3 12/26/2025 Minor UI improvements. 2.2 11/09/2025 Minor UI improvements 2.1 11/07/2025 New design with light and dark theme support. Persistent storage improvement. German,Hebrew,Hindi,Portuguese,Russian,Spanish and Ukrainian language support. Bulk calculator feature. 2.0 10/29/2025 This update from Apple will improve the functionality of this app. No new features are included. 1.0 05/16/2015
Previous Versions
Here you can find the changelog of NPK Calculator since it was posted on our website on 2016-10-18 20:16:58.
The latest version is 2.3 and it was updated on 2026-06-23 13:05:13. See below the changes in each version.
NPK Calculator version 2.3
Updated At: 2026-06-02
Changes: Version History Comma separated values input improvement. 2.3 12/26/2025 Minor UI improvements. 2.2 11/09/2025 Minor UI improvements 2.1 11/07/2025 New design with light and dark theme support.
Persistent storage improvement.
German,Hebrew,Hindi,Portuguese,Russian,Spanish and Ukrainian language support.
Bulk calculator feature. 2.0 10/29/2025 This update from Apple will improve the functionality of this app. No new features are included. 1.0 05/16/2015
NPK Calculator version 2.3
Updated At: 2025-12-26
Changes: Comma separated values input improvement.
NPK Calculator version 1.0
Updated At: 2015-05-23
NPK Calculator version 1.0
Updated At: 2015-05-16
Changes: May 16, 2015
Version 1.0
This app has been updated by Apple to display the Apple Watch app icon.
Disclaimer
Official App Store Link
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