# Tornado Radar vs Stars Units Sizes Objects

The clearest difference is rating: Tornado Radar at 5.0 against Stars Units Sizes Objects's 4.2. Tornado Radar also leads on ads (none vs shown) and review sentiment (100% vs 80%). On price, ratings volume, update cadence 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.

Tornado Radar holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 4 and 5 respectively. Written reviews point the same way: 100% of Tornado Radar's written reviews are positive against 80% of Stars Units Sizes Objects's.

Tornado Radar ships an update every 5 months, Stars Units Sizes Objects every 4 months. The most recent releases landed on October 12, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Tornado Radar | Stars Units Sizes Objects |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/tornado-radar/id1528215835/reviews)** | [4.2 (5 ratings)](https://appshunter.io/ios/app/stars-units-sizes-objects/id1576148571/reviews) |
| Number of ratings | 4 | **5** |
| Positive reviews | **100.0% of reviews** | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 4 months** |
| Monetization | **Free** | Ad-supported |
| Size | 9 MB | 124 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Check I'm Here, LLC](https://appshunter.io/developer/575538390) | [Mudarmeen Munlin](https://appshunter.io/developer/1348165664) |

## What reviewers say

### Tornado Radar

[App page](https://appshunter.io/ios/app/tornado-radar/id1528215835)

Discover campus events and ways to get involved. Filter by organization or activity, and add events to your personal calendar to ensure you don't miss out on university happenings.

**Highlights:** Discover campus events, Filter by organization, Filter by activity, Add events to calendar, Increase student engagement

**Features:** macOS Compatibility

**In-app purchases:** none


### Stars Units Sizes Objects

[App page](https://appshunter.io/ios/app/stars-units-sizes-objects/id1576148571)

Explore the vastness of the universe, from the smallest particles to the largest cosmic structures. Compare object sizes, view detailed images, and perform unit conversions across a wide range of astronomical scales. Learn about stars, galaxies, and the incredible distances between them.

**Highlights:** Compare object sizes, View object images, Pinch/Zoom and Pan images, Unit conversion for distances, Explore scales from Planck length to observable universe, Learn about stars and galaxies

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Tornado Radar free?

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

### Is Stars Units Sizes Objects free?

Stars Units Sizes Objects is free to download, with no in-app purchases.

### Which has better reviews, Tornado Radar or Stars Units Sizes Objects?

Tornado Radar is rated higher. Tornado Radar averages 5.0 out of 5 from 4 ratings, while Stars Units Sizes Objects averages 4.2 from 5 ratings.

### Do Tornado Radar or Stars Units Sizes Objects have ads?

Stars Units Sizes Objects shows ads; Tornado Radar does not.

### Which is updated more often, Tornado Radar or Stars Units Sizes Objects?

Tornado Radar ships an update every 5 months, and Stars Units Sizes Objects every 4 months. Most recently, Tornado Radar was updated on October 12, 2026 and Stars Units Sizes Objects on September 22, 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.*