Stars Units Sizes Objects vs Tuning Fork Study
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Tuning Fork Study
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Tuning Fork Effects EduTech is an interactive learning app designed to help students understand the effects of a vibrating tuning fork. Through clear explanations, engaging visuals, and activity-based demonstrations, the app makes learning about sound vibrations simple and fun. Students can explore how a tuning fork produces sound, how vibrations propagate through different mediums, and how sound waves interact with the environment. The app features 3D interactive models that can be zoomed, rotated, and explored offline, making physics concepts easier to visualize and understand. Ideal for school-level physics, the app helps learners grasp the fundamentals of sound, vibration, and wave propagation with an interactive and hands-on approach. Features: - Interactive 3D tuning fork models with zoom & rotate - Learn how vibrations produce sound - Understand wave propagation and effects - Clear, student-friendly explanations - Works completely offline - no internet needed - Activity-based visuals for deeper understanding - Perfect for school physics and sound experiments Explore the fascinating world of vibrations and sound with Tuning Fork Effects EduTech, your interactive guide to learning physics effectively.
Screenshots
Verdict
The clearest difference is price: Stars Units Sizes Objects at Free against Tuning Fork Study's $1.99. Stars Units Sizes Objects also leads on update cadence (every 4 months vs every 37 months). Tuning Fork Study's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement 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
Stars Units Sizes Objects is free to download; Tuning Fork Study costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Stars Units Sizes Objects ships an update every 4 months, Tuning Fork Study every 37 months. The most recent releases landed on September 22, 2026 and October 10, 2026 respectively.
| Parameter | Stars Units Sizes Objects | Tuning Fork Study |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.2 (5 ratings) — better | — |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 4 months — better | Every 37 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 124 MB | 224 MB |
| Age rating | 4+ | 4+ |
| Developer | Mudarmeen Munlin | VIRTUAL FILAMENTS PRIVATE LIMITED |
In-app purchases
Stars Units Sizes Objects
No in-app purchases
Tuning Fork Study
No in-app purchases
Questions
Is Stars Units Sizes Objects free?
Is Tuning Fork Study free?
Do Stars Units Sizes Objects or Tuning Fork Study have ads?
Which is updated more often, Stars Units Sizes Objects or Tuning Fork Study?
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