PaleoEarth Lite vs Stars Units Sizes Objects
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PaleoEarth Lite
Explore Earth's dynamic history over the last 50 million years. Visualize tectonic plate movement, track asteroid impacts, and compare past climate data to present-day values. See how country borders have shifted through geological time.
- Continental plate motion visualization
- Asteroid impact tracking
- Earth temperature and CO2 comparison
- Historical country border tracing
- 50 million years of geological data
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Earth is a dynamic planet. If anything has been constant throughout Earth history, it is its relentless state of flux -- from the ceaseless motion of tectonic plates to the ever-changing climate that eventually led to the birth of life itself to the steady bombardment of asteroids, some of which led to large-scale extinction events. PaleoEarth brings together a number of disparate data sets and provides a unique window into Earth's dynamic history. Key features include: * Shows the motion of continental plates, subduction zones (where oceanic crust sinks into the Earth's mantle) and mid-ocean ridges (where new oceanic crust is created) over the last 50 million years. * Shows sites of major asteroid impacts, tracing them from their original location at the time of impact to their current location, having been transported by the motion of tectonic plates. * Shows how Earth's temperature and atmospheric co2 concentration compare to present-day values, over the last 50 million years. * Traces the borders of a given country back in time, over the last 50 million years. The paid version, PaleoEarth, goes back to 400 million years.
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 ads: PaleoEarth Lite at none against Stars Units Sizes Objects's shown. PaleoEarth Lite also leads on update cadence (every 10 days vs every 4 months) and monetization model (free vs ad-supported). On price, rating, review sentiment and ratings volume 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.
On the App Store both sit at effectively the same score — 4.3 for PaleoEarth Lite against 4.3 for Stars Units Sizes Objects. Both are backed by a comparable volume of ratings — 14 and 6 respectively. Written reviews are what separate them: 83% of PaleoEarth Lite's written reviews are positive against 80% of Stars Units Sizes Objects's.
PaleoEarth Lite ships an update every 10 days, Stars Units Sizes Objects every 4 months. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.
| Parameter | PaleoEarth Lite | Stars Units Sizes Objects |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (14 ratings) | 4.3 (6 ratings) — better |
| Positive reviews | 83.3% of reviews — better | 80.0% of reviews |
| Number of ratings | 14 — better | 6 |
| Update frequency | Every 10 days — better | Every 4 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 11.0 |
| Further details — not scored | ||
| Size | 51 MB | 124 MB |
| Age rating | 4+ | 4+ |
| Developer | Raquibul Hassan | Mudarmeen Munlin |
Customer experience
PaleoEarth Lite
Stars Units Sizes Objects
In-app purchases
PaleoEarth Lite
No in-app purchases
Stars Units Sizes Objects
No in-app purchases
Questions
Is PaleoEarth Lite free?
Is Stars Units Sizes Objects free?
Which has better reviews, PaleoEarth Lite or Stars Units Sizes Objects?
Do PaleoEarth Lite or Stars Units Sizes Objects have ads?
Which is updated more often, PaleoEarth Lite or Stars Units Sizes Objects?
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