# 3D Solar System vs Alert Sounds Pro

The clearest difference is in-app purchases: Alert Sounds Pro at none against 3D Solar System's 10. Alert Sounds Pro also leads on ads (none vs shown) and iOS requirement (10.0 vs 16.0). 3D Solar System's advantage is update cadence (fortnightly vs every 2 months). On price and device support there is nothing between them.

Both are free to download. 3D Solar System sells 10 in-app purchases, starting at $9.99 per month. Alert Sounds Pro asks for nothing beyond the download.

3D Solar System ships an update fortnightly, Alert Sounds Pro every 2 months. The most recent releases landed on November 6, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 3D Solar System | Alert Sounds Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (1.7K ratings)](https://appshunter.io/ios/app/3d-solar-system-planets-view/id983877380/reviews)** | — |
| Number of ratings | **1.7K** | — |
| Positive reviews | 28.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 352 MB | 39 MB |
| Requires iOS | 16.0 | **10.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Education Terra](https://appshunter.io/developer/946819038) | [Nipuna Arachchi](https://appshunter.io/developer/1488603319) |

## What reviewers say

### 3D Solar System

[App page](https://appshunter.io/ios/app/3d-solar-system-planets-view/id983877380)

Explore our solar system in 3D and augmented reality. Learn about planets, moons, constellations, and stars with interactive maps and engaging quizzes. Create your own planets with AI.

**Highlights:** 3D and AR Solar System exploration, Interactive star map with gyroscope support, Detailed information on planets, moons, and constellations, Knowledge-testing quizzes and challenges, AI-powered planet creation, Constellation lore and astronomy facts

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month PRO | $9.99 | per month |
| 1 month Sale | $10.99 | per month |
| 12 months sale | $14.99 | per year |
| Astronomy guide - Sky atlas | $19.99 | per month |
| 12 months | $29.99 | per year |
| Astronomy guide - Sky atlas | $29.99 | per 3 months |
| 2 Month Subscription | $39.99 | per 2 months |
| 2 Months Subscription | $39.99 | per 2 months |
| Disable Ads Sale | $9.99 | one-time |
| Disable Ads | $19.99 | one-time |

**What reviewers like**

- 🌟 Informative and educational
- 🔍 Detailed solar system information
- 🎨 Cool visuals and graphics

**What reviewers complain about**

- 💰 Expensive subscription model
- 🔒 Difficult to cancel subscription
- 🤔 Misleading 'free' claims
- 🐛 Bugs and glitches
- 🤯 Confusing user interface

**Reported bugs**

- Planets displayed incorrectly
- Subscription charges without consent
- Inability to cancel subscription

**Requested features**

- More free content and features
- Realistic planet models and animations
- Expanded content beyond the solar system
- Improved accessibility and usability


### Alert Sounds Pro

[App page](https://appshunter.io/ios/app/alert-sounds-pro/id1572309218)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 3D Solar System free?

3D Solar System is free to download, with in-app purchases available.

### Is Alert Sounds Pro free?

Alert Sounds Pro is free to download, with no in-app purchases.

### Do 3D Solar System or Alert Sounds Pro have ads?

3D Solar System shows ads; Alert Sounds Pro does not.

### Which is updated more often, 3D Solar System or Alert Sounds Pro?

3D Solar System ships an update fortnightly, and Alert Sounds Pro every 2 months. Most recently, 3D Solar System was updated on November 6, 2026 and Alert Sounds Pro on October 27, 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.*