# Fertilizer Calc App vs Citizen Buddy

The clearest difference is in-app purchases: Citizen Buddy at none against Fertilizer Calc App's 2. Fertilizer Calc App's advantage is update cadence (every 2 months vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Fertilizer Calc App sells 2 in-app purchases, starting at $1.99 per month. Citizen Buddy asks for nothing beyond the download.

Fertilizer Calc App ships an update every 2 months, Citizen Buddy every 5 months. The most recent releases landed on October 18, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Fertilizer Calc App | Citizen Buddy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/fertilizer-calc-app/id1450299266/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 62 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Alberto Giambone](https://appshunter.io/developer/1412648174) | [VMax E-Solutions India Private Limited](https://appshunter.io/developer/1846826570) |

## What reviewers say

### Fertilizer Calc App

[App page](https://appshunter.io/ios/app/fertilizer-calc-app/id1450299266)

This app helps farmers precisely calculate fertilization needs for their crops. Users can input field details, set fertilization targets for key nutrients like N, P, and K, and determine the required application rates per hectare. It also supports custom area units for flexible calculations.

**Highlights:** Calculate N, P, K, MG, CA needs per field, Set fertilization targets, Determine Kg/Ha for each element, Add custom area units, Supports multiple custom units with Pro membership

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Custom Area Unit | $1.99 | per month |
| Custom Area Unit | $9.99 | per year |


### Citizen Buddy

[App page](https://appshunter.io/ios/app/citizen-buddy/id6754164793)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fertilizer Calc App free?

Fertilizer Calc App is free to download, with in-app purchases available.

### Is Citizen Buddy free?

Citizen Buddy is free to download, with no in-app purchases.

### Do Fertilizer Calc App or Citizen Buddy have ads?

Neither Fertilizer Calc App nor Citizen Buddy shows ads.

### Which is updated more often, Fertilizer Calc App or Citizen Buddy?

Fertilizer Calc App ships an update every 2 months, and Citizen Buddy every 5 months. Most recently, Fertilizer Calc App was updated on October 18, 2026 and Citizen Buddy on October 30, 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.*