Scale - Size Comparison

Contains ads
4.2
352 reviews
Content rating
Everyone
10K+
Downloads
Content rating
Everyone
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About this app

Discover the true scale of the universe!

Have you ever wondered how big a galaxy is compared to a single cell? Or how small a proton really is? Experience a fluid and comprehensive journey through the dimensions of our world.

From the smallest subatomic particles to the vast observable universe, explore dozens of objects in a stunning, modern interface.

Key Features:
- Seamless Unlimited Zoom: Glide through orders of magnitude without boundaries.
- Explore the Microcosmos: Dive deep into atoms, DNA, and cells.
- Journey to the Macrocosmos: Discover planets, stars, nebulas, and entire galaxies.
- Interactive Comparison View: Visualize and compare the sizes of different objects side-by-side.
- Multiple Units: Support for Light Years, SI units, and Imperial units for a truly global experience.
- Dark Mode: A beautiful, eye-friendly design for late-night exploration.
- Educational & Fun: Perfect for students, teachers, and science enthusiasts of all ages.

Start your journey today and see where you fit into the grand design of the cosmos!

I am constantly working on adding new objects and features. If you enjoy the app, please consider leaving a review!
Updated on
Apr 30, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Ratings and reviews

4.2
264 reviews
Nathan Lawson
May 5, 2026
I have thoroughly enjoyed the latest update, and most of my concerns in my previous reviews were addressed. However, there are a few minor changes that would make for another improvement. 1. Being able to set custom colors for objects. 2. Being able to set an object's shape as a square. 3. Being able to set length and height independent of each other, creating a sort of squashed or stretched shape. Overall, I greatly enjoy the app, and these few fixes would make for the best possible experience.
15 people found this review helpful
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Drop.apps
March 24, 2026
Thank you for your detailed feedback. I've just updated the app with a lot of improvements. There are now more units, including light years. You can activate a high-contrast mode if you have trouble distinguishing objects with similar colors or and a side-by-side comparison mode. More shapes are also planned for addition soon.
A Google user
December 13, 2019
App was great, did exactly what I needed it to do. Also, I saw you reply to someone who gave you 1 star because the app wouldn't work. They claimed they had "a very nice phone" and you responded saying you can see what phone they were using and it wasn't nice at all. I thought that was pretty hilarious.. One thing, it'd be pretty cool if we could make rectangles, would make it a bit easier to use the app.
32 people found this review helpful
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Drop.apps
December 17, 2019
Thank you for your feedback! I thought about rectangles aswell. Maybe I'll add them in the future.
misti witherell
May 2, 2026
This is so best app for sizes! But, you need to add the design of the things, for example, Heart, Lungs, Eyes, and others. If yes, then I'm so happy!
2 people found this review helpful
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Drop.apps
May 3, 2026
Thank you! I'll add some of these objects soon :)

What’s new

🚀 What's New in this Update?
2.3:
- Added new objects: Asteroids, Nebulae, Fish, Rockets, and some very small things
- New colors
- Stability improvements and general optimizations