Comparison

ViGravitatis vs Heliosphere

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

Head to head
About

ViGravitatis

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The physics is fun! The law of gravity in particular. Explore it with ViGravitatis today and understand the trajectory of celestials tomorrow! Guide: Modes ViGravitatis provides two key modes: Creation and Simulation. In the Creation Mode, you have the full power to place anything in your space and anywhere. When you press Play, Simulation mode starts automatically. In this mode, you are limited to changing a few parameters of a selected celestial. Moreover, different capabilities are available when simulation is playing compared to when it is paused. Use the toggle with the hammer icon to switch between Creation and Simulation. Note that when you switch from Simulation to Creation, the space is reset to its initial state. Meaning that the positions and velocities of celestials are reset. The key scenario of using the app is to set up your scene in the Creation Mode and then check how it is changing during the simulation. Then, go back to Creation Mode, change a few initial parameters, and check again how it affects the simulation. Guide: Simulation Speed There are a few ways you can affect the speed of the simulation. First of all, it can be completely paused at any time. So, no objects are moving. But you can also change the accuracy of the simulation using the slider near the Play/Pause toggle. It can increase the speed of the simulation, sacrificing accuracy. So, at very high speeds, objects can start moving in a very surprising way, albeit inaccurately. On the other hand, you can change the “iterations count”. With greater iterations in total simulation runs, faster without any degradation in accuracy, but it will require more battery power of your device.

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
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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

ViGravitatis3 screens
Heliosphere4 screens

Verdict

The call

The clearest difference is in-app purchases: ViGravitatis at none against Heliosphere's 3. ViGravitatis also leads on iOS requirement (14.2 vs 18.0). Heliosphere's advantage is update cadence (every 3 days vs every 47 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. ViGravitatis asks for nothing beyond the download.

UpkeepUpdate frequency

ViGravitatis ships an update every 47 months, Heliosphere every 3 days. The most recent releases landed on October 11, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 7 level
ViGravitatis versus Heliosphere: the parameters behind the verdict, then further details
ParameterViGravitatisHeliosphere
PriceFreeFree
Rating—3.0 (2 ratings) — better
Positive reviews—50.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 47 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, Vision Pro
Requires iOS14.2 — better18.0
Further details — not scored
Size34 MB36 MB
Age rating4+4+
DeveloperArtyom RudakovCHUNGKIL KIM

In-app purchases

None

ViGravitatis

No in-app purchases

3 purchases

Heliosphere

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

Questions

Is ViGravitatis free?
ViGravitatis is free to download, with no in-app purchases.
Is Heliosphere free?
Heliosphere is free to download, with in-app purchases available.
Do ViGravitatis or Heliosphere have ads?
Neither ViGravitatis nor Heliosphere shows ads.
Which is updated more often, ViGravitatis or Heliosphere?
ViGravitatis ships an update every 47 months, and Heliosphere every 3 days. Most recently, ViGravitatis was updated on October 11, 2026 and Heliosphere on October 14, 2026.

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