# Planet Builder - Create Your Own Solar System

> Create and simulate your own solar systems with customizable celestial bodies and dynamic events. (iPhone/iPad app by David Nelson.)

- Source: https://appshunter.io/ios/app/planet-builder-create-your-own-solar-system/id1046390770 (this page in markdown: same URL + `.md`)
- Developer: [David Nelson](https://appshunter.io/developer/1046390769)
- Category: Games, Simulation
- Price: $0.99
- Rating: 4.40/5 from 72 App Store ratings · 36 written reviews indexed
- Age rating: 4+
- Requires: iOS 6.0 · 95 MB
- Languages: American English
- Released: 2015-11-11
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/planet-builder-create-your-own-solar-system/id1046390770/reviews.md

## What is Planet Builder?

With Planet Builder, you are the architect of your own solar system. Build planets and moons, and choose their attributes such as name, size, orbit speed, spin speed, tilt, rings, orbit distance, and appearance. Watch them orbit in real-time 3D, creating trails behind them as they circle the sun.

Want to make things interesting? Press the asteroid attack button and watch as asteroids knock your planets out of orbit! Or, shoot asteroids at them yourself with the Asteroid Cannon.

Make your sun go Supernova and turn into a black hole, and suck all your planets in.

Increase or decrease the sun gravity, or activate Planetary Gravity, which gives each planet it's own gravitational field.

Or, start in Quick Start mode and enter our Solar System, with all 8 planets (and Pluto!) and their major moons, and the asteroid belt. High resolution textures and recent pictures of Pluto from the New Horizons space probe add an extra layer of realism.

## Key features

- Build planets and moons
- Customize celestial attributes
- Real-time 3D orbits
- Asteroid attack simulation
- Sun transformation (Supernova, Black Hole)
- Adjustable gravity settings
- Quick Start Solar System mode

## Recent user reviews (10 of 36)

All indexed reviews: https://appshunter.io/ios/app/planet-builder-create-your-own-solar-system/id1046390770/reviews.md

### 4/5 — Great game… but

*2025-05-16*

The only issue I have with this game is the fact that there is no save button. Until that gets added I don’t see the point of playing sadly.

### 3/5 — Help

*2024-03-15*

Can someone comment on how you save the solar system that you created so that if you close the app you can get to it again?

### 1/5 — REFUND

*2024-03-04, version 1.01*

Delete and get your refund immediately!

### 4/5 — pls add more things

*2024-01-01*

you need to add orbit tilts and so you can save your solar system and make it so you make the planets farther from the sun and I want to rename the sun you need more textures and you need to update the limit of moons so I can replicate the solar system properly and I NEED asteroid moons and a save button and I want to customize the rings for the planets and I want it so you can make the planets smaller than 10

### 3/5 — Good but

*2022-01-22*

I really want to add a save file so I can continue making planets and editing them instead of starting over every time

### 4/5 — Good game but some suggestions

*2021-12-19*

I like this game but when you turn on the planet’s gravity, then fire a asteroid toward it, then the asteroid just avoid it from colliding.

### 4/5 — .

*2021-10-15, version 1.01*

Can you make more options please?

### 5/5 — Best game ever

*2021-08-01*

My mum got me this game and it was so cool but after a year ago my mum decided to delete it

### 5/5 — Amazing!!!!

*2021-06-15*

So I got this game yesterday and as soon as I created the first planet I loved it. Might not be interesting, but these are me planets names. Mersery, Wennit, Catilda. I love that you can have different speed levels and that you can customize your planets and you don’t have to stick with just the Mercury and Venus textures. Love it!

### 5/5 — Best app ever

*2021-05-21*

When I downloaded it best day eeeverrr I love black holes and when the star explodes it becomes one and it’s just soooo fun

## Frequently asked questions about Planet Builder

### What can I do in Planet Builder?

In Planet Builder, you can act as an architect for your own solar system. You can construct planets and moons, defining their names, sizes, orbital speeds, spin speeds, tilts, rings, orbital distances, and visual appearances. The app allows you to observe these celestial bodies orbiting in real-time 3D, complete with trails.

### Are there any interactive events or challenges?

Yes, the app includes interactive elements to make your solar system more dynamic. You can trigger an asteroid attack to see planets knocked out of orbit, or use the Asteroid Cannon to shoot asteroids yourself. You can also transform the sun into a supernova that becomes a black hole, which then pulls in all nearby planets.

### Does the app offer any pre-made solar systems?

Yes, Planet Builder includes a Quick Start mode. This mode allows you to enter a pre-configured Solar System that includes all eight planets (plus Pluto) and their major moons, as well as the asteroid belt. This mode features high-resolution textures and realistic imagery, such as recent pictures of Pluto from the New Horizons probe.

### Can I adjust the gravity in the solar system?

The app provides options to control gravity. You can increase or decrease the sun's gravity. Additionally, you can activate Planetary Gravity, which grants each individual planet its own gravitational field, adding another layer of realism and complexity to your simulated solar system.

## Version history (last 1 release)

### 1.01 — 2015-11-11

This app has been updated by Apple to display the Apple Watch app icon.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*