Tornado Radar vs Stars Units Sizes Objects
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tornado Radar
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.
- Discover campus events
- Filter by organization
- Filter by activity
- Add events to calendar
- Increase student engagement
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Use the Concordia University - Texas Events app to find out what events are happening and find out how you can get involved on campus! • Sort by campus organizations hosting events • Find events tagged with your favorite activities • Add events to your calendar so you don’t miss out! Powered by Presence. Presence provides a web and mobile platform to universities and colleges to help increase student engagement, assess involvement, allocate funding efficiently, and improve retention through simplifying and digitizing processes, collecting, structuring, and analyzing involvement data, and provides tools to help reach and engage more students.
Stars Units Sizes Objects
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.
- 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
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Size of the smallest to largest objects and stars. Compare the size of objects in the universe. Object images. Pinch/Zoom image. Pan/Move image. Rotate image. Double tap to reset an image. From the smallest to the largest one. From planck length to observable universe. From Yoctometre, Zeptometre, Attometre, Femtometre, Picometre, Nanometre, Micro, Millimetre, Centimetre, Metre, KiloMetre, Lightyear, Parsecs, Billion Lightyears to 93 Billion Lightyears. Size of objects, particles, atoms, cells, stars and galaxies. Get to know the stars. Get to know the spaces. get to know the universe. How small is this world. How big is the universe. And How great is the creator. How far is the star distance from earth. Two way 18 distance unit conversion. planck length, yoctometer, zeptometer, attometer, femtometer, picometre, nanometre, micrometre, Millimeter, Centimeter, Meter, Kilometer, Inch, Foot, Mile, Astronomical, Lightyear, Parsecs. Perform auto conversion when picker is changed. Share conversion result. Reset unit convertor.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Tornado Radar | Stars Units Sizes Objects |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | 4.2 (5 ratings) |
| Positive reviews | 100.0% of reviews — better | 80.0% of reviews |
| Number of ratings | 4 | 5 — better |
| Update frequency | Every 5 months | Every 4 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 11.0 | 11.0 |
| Further details — not scored | ||
| Size | 9 MB | 124 MB |
| Age rating | 4+ | 4+ |
| Developer | Check I'm Here, LLC | Mudarmeen Munlin |
Customer experience
Tornado Radar
Stars Units Sizes Objects
In-app purchases
Tornado Radar
No in-app purchases
Stars Units Sizes Objects
No in-app purchases
Questions
Is Tornado Radar free?
Is Stars Units Sizes Objects free?
Which has better reviews, Tornado Radar or Stars Units Sizes Objects?
Do Tornado Radar or Stars Units Sizes Objects have ads?
Which is updated more often, Tornado Radar or Stars Units Sizes Objects?
Other comparisons
