# RadarScope vs Scentience Sigma

The clearest difference is price: Scentience Sigma at Free against RadarScope's $9.99. Scentience Sigma also leads on rating (5.0 vs 4.2) and in-app purchases (none vs 4). RadarScope's advantage is ratings volume (2.8K vs 1) and chart position (#1 vs unranked). On ads and iOS requirement there is nothing between them.

Scentience Sigma is free to download; RadarScope costs $9.99 up front. RadarScope sells 4 in-app purchases, starting at $9.99 per year. Scentience Sigma asks for nothing beyond the download.

Scentience Sigma holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: RadarScope has 2.8K ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | RadarScope | Scentience Sigma |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [4.2 (2.8K ratings)](https://appshunter.io/ios/app/radarscope/id288419283/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/scentience-sigma/id6756134989/reviews)** |
| Number of ratings | **2.8K** | 1 |
| Positive reviews | 51.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#1** | — |
| Size | 310 MB | 1.7 GB |
| Requires iOS | **16.6** | 17.6 |
| Devices | **iPhone, iPad, Mac, Apple TV, Apple Watch** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Base Velocity, LLC](https://appshunter.io/developer/288419286) | [Kordel France](https://appshunter.io/developer/1215137099) |

## What reviewers say

### RadarScope

[App page](https://appshunter.io/ios/app/radarscope/id288419283)

**Currently charting:** #1 Top Paid · Weather, #10 Top Grossing · Weather, #53 Top Paid (US App Store)

Visualize professional-grade weather radar data with advanced tools for meteorologists, storm spotters, and enthusiasts. Access real-time radar information, severe weather alerts, and historical data with optional subscription tiers for enhanced capabilities.

**Highlights:** Single-site radar data visualization, Severe weather alerts and warnings, NWS-generated storm tracks, Historical radar data archive, GOES satellite products, Multi-Radar Multi-Sensor products

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Tier 1 | $9.99 | per year |
| Pro Tier 2 | $14.99 | per month |
| Pro Tier 2 | $99.99 | per year |
| RadarScope Pro Subscription | $9.99 | one-time |

**What reviewers like**

- 🚀 Excellent radar app
- 🔍 Detailed radar data and features
- ⚡ Lightning detection
- 📍 Accurate location tracking
- 🌪️ Helpful for storm tracking and chasing

**What reviewers complain about**

- 💰 Expensive with additional subscription fees
- 🗺️ Limited map details without subscription
- 🕰️ Radar data can be delayed
- 🇨🇦 Limited support for Canadian users
- 🤔 Steep learning curve for novice users

**Reported bugs**

- Subscription issues and failed purchases
- Inconsistent radar updates and connectivity problems
- Apple Watch app limitations and bugs

**Requested features**

- Winter weather advisories and precipitation coloring
- Ability to view multiple radars simultaneously
- More detailed road maps
- Archived radar data access
- Customizable alert colors and notifications


### Scentience Sigma

[App page](https://appshunter.io/ios/app/scentience-sigma/id6756134989)

This app collects multimodal data, including olfactory and chemical information, to help build world models for AI and robotics. It fuses six data types into a single stream for research purposes. The app includes machine learning models to identify and associate sensory data.

**Highlights:** Multimodal data fusion (olfaction, vision, audio, language, inertial, environmental), Time-aligned temporal data stream, Machine learning models for identification and association, Supports open community initiative for AI advancement, Standardized data capture protocols, Optional contribution to open research dataset

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RadarScope free?

RadarScope costs $9.99, and also offers in-app purchases.

### Is Scentience Sigma free?

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

### Which has better reviews, RadarScope or Scentience Sigma?

Scentience Sigma is rated higher. RadarScope averages 4.2 out of 5 from 2.8K ratings, while Scentience Sigma averages 5.0 from 1 ratings.

### Do RadarScope or Scentience Sigma have ads?

Neither RadarScope nor Scentience Sigma shows ads.

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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.*