Comparison

QYScience vs StellarVana

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

QYScience

This educational app offers a fun and interactive way to learn science concepts through custom control and graphical programming. Explore lighting and motor systems with engaging gameplay.

Highlights
  • Custom control of lighting systems
  • Custom control of motor systems
  • Graphical programming gameplay
  • Interactive science learning
  • Engaging educational experience
Features
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Group science and education. Including lighting master control, motor master control of the full custom control and graphics programming gameplay, so that you experience different fun!

About

StellarVana

Explore the night sky with a dynamic celestial map. Identify stars, planets, and constellations in real-time. Plan observations and learn about astronomical events like eclipses.

Highlights
  • Live sky map identification
  • Constellation and object search
  • Eclipse countdowns and visibility
  • Tonight's observation planner
  • Educational astronomy topics
  • Night-vision red mode
Features
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Open to a living sky. Identify what's overhead. StellarVana is an educational star map and celestial reference: the sky above your horizon, IAU constellations, Sun, Moon, and planets, plus eclipse countdowns with honest visibility. Sit with the map. Pan, pinch, and scrub time. The first screen is the sky itself. Hold-up uses the compass and gyroscope so the drawn map follows how you point your phone — there is no camera viewfinder. Search finds objects. Instruments sit on the map: Tonight, Eclipse, Learn, and Settings. WHAT MAKES IT DIFFERENT • Tonight Observe ranks targets for your horizon — twilight, best-now, and Moon-wash (what the Moon will drown tonight) • Eclipse honesty: local “visible here” versus a global candidate. A miss is not upgraded into a backyard forecast • Confirmed exoplanet-host stars on the map. The included sky keeps the brightest hosts. A subscription Search also finds famous systems, including TRAPPIST-1 (about 2,000 hosts). • Instruments on the map, not a tabbed planetarium. Graphics-first Learn — diagrams and Help, not a chat • Sky math on your iPhone (VSOP87, Meeus, SGP4). ISS TLE age is shown. No account. SKY MAP • Live stereographic sky for your location, or a manual latitude and longitude • Naked-eye catalog (magnitude 5) with all 88 IAU constellation names • Constellation stick figures on Free (Orion, Ursa Major, Crux, twelve ecliptic); sky colors that follow the time of day • Hold-up identify and night-vision red mode (night vision hides the normal dome tints) • Naked-eye Messier highlights: Andromeda (M31), Orion Nebula (M42), Pleiades (M45) • Deeper sky when you subscribe: about 42,000 stars to magnitude 8, about 120,000 to magnitude 9, zoom level-of-detail, Messier 110, illustrated art on the twelve ecliptic constellations, full constellation stick-figure pack, optional IAU boundary lines, and the confirmed exoplanet-host layer (about 2,000) SATELLITES • Included: the ISS next pass for your horizon. No clock and no path on the map. • With a subscription: the ISS path and timetable, Hubble, Tiangong (the Chinese space station), and a Starlink-train card when a train passes tonight. Not every satellite in orbit. TONIGHT OBSERVE • Meteor-shower peaks and bright conjunctions as factual event cards • Observation planning for your horizon: twilight bands, ranked targets, best-now, and Moon-wash — what the Moon will drown tonight ECLIPSES • Next solar and lunar geocentric candidates, countdown, diagrams, show on map • Local circumstance when you subscribe: visible here, magnitude, path-vs-you, and a NASA GSFC / Espenak Earth path ribbon on a dedicated Earth card. A miss is not upgraded into “you will see it.” LEARN • Graphics-first topics from the live sky — diagrams and short Help popups, not encyclopedia essays • Positions use VSOP87 (Sun and planets) and Meeus (Moon). ISS uses SGP4 from a TLE; age is shown. PRIVATE BY DESIGN Sky math runs on your iPhone. Location is used to draw your horizon (or set coordinates manually). EDUCATION ONLY StellarVana is astronomy education and observation planning. It is not a photographer’s shot planner, and not medical or professional advice. Privacy Policy: https://stellarvana.com/privacy Terms of Use: https://stellarvana.com/terms Support: support@stellarvana.com

Screenshots

QYScience1 screens
StellarVana4 screens

Verdict

The call

The clearest difference is rating: StellarVana at 5.0 against QYScience's 4.5. QYScience's advantage is in-app purchases (none vs 2) and iOS requirement (13.0 vs 26.0). On price, ratings volume, update cadence and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. StellarVana sells 2 in-app purchases, starting at $4.99 per month. QYScience asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

StellarVana holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 4 respectively.

UpkeepUpdate frequency

QYScience ships an update every 11 days, StellarVana every 3 weeks. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.

Scorecard4 real differences · 6 level
QYScience versus StellarVana: the parameters behind the verdict, then further details
ParameterQYScienceStellarVana
PriceFreeFree
Rating4.5 (2 ratings)5.0 (4 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings24 — better
Update frequencyEvery 11 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better26.0
Further details — not scored
Size292 MB13 MB
Age rating4+4+
Developer广东群宇互动科技有限公司Gary Saggu

Customer experience

QYScience

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

StellarVana

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

QYScience

No in-app purchases

2 purchases

StellarVana

Subscriptions2
  • StellarVana Premium monthly$4.991 Month
  • StellarVana Premium Annual7 Days trial$39.991 Year

Questions

Is QYScience free?
QYScience is free to download, with no in-app purchases.
Is StellarVana free?
StellarVana is free to download, with in-app purchases available.
Which has better reviews, QYScience or StellarVana?
StellarVana is rated higher. QYScience averages 4.5 out of 5 from 2 ratings, while StellarVana averages 5.0 from 4 ratings.
Do QYScience or StellarVana have ads?
Neither QYScience nor StellarVana shows ads.
Which is updated more often, QYScience or StellarVana?
QYScience ships an update every 11 days, and StellarVana every 3 weeks. Most recently, QYScience was updated on October 2, 2026 and StellarVana on October 10, 2026.

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