# Solar Walk vs Bio Lab

The clearest difference is in-app purchases: Bio Lab at none against Solar Walk's 11. Bio Lab also leads on rating (5.0 vs 4.7) and price ($2.99 vs $4.99). Solar Walk's advantage is update cadence (every 5 months vs every 49 months) and ratings volume (8.2K vs 1). On ads and device support there is nothing between them.

Solar Walk costs $4.99 and Bio Lab $2.99 up front. Solar Walk sells 11 one-off in-app purchases. Bio Lab asks for nothing beyond the download.

Bio Lab holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Solar Walk has 8.2K ratings behind it against 1, so its average is the more settled of the two.

Solar Walk ships an update every 5 months, Bio Lab every 49 months. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Solar Walk | Bio Lab |
| --- | --- | --- |
| Price | $4.99 | **$2.99** |
| Rating | [4.7 (8.2K ratings)](https://appshunter.io/ios/app/solar-walk-space-simulator-3d/id347546771/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/bio-lab/id1475353026/reviews)** |
| Number of ratings | **8.2K** | 1 |
| Positive reviews | 72.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 49 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 451 MB | 155 MB |
| Requires iOS | 15.0 | **11.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Vito Technology Inc.](https://appshunter.io/developer/289641503) | [Vijayvir Singh](https://appshunter.io/developer/1469680736) |

## What reviewers say

### Solar Walk

[App page](https://appshunter.io/ios/app/solar-walk-space-simulator-3d/id347546771)

Explore a detailed 3D model of our solar system and the universe. Interact with planets, moons, and satellites, and take virtual flights through space. Travel through time to see the universe's past and learn with educational movies.

**Highlights:** Interactive 3D solar system model, Virtual flights between celestial bodies, Time travel feature for historical views, Educational movies about space, Orrery and true-to-scale view modes, Milky Way Galaxy view

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mission of Cassini-Huygens | Free | one-time |
| Cycles of the Earth System | Free | one-time |
| Major Circles of Latitude | Free | one-time |
| Movies Bundle | Free | one-time |
| 3D Satellites in Real Time | Free | one-time |
| Planets of the Solar System | Free | one-time |
| What is a Solar Eclipse? | Free | one-time |
| The Moon Phases Explanation | Free | one-time |
| Zodiacal Constellations | Free | one-time |
| High Resolution Bundle | $1.99 | one-time |
| All Additional Content - Sale | $2.99 | one-time |

**What reviewers like**

- 🌟 Excellent graphics and visuals
- 🔍 Detailed information about the solar system
- 🌍 Ability to explore the planets and moons
- 🎥 Informative videos and animations
- 🧠 Educational and informative for all ages

**What reviewers complain about**

- 💰 Expensive in-app purchases required to unlock full features
- 🐛 Bugs and crashes reported, especially after updates
- 🕹️ Navigation and controls can be unintuitive
- 🌌 Limited to just the solar system, no other galaxies or deep space

**Reported bugs**

- App crashes on launch for some users
- In-app purchases not working correctly
- Freezing and performance issues on older devices
- Incorrect planet/moon positioning and timing

**Requested features**

- Add more planets, moons, and objects to the solar system
- Expand to include other star systems and galaxies
- Improve navigation and controls for easier exploration
- Offer more free content instead of paid add-ons
- Fix reported bugs and crashes


### Bio Lab

[App page](https://appshunter.io/ios/app/bio-lab/id1475353026)

Explore human anatomy and test your knowledge with interactive quizzes and animated GIFs of body functions. This educational app provides a visual and engaging way to learn biology.

**Highlights:** Human anatomy diagrams, Biology quizzes, Body part function GIFs, Educational content, Interactive learning

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Solar Walk free?

Solar Walk costs $4.99, and also offers in-app purchases.

### Is Bio Lab free?

Bio Lab costs $2.99, with no in-app purchases.

### Which has better reviews, Solar Walk or Bio Lab?

Bio Lab is rated higher. Solar Walk averages 4.7 out of 5 from 8.2K ratings, while Bio Lab averages 5.0 from 1 ratings.

### Do Solar Walk or Bio Lab have ads?

Neither Solar Walk nor Bio Lab shows ads.

### Which is updated more often, Solar Walk or Bio Lab?

Solar Walk ships an update every 5 months, and Bio Lab every 49 months. Most recently, Solar Walk was updated on October 24, 2026 and Bio Lab on October 6, 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.*