Comparison

John Blue LBMS vs NozzleCalc

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

John Blue LBMS

Features
Read full description

This is a complementary app for use with John Blue's Liquid Blockage Monitor System. Now you can know your liquid application flow from the cab of your tractor. The patented system alerts you when a ball and flow in an individual row has dropped below a user selected level in a John Blue VisaGage II Flow Monitor. Two different products may be monitored at the same time, and real-time ball position information is relayed to the user. The system communicates via Wi-Fi with the iPad or iPhone, which serves as the control panel and display using this app. Continued use of GPS running in the background can dramatically decrease battery life.

About

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.

Highlights
  • Sprayer setting calculations
  • Droplet size determination
  • PSI calculation
  • Customizable application rate, speed, and spacing
  • Reference section
  • Direct contact to support
Features
Read full description

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.

Screenshots

John Blue LBMS4 screens
NozzleCalc4 screens

Verdict

The call

The clearest difference is update cadence: John Blue LBMS at every 5 months against NozzleCalc's every 49 months. NozzleCalc's advantage is iOS requirement (11.0 vs 13.0). On price, ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

John Blue LBMS ships an update every 5 months, NozzleCalc every 49 months. The most recent releases landed on September 21, 2026 and September 23, 2026 respectively.

Scorecard2 real differences · 7 level
John Blue LBMS versus NozzleCalc: the parameters behind the verdict, then further details
ParameterJohn Blue LBMSNozzleCalc
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 5 months — betterEvery 49 months
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.011.0 — better
Further details — not scored
Size53 MB13 MB
Age rating4+4+
DeveloperAdvanced Systems Technology - John Blue Co.Greenleaf Technologies

In-app purchases

None

John Blue LBMS

No in-app purchases

None

NozzleCalc

No in-app purchases

Questions

Is John Blue LBMS free?
John Blue LBMS is free to download, with no in-app purchases.
Is NozzleCalc free?
NozzleCalc is free to download, with no in-app purchases.
Do John Blue LBMS or NozzleCalc have ads?
Neither John Blue LBMS nor NozzleCalc shows ads.
Which is updated more often, John Blue LBMS or NozzleCalc?
John Blue LBMS ships an update every 5 months, and NozzleCalc every 49 months. Most recently, John Blue LBMS was updated on September 21, 2026 and NozzleCalc on September 23, 2026.

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