# PGR Calculator vs TEAMSTAR

The clearest difference is update cadence: TEAMSTAR at every 3 weeks against PGR Calculator's every 4 months. PGR Calculator's advantage is iOS requirement (10.2 vs 15.6). On price, ads, 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 ships an update every 4 months, TEAMSTAR every 3 weeks. The most recent releases landed on October 23, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | PGR Calculator | TEAMSTAR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (4 ratings)](https://appshunter.io/ios/app/pgr-calculator/id387478358/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 17 MB | 27 MB |
| Requires iOS | **10.2** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [OHP, Inc.](https://appshunter.io/developer/387478361) | [d3.net internet-technologien gmbh](https://appshunter.io/developer/1638078802) |

## 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


### TEAMSTAR

[App page](https://appshunter.io/ios/app/teamstar/id6450496568)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PGR Calculator free?

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

### Is TEAMSTAR free?

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

### Do PGR Calculator or TEAMSTAR have ads?

Neither PGR Calculator nor TEAMSTAR shows ads.

### Which is updated more often, PGR Calculator or TEAMSTAR?

PGR Calculator ships an update every 4 months, and TEAMSTAR every 3 weeks. Most recently, PGR Calculator was updated on October 23, 2026 and TEAMSTAR on October 8, 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.*