NozzleCalc vs Shivvers Auto
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NozzleCalc
Quickly calculate sprayer settings for specific nozzles on the go. Determine optimum droplet size and PSI for your applications. Includes a reference section and direct contact to support.
- Sprayer setting calculations
- Droplet size determination
- PSI calculation
- Customizable application rate, speed, and spacing
- Reference section
- Direct contact to support
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Now you can quickly calculate sprayer settings for TurboDrop and AirMix nozzles anywhere with the official Greenleaf Technologies Nozzle Calculator app. Determine optimum droplet size and PSI for all your applications on-the-go and spray with confidence. If you use Greenleaf Technologies spray nozzles for your applications this is the app you shouldn't be without! This is the simplest and most accurate nozzle calculator app for Greenleaf nozzles. See the droplet size each nozzle size generates at a variety of precise pressures. Customize by setting your application rate (gal/ac), speed (mph), spacing (inches), and flowrate (gal/min). The reference section provides additional product info and industry terminology. Speak directly to a knowledgeable Greenleaf Technologies representative with a touch with the autodial contact feature.
Shivvers Auto
Remotely manage and monitor your grain bin's drying process and moisture levels from anywhere. Requires an installed Shivvers system for full functionality.
- Remote grain bin drying control
- Moisture content monitoring
- Global accessibility
- Requires installed Shivvers system
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The Shivvers connect app allows you to control your grain bin's drying and monitor it's moisture content from any where in the world with an installed system.
Screenshots
Verdict
The clearest difference is update cadence: Shivvers Auto at monthly against NozzleCalc's every 49 months. NozzleCalc's advantage is iOS requirement (11.0 vs 15.1). On price, rating, ratings volume 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.
On the App Store both sit at effectively the same score — 5.0 for NozzleCalc against 5.0 for Shivvers Auto. Both are backed by a comparable volume of ratings — 1 and 2 respectively.
NozzleCalc ships an update every 49 months, Shivvers Auto monthly. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.
| Parameter | NozzleCalc | Shivvers Auto |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (2 ratings) |
| Number of ratings | 1 | 2 — better |
| Update frequency | Every 49 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 13 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | Greenleaf Technologies | Shivvers Technology & Innovation Group, LLC |
Customer experience
NozzleCalc
Shivvers Auto
In-app purchases
NozzleCalc
No in-app purchases
Shivvers Auto
No in-app purchases
