PGR Calculator vs Phytech Frost
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PGR Calculator
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.
- 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
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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.
Phytech Frost
This application continuously monitors ambient temperature to provide real-time frost alerts. Receive instant push notifications to protect your assets from freezing conditions.
- Continuous temperature measuring
- Real-time push notifications
- Frost alerts
- Temperature monitoring
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Our frost alert application implements continuous temperature measuring, providing real time push notifications
Screenshots
Verdict
The clearest difference is rating: PGR Calculator at 3.3 against Phytech Frost's 3.0. PGR Calculator also leads on iOS requirement (10.2 vs 15.1). On price, ratings volume, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 3.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively.
PGR Calculator ships an update every 4 months, Phytech Frost every 3 months. The most recent releases landed on October 23, 2026 and October 15, 2026 respectively.
| Parameter | PGR Calculator | Phytech Frost |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (4 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | 2 |
| Update frequency | Every 4 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 10.2 — better | 15.1 |
| Further details — not scored | ||
| Size | 17 MB | 75 MB |
| Age rating | 4+ | 4+ |
| Developer | OHP, Inc. | Phytech, LTD |
Customer experience
PGR Calculator
Phytech Frost
In-app purchases
PGR Calculator
No in-app purchases
Phytech Frost
No in-app purchases
