# PGR Calculator vs Croptune

The clearest difference is rating: Croptune at 5.0 against PGR Calculator's 3.3. Croptune also leads on update cadence (every 2 weeks vs every 4 months). PGR Calculator's advantage is in-app purchases (none vs 10) and ratings volume (4 vs 1). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Croptune sells 10 one-off in-app purchases. PGR Calculator asks for nothing beyond the download.

Croptune holds the better App Store score, 5.0 against 3.3. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

PGR Calculator ships an update every 4 months, Croptune every 2 weeks. The most recent releases landed on October 9, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | PGR Calculator | Croptune |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (4 ratings)](https://appshunter.io/ios/app/pgr-calculator/id387478358/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/croptune-nutrient-analyzer/id1597134512/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 17 MB | 146 MB |
| Requires iOS | **10.2** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [OHP, Inc.](https://appshunter.io/developer/387478361) | [CROPTUNE TECHNOLOGIES LTD](https://appshunter.io/developer/1761038994) |

## 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


### Croptune

[App page](https://appshunter.io/ios/app/croptune-nutrient-analyzer/id1597134512)

Instantly analyze crop nutrient needs by taking photos. Get real-time nitrogen insights backed by certified lab data to optimize fertilization, reduce waste, and improve yields. This tool helps farmers protect the environment by preventing over-fertilization.

**Highlights:** Instant photo-based nutrient analysis, Real-time nitrogen level insights, ISO 17025-certified lab data backing, Optimized fertilization recommendations, Environmental protection features, Crop history tracking

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 plan | $11.99 | one-time |
| 2 plans | $23.99 | one-time |
| 3 plans | $35.99 | one-time |
| 4 plans | $47.99 | one-time |
| 5 plans | $59.99 | one-time |
| 6 plans | $71.99 | one-time |
| 7 plans | $83.99 | one-time |
| 8 plans | $95.99 | one-time |
| 9 plans | $107.99 | one-time |
| 10 plans | $109.99 | one-time |


## Frequently asked questions

### Is PGR Calculator free?

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

### Is Croptune free?

Croptune is free to download, with in-app purchases available.

### Which has better reviews, PGR Calculator or Croptune?

Croptune is rated higher. PGR Calculator averages 3.3 out of 5 from 4 ratings, while Croptune averages 5.0 from 1 ratings.

### Do PGR Calculator or Croptune have ads?

Neither PGR Calculator nor Croptune shows ads.

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

PGR Calculator ships an update every 4 months, and Croptune every 2 weeks. Most recently, PGR Calculator was updated on October 9, 2026 and Croptune on October 20, 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.*