| Developer: | Nicholas Hwang (1) | ||
| Price: | Free | ||
| Rankings: | 0 | ||
| Reviews: | 0 Write a Review | ||
| Lists: | 0 + 0 | ||
| Points: | 0 + 1 (5.0) ¡ | ||
| App Store | |||
Description
Enter temperature & humidity (or tap the interactive heatmap) to see Leaf VPD and Air VPD with scientifically labeled isolines. Choose Seedling / Veg / Flower / Late Flowering to see target VPD ranges and how best to nudge your environment to “ideal.”
Why growers love it
• Interactive heatmap: drag to explore temperature–humidity combos
• Stage presets: recommended VPD bands by plant development stage
• Leaf vs Air: leaf–air offset, dew point, absolute humidity
• Beautiful widgets: small/medium/large Home & Lock Screen widgets
• Private by design: on-device calculations, no account required
Details
• VPD = es(T) × (1 − RH/100); leaf VPD uses leaf temperature (air + ΔT)
• Absolute humidity via water vapor partial pressure (ideal gas law)
• Full support for °C/°F, metric/imperial
• Export logs to CSV
Support
Questions or feedback: support@nicksberryfarm.com
What's new
- Version: 1.0.1
- Updated:
- This release standardizes unit handling and expands modeling flexibility.
• Consistent Imperial-unit presentation across views and widgets
• Widget configuration now includes unit selection
• Leaf–air temperature differential (ΔT) supports negative values to represent cooler-leaf conditions
Price
- Today: Free
- Minimum: Free
- Maximum: Free
Track prices
Developer
- Nicholas Hwang
- Platforms: iOS Apps (1)
- Lists: 0 + 0
- Points: 0 + 1 ¡
- Rankings: 0
- Reviews: 0
- Discounts: 0
- Videos: 0
- RSS: Subscribe
Points
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Reviews
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Additional Information
Contacts
https://www.nicksberryfarm.com/vpd-tool/ «VPD Tool» is a Utilities app for iOS, developed by «Nicholas Hwang». It was first released on and last updated on . This app is currently free to download. This app has not yet received any ratings or reviews on AppAgg. On App Store, the current store rating is 5.0 based on 1 votes. Available languages: Chinese, French, Japanese, Portuguese, Spanish. AppAgg continuously tracks the price history, ratings, and user feedback for «VPD Tool». Subscribe to this app or follow its RSS feed to get notified about future discounts or updates.
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