# FreshAir Sensor vs Crop

The clearest difference is in-app purchases: FreshAir Sensor at none against Crop's 1. FreshAir Sensor also leads on ratings volume (6 vs 2) and iOS requirement (15.2 vs 17.0). Crop's advantage is review sentiment (100% vs 67%) and update cadence (every 10 days vs every 2 months). On price, rating, ads and monetization model there is nothing between them.

Both are free to download. Crop sells 1 one-off in-app purchase. FreshAir Sensor asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for FreshAir Sensor against 5.0 for Crop. Both are backed by a comparable volume of ratings — 6 and 2 respectively. Written reviews are what separate them: 67% of FreshAir Sensor's written reviews are positive against 100% of Crop's.

FreshAir Sensor ships an update every 2 months, Crop every 10 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | FreshAir Sensor | Crop |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (6 ratings)](https://appshunter.io/ios/app/freshair-sensor/id1282065363/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/crop-hydroponic-calculator/id6777968635/reviews) |
| Number of ratings | **6** | 2 |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | Free | Free |
| Size | 72 MB | 1 MB |
| Requires iOS | **15.2** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [FreshAir Sensor](https://appshunter.io/developer/1282065362) | [Roman Kopaliani](https://appshunter.io/developer/1635315269) |

## What reviewers say

### FreshAir Sensor

[App page](https://appshunter.io/ios/app/freshair-sensor/id1282065363)

This application allows you to set up and manage your FreshAir nicotine monitoring device. View real-time smoking alerts and monitor device status directly from your smartphone.

**Highlights:** Install FreshAir nicotine monitoring device, View FreshAir smoking alerts, Monitor device status, Receive real-time notifications

**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 FreshAir Sensor free?

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

### Is Crop free?

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

### Which has better reviews, FreshAir Sensor or Crop?

FreshAir Sensor and Crop are both rated 5.0 out of 5 on the App Store, from 6 and 2 ratings respectively.

### Do FreshAir Sensor or Crop have ads?

Neither FreshAir Sensor nor Crop shows ads.

### Which is updated more often, FreshAir Sensor or Crop?

FreshAir Sensor ships an update every 2 months, and Crop every 10 days. Most recently, FreshAir Sensor was updated on November 3, 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.*