PGR Calculator vs Croptune
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
Read full descriptionHide full description
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.
Croptune
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.
- 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
Read full descriptionHide full description
Croptune – Smarter Fertilizing, Right from the Field Just snap a photo of your crops, and Croptune instantly tells you how much nitrogen they really need. No more guessing, no more over-fertilizing. Croptune uses advanced image analysis and big data to give real-time nitrogen insights - straight from the field, in seconds. All results are backed by ISO 17025-certified lab data, so you can trust what you see. Less waste, better yields — with technology made for farmers. Create your own private lab Thanks to Croptune’s easy-to-use method, anyone can have their own laboratory up and running at a click of a button! Croptune saves you precious money and time on costly equipment, hiring experts, and laboratory analysis, while helping you optimize your fertilization protocol according to the actual status in the field. Help protect the environment As any farmer knows, chemical fertilizers can cause serious environmental issues and lead to water, soil, and air pollution. By installing Croptune you will be able to improve your fertilization process and avoid excessive fertilization, thus helping protect the environment while growing healthier produce. How it works? To get started, install the Croptune app and select your crop type. Croptune is currently calibrated to detect deficiencies and issue recommendations for field crops, including corn, wheat, carrot, cotton, lettuce, pepper, tomato, potato, cucumber, onion, and rice and for orchards, which includes avocado, banana, pear, cherry, peach, nectarine and clementine. Next, select your planting or sawing date and planting season and if necessary, modify the number of plants per area. Define your plot by using 4-8 pinpoints and click on the Camera icon. Croptune will open in live video mode. Click on "Add image" to capture 3-5 pictures of the selected plant. Repeat this process on other plants to improve accuracy. Next, click on the Continue button and you will get your recommendations in seconds. Croptune saves your data so that you can access it at any time and review a specific crop’s history to keep track of the status of your field. Now, sit back and relax while you enjoy maximum yields! The next generation of agriculture is already here! Install Croptune today!
Screenshots
Verdict
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.
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. 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 4, 2026 respectively.
| Parameter | PGR Calculator | Croptune |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (4 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | 1 |
| Update frequency | Every 4 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 10.2 — better | 15.0 |
| Further details — not scored | ||
| Size | 17 MB | 147 MB |
| Age rating | 4+ | 4+ |
| Developer | OHP, Inc. | CROPTUNE TECHNOLOGIES LTD |
Customer experience
PGR Calculator
Croptune
In-app purchases
PGR Calculator
No in-app purchases
Croptune
- 1 plan$11.99
- 2 plans$23.99
- 3 plans$35.99
Show 7 moreShow fewer
- 4 plans$47.99
- 5 plans$59.99
- 6 plans$71.99
- 7 plans$83.99
- 8 plans$95.99
- 9 plans$107.99
- 10 plans$109.99









