# RadonEye+² vs iCAR

The clearest difference is review sentiment: iCAR at 45% against RadonEye+²'s 0%. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

RadonEye+² ships an update monthly, iCAR every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | RadonEye+² | iCAR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (3 ratings)](https://appshunter.io/ios/app/radoneye-plus/id1441638944/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | **45.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free | Free |
| Size | 59 MB | 20 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FTLab](https://appshunter.io/developer/897369751) | [KJ RND](https://appshunter.io/developer/1596241462) |

## What reviewers say

### RadonEye+²

[App page](https://appshunter.io/ios/app/radoneye-plus/id1441638944)

This mobile application connects with the RadonEye+² radon detector to monitor radon levels. View logged data, download historical measurements, and visualize radon concentration over time with graphs.

**Highlights:** Connects with RadonEye+² detector, Monitor radon measurements, Download log data, View historical data graphs, Track radon concentration over time

**Features:** macOS Compatibility

**In-app purchases:** none


### iCAR

[App page](https://appshunter.io/ios/app/icar-connect/id1596241460)

Remotely control and monitor your vehicle's functions, including starting the engine, locking/unlocking doors, and activating hazard lights. Check real-time vehicle status like battery voltage and door lock status. Customize settings for remote start and other features.

**Highlights:** Remote engine start/stop, Remote door lock/unlock, Hazard light/horn activation, Real-time vehicle status check, Adjustable remote start duration, Vehicle password registration

**In-app purchases:** none


## Frequently asked questions

### Is RadonEye+² free?

RadonEye+² is free to download, with no in-app purchases.

### Is iCAR free?

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

### Do RadonEye+² or iCAR have ads?

Neither RadonEye+² nor iCAR shows ads.

### Which is updated more often, RadonEye+² or iCAR?

RadonEye+² ships an update monthly, and iCAR every 2 months. Most recently, RadonEye+² was updated on November 2, 2026 and iCAR on November 3, 2026.

---

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