# Spray Nozzle calculator vs MaintenanceMate

The clearest difference is in-app purchases: Spray Nozzle calculator at none against MaintenanceMate's 1. Spray Nozzle calculator also leads on iOS requirement (8.4 vs 17.6). MaintenanceMate's advantage is update cadence (every 8 days vs every 31 months). On price, ads and device support there is nothing between them.

Both are free to download. MaintenanceMate sells 1 in-app purchase, starting at $2.99 per month. Spray Nozzle calculator asks for nothing beyond the download.

Spray Nozzle calculator ships an update every 31 months, MaintenanceMate every 8 days. The most recent releases landed on October 21, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Spray Nozzle calculator | MaintenanceMate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/spray-nozzle-calculator/id374184560/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 31 months | **Every 8 days** |
| Monetization | Free | — |
| Size | 0 MB | 35 MB |
| Requires iOS | **8.4** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [CCIC Pty Ltd](https://appshunter.io/developer/374184563) | [Amery Drage](https://appshunter.io/developer/1784179362) |

## What reviewers say

### Spray Nozzle calculator

[App page](https://appshunter.io/ios/app/spray-nozzle-calculator/id374184560)

Calculates the correct spray nozzle size and operating pressure for hay balers to accurately apply liquid preservatives. Input operating conditions, dose rate, moisture, and tons per hour to determine the optimal nozzle color and pressure.

**Highlights:** Nozzle size and pressure calculation, Preservative application for hay balers, Input operating conditions, Dose rate calculation, Moisture and TPH input, Nozzle color determination

**Features:** macOS Compatibility

**In-app purchases:** none


### MaintenanceMate

[App page](https://appshunter.io/ios/app/maintenancemate/id6740740411)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MaintenanceMate Pro | $2.99 | per month |


## Frequently asked questions

### Is Spray Nozzle calculator free?

Spray Nozzle calculator is free to download, with no in-app purchases.

### Is MaintenanceMate free?

MaintenanceMate is free to download, with in-app purchases available.

### Do Spray Nozzle calculator or MaintenanceMate have ads?

Neither Spray Nozzle calculator nor MaintenanceMate shows ads.

### Which is updated more often, Spray Nozzle calculator or MaintenanceMate?

Spray Nozzle calculator ships an update every 31 months, and MaintenanceMate every 8 days. Most recently, Spray Nozzle calculator was updated on October 21, 2026 and MaintenanceMate on October 20, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*