# Growsafe Knapsack Spray Calc vs Tabula Farmer App

The clearest difference is update cadence: Tabula Farmer App at every 9 months against Growsafe Knapsack Spray Calc's every 92 months. Growsafe Knapsack Spray Calc's advantage is iOS requirement (12.0 vs 16.4). On price, ads, in-app purchases and device support there is nothing between them.

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

Growsafe Knapsack Spray Calc ships an update every 92 months, Tabula Farmer App every 9 months. The most recent releases landed on October 21, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Growsafe Knapsack Spray Calc | Tabula Farmer App |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 92 months | **Every 9 months** |
| Monetization | Free | — |
| Size | 19 MB | 43 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Groundtruth Limited](https://appshunter.io/developer/894469722) | [TracMap](https://appshunter.io/developer/1338597371) |

## What reviewers say

### Growsafe Knapsack Spray Calc

[App page](https://appshunter.io/ios/app/growsafe-knapsack-spray-calc/id1198797228)

Calculate the precise amount of agrichemical product needed for your spray tank to achieve a specific concentration. This tool simplifies complex calculations for agricultural applications.

**Highlights:** Calculate agrichemical product amounts, Achieve target spray concentrations, Simplify spray tank calculations, Designed for agricultural use

**Features:** macOS Compatibility

**In-app purchases:** none


### Tabula Farmer App

[App page](https://appshunter.io/ios/app/tabula-farmer-app/id1524720101)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Growsafe Knapsack Spray Calc free?

Growsafe Knapsack Spray Calc is free to download, with no in-app purchases.

### Is Tabula Farmer App free?

Tabula Farmer App is free to download, with no in-app purchases.

### Do Growsafe Knapsack Spray Calc or Tabula Farmer App have ads?

Neither Growsafe Knapsack Spray Calc nor Tabula Farmer App shows ads.

### Which is updated more often, Growsafe Knapsack Spray Calc or Tabula Farmer App?

Growsafe Knapsack Spray Calc ships an update every 92 months, and Tabula Farmer App every 9 months. Most recently, Growsafe Knapsack Spray Calc was updated on October 21, 2026 and Tabula Farmer App on October 10, 2026.

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