# OneRADON XP vs RadonSketch

The clearest difference is review sentiment: RadonSketch at 100% against OneRADON XP's 33%. RadonSketch also leads on rating (5.0 vs 3.4) and update cadence (monthly vs every 3 months). OneRADON XP's advantage is in-app purchases (none vs 2). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. RadonSketch sells 2 in-app purchases, starting at $49.00 per month. OneRADON XP asks for nothing beyond the download.

RadonSketch holds the better App Store score, 5.0 against 3.4. Both are backed by a comparable volume of ratings — 5 and 3 respectively. Written reviews point the same way: 33% of OneRADON XP's written reviews are positive against 100% of RadonSketch's.

OneRADON XP ships an update every 3 months, RadonSketch monthly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | OneRADON XP | RadonSketch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (5 ratings)](https://appshunter.io/ios/app/oneradon-xp/id6449913979/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/radonsketch/id6751263976/reviews)** |
| Number of ratings | **5** | 3 |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | **Free** | Freemium |
| Size | 57 MB | 67 MB |
| Requires iOS | 16 | **15.6** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SunRADON LLC](https://appshunter.io/developer/1512257786) | [Chad Smith](https://appshunter.io/developer/1840658074) |

## What reviewers say

### OneRADON XP

[App page](https://appshunter.io/ios/app/oneradon-xp/id6449913979)

Connect to and control your radiation monitor via Bluetooth. Start tests, retrieve data automatically, and generate custom PDF inspection reports and invoices. Integrates with cloud services for streamlined workflows.

**Highlights:** Bluetooth monitor connection, One-click test initiation, Customizable test parameters, Automatic data retrieval, Customizable PDF report generation, Integration with cloud services

**Features:** Vision Pro support

**In-app purchases:** none


### RadonSketch

[App page](https://appshunter.io/ios/app/radonsketch/id6751263976)

This tool simplifies radon mitigation workflows by helping professionals design systems, ensure compliance, and generate professional documentation. It streamlines the creation of diagrams, materials lists, and maintenance plans, saving time and reducing errors in the field.

**Highlights:** System Diagram Creator, Compliance Validation, Materials List Generator, OM&M Plan Creation, Secure Recordkeeping, Customizable for Every Job

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $49.00 | per month |
| Pro Annual | $490.00 | per year |


## Frequently asked questions

### Is OneRADON XP free?

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

### Is RadonSketch free?

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

### Which has better reviews, OneRADON XP or RadonSketch?

RadonSketch is rated higher. OneRADON XP averages 3.4 out of 5 from 5 ratings, while RadonSketch averages 5.0 from 3 ratings.

### Do OneRADON XP or RadonSketch have ads?

Neither OneRADON XP nor RadonSketch shows ads.

### Which is updated more often, OneRADON XP or RadonSketch?

OneRADON XP ships an update every 3 months, and RadonSketch monthly. Most recently, OneRADON XP was updated on November 3, 2026 and RadonSketch on October 30, 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.*