# NPK Calculator vs RichChip Beta

The clearest difference is price: RichChip Beta at Free against NPK Calculator's $2.99. RichChip Beta also leads on iOS requirement (13.0 vs 18.5). NPK Calculator's advantage is rating (3.3 vs 1.0) and update cadence (monthly vs every 3 months). On ads, in-app purchases and device support there is nothing between them.

RichChip Beta 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 1.0. That said, the two scores are not equally well evidenced: NPK Calculator has 8 ratings behind it against 1, so its average is the more settled of the two.

NPK Calculator ships an update monthly, RichChip Beta every 3 months. The most recent releases landed on October 18, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | NPK Calculator | RichChip Beta |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[3.3 (8 ratings)](https://appshunter.io/ios/app/npk-calculator/id988554060/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/richchip-beta/id1598287439/reviews) |
| Number of ratings | **8** | 1 |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Paid | **Free** |
| Size | 3 MB | 54 MB |
| Requires iOS | 18.5 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Anton Simonov](https://appshunter.io/developer/988554059) | [MYTEK  CORP.](https://appshunter.io/developer/1598287441) |

## 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


### RichChip Beta

[App page](https://appshunter.io/ios/app/richchip-beta/id1598287439)

Control and update your RC100 device with this app. Monitor battery, firmware, and settings. Record and play audio, including encrypted files.

**Highlights:** Monitor RC100 device status, Update device firmware, General and encrypted audio recording, Modify recording and control options, Play audio files

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NPK Calculator free?

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

### Is RichChip Beta free?

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

### Which has better reviews, NPK Calculator or RichChip Beta?

NPK Calculator is rated higher. NPK Calculator averages 3.3 out of 5 from 8 ratings, while RichChip Beta averages 1.0 from 1 ratings.

### Do NPK Calculator or RichChip Beta have ads?

Neither NPK Calculator nor RichChip Beta shows ads.

### Which is updated more often, NPK Calculator or RichChip Beta?

NPK Calculator ships an update monthly, and RichChip Beta every 3 months. Most recently, NPK Calculator was updated on October 18, 2026 and RichChip Beta on October 1, 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.*