# NPK Calculator vs Fitleaf

The clearest difference is price: Fitleaf at Free against NPK Calculator's $2.99. Fitleaf also leads on iOS requirement (9.0 vs 18.5). NPK Calculator's advantage is rating (3.3 vs 2.6) and review sentiment (33% vs 0%). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

Fitleaf is free to download; NPK Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

NPK Calculator holds the better App Store score, 3.3 against 2.6. Both are backed by a comparable volume of ratings — 8 and 5 respectively. Written reviews point the same way: 33% of NPK Calculator's written reviews are positive against 0% of Fitleaf's.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | NPK Calculator | Fitleaf |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[3.3 (8 ratings)](https://appshunter.io/ios/app/npk-calculator/id988554060/reviews)** | [2.6 (5 ratings)](https://appshunter.io/ios/app/fitleaf/id1448778039/reviews) |
| Number of ratings | **8** | 5 |
| Positive reviews | **33.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Paid | **Free** |
| Size | 3 MB | 101 MB |
| Requires iOS | 18.5 | **9.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Anton Simonov](https://appshunter.io/developer/988554059) | [Fitleaf LLC](https://appshunter.io/developer/1448778038) |

## What reviewers say

### NPK Calculator

[App page](https://appshunter.io/ios/app/npk-calculator/id988554060)

This app helps optimize fertilizer solutions for plants by calculating the correct ratios of macronutrients and micronutrients. It aims to save money, prevent nutrient imbalances, and improve nutrient uptake for healthier plant growth in hydroponics or soil.

**Highlights:** Optimizes macronutrient and micronutrient ratios, Database of fertilizers, Nutrition programs from experienced growers, Saves money on fertilizer solutions, Prevents fertilizer burns and nutrient lock-out, Optimizes nutrient uptake

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

**In-app purchases:** none


### Fitleaf

[App page](https://appshunter.io/ios/app/fitleaf/id1448778039)

This app helps growers optimize crop performance with technical knowledge and a specialized calculator. It provides tailored nutrient formulas for hydroponic and soil-based growing, promoting healthier lifestyles and sustainability.

**Highlights:** Crop-specific nutrient formulas, FitNute Calculator for precision, Hydroponic and soil-based growing support, Nutrient program management dashboard, Visualize phenological stages, Export nutrition programs as PDF

**In-app purchases:** none


## Frequently asked questions

### Is NPK Calculator free?

NPK Calculator costs $2.99, with no in-app purchases.

### Is Fitleaf free?

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

### Which has better reviews, NPK Calculator or Fitleaf?

NPK Calculator is rated higher. NPK Calculator averages 3.3 out of 5 from 8 ratings, while Fitleaf averages 2.6 from 5 ratings.

### Do NPK Calculator or Fitleaf have ads?

Neither NPK Calculator nor Fitleaf shows ads.

### Which is updated more often, NPK Calculator or Fitleaf?

NPK Calculator ships an update monthly, and Fitleaf monthly. Most recently, NPK Calculator was updated on October 24, 2026 and Fitleaf on October 6, 2026.

---

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