SUDiver vs Stars Units Sizes Objects
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SUDiver
This educational app brings Stanford University's digital interactive video exploration tools to mobile devices. It allows users to create and share time-space referenced video clips, enabling detailed analysis of any video content.
- Guided-noticing spatial and temporal video referencing
- Touch interface for moving and resizing reference rectangles
- Networked sharing of point-of-view video clips
- Analysis of personal videos and YouTube content
- Social sharing of video clips to platforms like Twitter and Facebook
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The Diver app brings the original Stanford University Digital Interactive Video Exploration and Reflection (DIVER) project* to Apple's iPad and iPhone. Features of the new app include: • A touch interface implementation of Diver's "guided-noticing" spatial and temporal point-of-view video referencing; users can move & resize the Diver guided-noticing rectangle via iOS's familiar touch interface. • An updated implementation of Diver's networked/Internet sharing of point-of-view video clips– allowing for a) dives** directly on your own or anyone else's videos, and b) easy social sharing of dive clips. For more info about the app read the latest notes/documentation: https://app.diver.video/howto/diver_howto_442_01.php Please also see our EULA (end-user-licensing-agreement): https://app.diver.video/eula * For more info about the original Stanford University Diver project visit: https://diver.stanford.edu ** "Dives" are time/space referenced video clips made by (temporally) selecting sub-portions of a video and (spatially) highlighting areas of the video's frame.
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: Stars Units Sizes Objects at 4.2 against SUDiver's 3.0. Stars Units Sizes Objects also leads on iOS requirement (11.0 vs 15.6). SUDiver's advantage is ads (none vs shown) and update cadence (monthly vs every 4 months). On price, ratings volume, in-app purchases and device support 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.
Stars Units Sizes Objects holds the better App Store score, 4.2 against 3.0. Both are backed by a comparable volume of ratings — 2 and 5 respectively.
SUDiver ships an update monthly, Stars Units Sizes Objects every 4 months. The most recent releases landed on October 1, 2026 and September 22, 2026 respectively.
| Parameter | SUDiver | Stars Units Sizes Objects |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) | 4.2 (5 ratings) — better |
| Positive reviews | — | 80.0% of reviews |
| Number of ratings | 2 | 5 — better |
| Update frequency | Monthly — 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 | 15.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 124 MB |
| Age rating | 4+ | 4+ |
| Developer | Diver Video LLC | Mudarmeen Munlin |
Customer experience
SUDiver
Stars Units Sizes Objects
In-app purchases
SUDiver
No in-app purchases
Stars Units Sizes Objects
No in-app purchases
Questions
Is SUDiver free?
Is Stars Units Sizes Objects free?
Which has better reviews, SUDiver or Stars Units Sizes Objects?
Do SUDiver or Stars Units Sizes Objects have ads?
Which is updated more often, SUDiver or Stars Units Sizes Objects?
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