# Solar System Simulation vs Colourful Semantics Fill Gaps

The clearest difference is price: Solar System Simulation at $5.99 against Colourful Semantics Fill Gaps's $8.99. Solar System Simulation also leads on device support (4 vs 1). On update cadence, ads, in-app purchases and iOS requirement there is nothing between them.

Solar System Simulation costs $5.99 and Colourful Semantics Fill Gaps $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Solar System Simulation ships an update every 5 months, Colourful Semantics Fill Gaps every 3 months. The most recent releases landed on October 10, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Solar System Simulation | Colourful Semantics Fill Gaps |
| --- | --- | --- |
| Price | **$5.99** | $8.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/solar-system-simulation-s3/id6475205482/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | Paid | — |
| Size | 14 MB | 260 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Taliyo Ltd](https://appshunter.io/developer/1582104523) | [Prentke Romich Company](https://appshunter.io/developer/474446992) |

## What reviewers say

### Solar System Simulation

[App page](https://appshunter.io/ios/app/solar-system-simulation-s3/id6475205482)

Explore the cosmos with interactive 3D models of planets and moons. Witness the dynamic interplay of gravitational forces through orbit simulations and gain educational insights into celestial bodies. Discover the beauty of our solar neighborhood in a new dimension.

**Highlights:** Interactive 3D planet models, Orbit simulation, Educational insights, Zoom and rotate functionality, Detailed planet information

**Features:** Vision Pro support

**In-app purchases:** none


### Colourful Semantics Fill Gaps

[App page](https://appshunter.io/ios/app/colourful-semantics-fill-gaps/id6648792952)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Solar System Simulation free?

Solar System Simulation costs $5.99, with no in-app purchases.

### Is Colourful Semantics Fill Gaps free?

Colourful Semantics Fill Gaps costs $8.99, with no in-app purchases.

### Do Solar System Simulation or Colourful Semantics Fill Gaps have ads?

Neither Solar System Simulation nor Colourful Semantics Fill Gaps shows ads.

### Which is updated more often, Solar System Simulation or Colourful Semantics Fill Gaps?

Solar System Simulation ships an update every 5 months, and Colourful Semantics Fill Gaps every 3 months. Most recently, Solar System Simulation was updated on October 10, 2026 and Colourful Semantics Fill Gaps on October 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*