# HydroponicsCalc vs Crop

The clearest difference is price: Crop at Free against HydroponicsCalc's $1.99. Crop also leads on update cadence (every 10 days vs every 4 months). HydroponicsCalc's advantage is in-app purchases (none vs 1). On rating, ratings volume, ads and device support there is nothing between them.

Crop is free to download; HydroponicsCalc costs $1.99 up front. Crop sells 1 one-off in-app purchase. HydroponicsCalc asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for HydroponicsCalc against 5.0 for Crop. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

HydroponicsCalc ships an update every 4 months, Crop every 10 days. The most recent releases landed on October 23, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | HydroponicsCalc | Crop |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/hydroponicscalc/id6775172331/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/crop-hydroponic-calculator/id6777968635/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 10 days** |
| Monetization | Paid | **Free** |
| Size | 3 MB | 1 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Douglas Stieber](https://appshunter.io/developer/6771586128) | [Roman Kopaliani](https://appshunter.io/developer/1635315269) |

## What reviewers say

### HydroponicsCalc

[App page](https://appshunter.io/ios/app/hydroponicscalc/id6775172331)

Manage your hydroponic garden with this comprehensive tool. Track reservoir levels, mix nutrients precisely, calculate pH and VPD, and document your grow with a journal and harvest log. Supports both US and metric units.

**Highlights:** Reservoir management dashboard, Concentrate and EC mixing calculators, pH and VPD calculators, Grow journal with photo timeline, Harvest log and ROI dashboard, Light schedule tracker, US & Metric unit support

**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 HydroponicsCalc free?

HydroponicsCalc costs $1.99, with no in-app purchases.

### Is Crop free?

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

### Which has better reviews, HydroponicsCalc or Crop?

HydroponicsCalc and Crop are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do HydroponicsCalc or Crop have ads?

Neither HydroponicsCalc nor Crop shows ads.

### Which is updated more often, HydroponicsCalc or Crop?

HydroponicsCalc ships an update every 4 months, and Crop every 10 days. Most recently, HydroponicsCalc was updated on October 23, 2026 and Crop on October 31, 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.*