Sleek and v useful
Perfect widget and app for quick VPD check multiple times a day.
Been looking for years for a VPD chart that looks and feels like this
Been looking for years for a VPD chart that looks and feels like this
$0.49
About
This utility app helps growers understand Vapor Pressure Deficit (VPD) for optimal plant growth. It features an interactive heatmap and stage presets to guide environmental adjustments. Calculations are performed on-device for privacy.
✓Interactive VPD heatmap
✓Stage-specific VPD ranges
✓Leaf and Air VPD calculation
✓Home and Lock Screen widgets
✓On-device calculations
✓CSV log export
Show original description
What's New in VPD Tool
1.0.5
May 10, 2026
Heatmap improvements - Enlarged on select widget sizes - Improved tap accuracy Performance and stability improvements.
MoreUser reviews
Developer apps
FAQ
What is VPD Tool used for?
VPD Tool helps growers understand and manage Vapor Pressure Deficit (VPD) for optimal plant growth. It provides real-time VPD calculations and recommendations based on temperature and humidity.
How does VPD Tool calculate VPD?
VPD Tool uses the formula VPD = es(T) × (1 − RH/100), considering leaf temperature for leaf VPD and air temperature for air VPD. It also calculates absolute humidity via water vapor partial pressure.
Does VPD Tool require an account?
No, VPD Tool is private by design and performs all calculations on-device. No account or internet connection is required to use its core features.
What devices does VPD Tool support?
VPD Tool is available for iPhone and iPad devices, offering a convenient way to monitor plant environments on the go.
How much does VPD Tool cost?
VPD Tool is a paid application, available for a one-time purchase of $0.49. This provides full access to all its features without ongoing costs.
Can I export my VPD data from VPD Tool?
Yes, VPD Tool allows you to export your logged data to a CSV file. This enables further analysis and record-keeping of your environmental conditions.
How often is VPD Tool updated?
The latest version of VPD Tool is 1.0.5, last updated on May 10, 2026. Updates typically focus on improving features and ensuring compatibility.
What is the age rating for VPD Tool?
VPD Tool has an age rating of 4+, making it suitable for a wide range of users interested in plant care and environmental monitoring.
