# CompactiMa EC pH Calibration vs Crop

The clearest difference is in-app purchases: CompactiMa EC pH Calibration at none against Crop's 1. CompactiMa EC pH Calibration also leads on iOS requirement (9.3 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Crop sells 1 one-off in-app purchase. CompactiMa EC pH Calibration asks for nothing beyond the download.

## The numbers

| Metric | CompactiMa EC pH Calibration | Crop |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/crop-hydroponic-calculator/id6777968635/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 10 days |
| Monetization | — | Free |
| Size | 28 MB | 1 MB |
| Requires iOS | **9.3** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ridder Growing Solutions Holding B.V.](https://appshunter.io/developer/917679493) | [Roman Kopaliani](https://appshunter.io/developer/1635315269) |

## What reviewers say

### CompactiMa EC pH Calibration

[App page](https://appshunter.io/ios/app/compactima-ec-ph-calibration/id1192664337)

**Features:** macOS Compatibility

**In-app purchases:** none


### Crop

[App page](https://appshunter.io/ios/app/crop-hydroponic-calculator/id6777968635)

This app calculates hydroponic nutrient recipes for various plants and growth stages, citing primary research sources. It helps growers determine salt weights for specific reservoir volumes and track EC/pH levels.

**Highlights:** Plant and stage-specific nutrient targets, Cited primary source recipes, Branded nutrient solution recipes, Target to salt-weight solver, Reverse calculation for used salts, Multi-reservoir EC/pH logging, Shareable mix sheets

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Crop Pro (lifetime) | $4.99 | one-time |


## Frequently asked questions

### Is CompactiMa EC pH Calibration free?

CompactiMa EC pH Calibration is free to download, with no in-app purchases.

### Is Crop free?

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

### Do CompactiMa EC pH Calibration or Crop have ads?

Neither CompactiMa EC pH Calibration nor Crop shows ads.

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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.*