# Radoff vs Notturno Sleep

The clearest difference is in-app purchases: Radoff at none against Notturno Sleep's 2. Radoff also leads on iOS requirement (15.6 vs 17.0). Notturno Sleep's advantage is update cadence (every 5 days vs every 5 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Notturno Sleep sells 2 one-off in-app purchases. Radoff asks for nothing beyond the download.

Radoff ships an update every 5 weeks, Notturno Sleep every 5 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Radoff | Notturno Sleep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/radoff/id1607852470/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 81.8% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 5 days** |
| Monetization | Free | — |
| Size | 74 MB | 13 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Radoff S.p.A.](https://appshunter.io/developer/1756269459) | [Nico Emanuelli](https://appshunter.io/developer/6794475529) |

## What reviewers say

### Radoff

[App page](https://appshunter.io/ios/app/radoff/id1607852470)

This app monitors indoor air quality, detecting pollutants like radon, CO2, and VOCs. It provides real-time data, historical trends, and smart notifications to help you create a healthier living environment. Easily understand complex readings and receive actionable tips for improvement.

**Highlights:** Comprehensive indoor monitoring, Real-time data access, Historical data and graphs, Smart notifications and alerts, Easy-to-interpret readings, Smart Home Integration

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

**In-app purchases:** none


### Notturno Sleep

[App page](https://appshunter.io/ios/app/notturno-sleep/id6799518696)

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 7-day Trial | Free | one-time |
| Notturno Lifetime | $6.99 | one-time |


## Frequently asked questions

### Is Radoff free?

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

### Is Notturno Sleep free?

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

### Do Radoff or Notturno Sleep have ads?

Neither Radoff nor Notturno Sleep shows ads.

### Which is updated more often, Radoff or Notturno Sleep?

Radoff ships an update every 5 weeks, and Notturno Sleep every 5 days. Most recently, Radoff was updated on November 3, 2026 and Notturno Sleep 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.*