# PGR Calculator

> Calculates plant growth regulator rates for agricultural applications. (iPhone/iPad app by OHP, Inc..)

- Source: https://appshunter.io/ios/app/pgr-calculator/id387478358 (this page in markdown: same URL + `.md`)
- Developer: [OHP, Inc.](https://appshunter.io/developer/387478361)
- Category: Productivity, Business
- Price: Free
- Rating: 3.30/5 from 4 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.2 · 17 MB
- Languages: American English
- Released: 2010-08-23
- Data updated: 2026-06-05
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/pgr-calculator/id387478358/reviews.md

## What is PGR Calculator?

The OHP PGR Calculator takes the guess work out of the equation when it comes to calculating and applying PGRs (Plant Growth Regulants) in the field. 

The OHP PGR Calculator will allow the user to look up current PGR rates in ppm for spray or drench applications. The grower then enters the desired dose and the size of the application area (L x W) or the number of pots for a drench and the application conveniently calculates the amount of solution and product needed.

 "A simple tool like this takes the guess work out of PGR applications and calibration. It's easy and accurate," adds Dave Barcel, Senior Technical Manager - OHP, Inc.

The OHP PGR Calculator also has the ability to access SDS sheets, Labels and other specific information on different OHP PGR products.

## Key features

- Calculate PGR rates for spray applications
- Calculate PGR rates for drench applications
- Enter desired dose and application area
- Calculate solution and product amounts
- Access SDS sheets and product labels

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/pgr-calculator/id387478358/reviews.md

### 5/5 — Great app

*2015-11-26*

Great app. Takes all the guess work out of the calculation

## Frequently asked questions about PGR Calculator

### How does PGR Calculator help with plant growth regulator applications?

PGR Calculator removes the guesswork by calculating exact rates for spray or drench applications. You input your desired dose and the size of your application area, and it computes the necessary solution and product quantities.

### What types of applications can PGR Calculator handle?

PGR Calculator supports both spray applications and drench applications. For drench applications, you can specify the number of pots to ensure accurate calculations.

### Can I access product information through PGR Calculator?

Yes, PGR Calculator provides access to important product information. You can look up SDS sheets, Labels, and other specific details for various OHP PGR products directly within the app.

### What is the rating of PGR Calculator?

PGR Calculator has a rating of 3.3 stars based on 4 user ratings.

### Is PGR Calculator free to use?

Yes, PGR Calculator is available for free, with no in-app purchases or advertisements.

### What devices is PGR Calculator compatible with?

PGR Calculator is supported on iPhone and iPod devices.

### How often is PGR Calculator updated?

The latest version of PGR Calculator is 2.3.1, which was last updated on October 24, 2018. The app was originally released on August 23, 2010.

### What is the age rating for PGR Calculator?

PGR Calculator has an age rating of 4+, making it suitable for a wide range of users.

## Version history (last 5 releases)

### 2.3.1 — 2018-10-24

- Minor copy edit

### 2.3 — 2018-10-19

- Paczol PGR now Pac O
- Updated for iPhone Xs

### 2.2 — 2018-03-02

- Added decimal for Paczol drench/spray calculations
- Removed Augeo PGR
- Added iPhone X support

### 2.1 — 2017-03-20

- Updated icon set

### 2.0 — 2017-03-17

- Complete rebuild
- Compatible down to iOS 8

## Apps similar to PGR Calculator

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [BYK Viscosity Calculator](https://appshunter.io/ios/app/byk-viscosity-calculator/id6748367137) | — | Free | Productivity |

## Related topics

[pgr calculator](https://appshunter.io/ios/topics/pgr-calculator) · [drench](https://appshunter.io/ios/topics/drench)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-05.*