# PGR Calculator vs Techline Calculator

PGR Calculator and Techline Calculator both sit at 3.3 stars, but that hides the real split: 100% of PGR Calculator's written reviews are positive against 25% of Techline Calculator's. PGR Calculator also leads on iOS requirement (10.2 vs 13.0). Techline Calculator's advantage is update cadence (every 2 months vs every 4 months). On price, rating, ratings volume and ads 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 3.1. Both are backed by a comparable volume of ratings — 4 and 7 respectively. Written reviews point the same way: 100% of PGR Calculator's written reviews are positive against 25% of Techline Calculator's.

PGR Calculator ships an update every 4 months, Techline Calculator every 2 months. The most recent releases landed on October 9, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | PGR Calculator | Techline Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (4 ratings)](https://appshunter.io/ios/app/pgr-calculator/id387478358/reviews)** | [3.1 (7 ratings)](https://appshunter.io/ios/app/techline-calculator/id594292322/reviews) |
| Number of ratings | 4 | **7** |
| Positive reviews | **100.0% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 17 MB | 10 MB |
| Requires iOS | **10.2** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [OHP, Inc.](https://appshunter.io/developer/387478361) | [Visual Impact Technologies Inc.](https://appshunter.io/developer/511035964) |

## 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


### Techline Calculator

[App page](https://appshunter.io/ios/app/techline-calculator/id594292322)

This app assists with landscape design by providing calculations for project supplies, measurements, and dripline placement. It accounts for variables like soil type, plant needs, and irrigation pressure to determine emitter spacing and irrigated area. Results can be saved and recalculated, ensuring adherence to official standards.

**Highlights:** Landscape design calculations, Project supply estimation, Dripline placement guidance, Irrigated area determination, Pressure and flow rate calculations, Emitter spacing computation, Save and recalculate results

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is PGR Calculator free?

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

### Is Techline Calculator free?

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

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

PGR Calculator is rated higher. PGR Calculator averages 3.3 out of 5 from 4 ratings, while Techline Calculator averages 3.1 from 7 ratings.

### Do PGR Calculator or Techline Calculator have ads?

Neither PGR Calculator nor Techline Calculator shows ads.

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

PGR Calculator ships an update every 4 months, and Techline Calculator every 2 months. Most recently, PGR Calculator was updated on October 9, 2026 and Techline Calculator on October 14, 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.*