Comparison

Astris vs Heliosphere

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

Head to head
About

Astris

Features
Read full description

This app allows to you discover our solar system with every planet, moons and asteroids and add it to your favorites.  You will be able to have a 3d experience with the planets and the sun. Every text is accessible thanks to the speak screen.

About

Heliosphere

Explore a real-time 3D simulation of the solar system, planets, moons, and spacecraft using accurate astronomical data. Learn about celestial bodies and space missions with educational content and quizzes.

Highlights
  • Real-time 3D solar system simulation
  • Live spacecraft tracking
  • Deep sky exploration
  • Comprehensive astronomy education
  • Time travel from 1900 to 2100
  • Planet-centric viewing mode
Features
Read full description

Explore the solar system at your fingertips. Heliosphere is a real-time 3D solar system simulation powered by NASA JPL Horizons data. It accurately recreates the orbits of planets, moons, comets, and dwarf planets while tracking the real positions of active spacecraft. * Real-time 3D Solar System Simulation — 8 planets, 5 dwarf planets, 10+ moons, and 4 comets — Precise Keplerian orbit calculations based on real astronomical data — Time travel from 1900 to 2100 — Pan, zoom, and rotate for a free-roaming perspective — Switch to planet-centric viewing mode * Live Spacecraft Tracking — Voyager 1, 2 | Pioneer 10, 11 — Cassini | Juno | New Horizons | Parker Solar Probe — Real position data from NASA JPL Horizons API * Deep Sky Exploration — Over 150 bright stars — 530 Milky Way stars — 124 deep-sky objects (Messier, NGC/IC catalogs) * Comprehensive Astronomy Education — 6 difficulty levels from middle school to graduate — Core concepts: Kepler's Laws, gravity, escape velocity, and more — Mission timelines for Voyager, Cassini, New Horizons, and others — 60+ quiz questions to test your knowledge — Historical space event date-guessing challenges * Free for Everyone — All content available at no cost — No ads — 11 languages supported Experience the beauty of the cosmos and the wonder of science through scientifically accurate data and intuitive interaction.

Screenshots

Astris4 screens
Heliosphere4 screens

Verdict

The call

The clearest difference is in-app purchases: Astris at none against Heliosphere's 3. Astris also leads on iOS requirement (15.0 vs 18.0). Heliosphere's advantage is update cadence (every 3 days vs every 3 months). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Heliosphere sells 3 one-off in-app purchases. Astris asks for nothing beyond the download.

UpkeepUpdate frequency

Astris ships an update every 3 months, Heliosphere every 3 days. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
Astris versus Heliosphere: the parameters behind the verdict, then further details
ParameterAstrisHeliosphere
PriceFreeFree
Rating—3.0 (2 ratings) — better
Positive reviews—50.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 3 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free
DevicesiPhone, iPodiPhone, iPad, Vision Pro — better
Requires iOS15.0 — better18.0
Further details — not scored
Size21 MB37 MB
Age rating4+4+
DeveloperISTITUTI EDMONDO DE AMICIS SRLCHUNGKIL KIM

In-app purchases

None

Astris

No in-app purchases

3 purchases

Heliosphere

One-time3
  • 1 Coffee$2.99
  • 3 Coffees$8.99
  • 5 Coffees$14.99

Questions

Is Astris free?
Astris is free to download, with no in-app purchases.
Is Heliosphere free?
Heliosphere is free to download, with in-app purchases available.
Do Astris or Heliosphere have ads?
Neither Astris nor Heliosphere shows ads.
Which is updated more often, Astris or Heliosphere?
Astris ships an update every 3 months, and Heliosphere every 3 days. Most recently, Astris was updated on October 27, 2026 and Heliosphere on October 24, 2026.

Other comparisons