# PGR Calculator vs Jacto Smart Control

The clearest difference is review sentiment: PGR Calculator at 100% against Jacto Smart Control's 0%. PGR Calculator also leads on rating (3.3 vs 1.0) and ads (none vs shown). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PGR Calculator holds the better App Store score, 3.3 against 1.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews point the same way: 100% of PGR Calculator's written reviews are positive against 0% of Jacto Smart Control's.

PGR Calculator ships an update every 4 months, Jacto Smart Control every 3 months. The most recent releases landed on October 9, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | PGR Calculator | Jacto Smart Control |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (4 ratings)](https://appshunter.io/ios/app/pgr-calculator/id387478358/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/jacto-smart-control/id1591077121/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | **Free** | Ad-supported |
| Size | 17 MB | 30 MB |
| Requires iOS | **10.2** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [OHP, Inc.](https://appshunter.io/developer/387478361) | [Máquinas Agrícolas Jacto S/A](https://appshunter.io/developer/1083908982) |

## What reviewers say

### PGR Calculator

[App page](https://appshunter.io/ios/app/pgr-calculator/id387478358)

This app simplifies the calculation of plant growth regulators (PGRs) for field applications. It helps users determine the correct rates for spray or drench applications based on desired dosage and area size, ensuring accurate product and solution amounts.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


### Jacto Smart Control

[App page](https://appshunter.io/ios/app/jacto-smart-control/id1591077121)

Connect your smartphone to a battery-powered doser and sprayer to manage agricultural applications. Adjust dosages, map application areas, and generate detailed reports on product usage and operator performance.

**Highlights:** Switch between spray and doser modes, Adjust product dosage, Calibrate doses, Record application history, Generate detailed reports, Track product and operator details

**In-app purchases:** none


## Frequently asked questions

### Is PGR Calculator free?

PGR Calculator is free to download, with no in-app purchases.

### Is Jacto Smart Control free?

Jacto Smart Control is free to download, with no in-app purchases.

### Which has better reviews, PGR Calculator or Jacto Smart Control?

PGR Calculator is rated higher. PGR Calculator averages 3.3 out of 5 from 4 ratings, while Jacto Smart Control averages 1.0 from 1 ratings.

### Do PGR Calculator or Jacto Smart Control have ads?

Jacto Smart Control shows ads; PGR Calculator does not.

### Which is updated more often, PGR Calculator or Jacto Smart Control?

PGR Calculator ships an update every 4 months, and Jacto Smart Control every 3 months. Most recently, PGR Calculator was updated on October 9, 2026 and Jacto Smart Control on October 18, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*