# Build a Bridge! vs Spaceflight Simulator

The clearest difference is ads: Spaceflight Simulator at none against Build a Bridge!'s shown. Spaceflight Simulator also leads on update cadence (every 9 days vs every 2 months) and review sentiment (86% vs 59%). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Build a Bridge! sells 10 one-off in-app purchases and Spaceflight Simulator sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Spaceflight Simulator holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 26K and 97K respectively. Written reviews point the same way: 59% of Build a Bridge!'s written reviews are positive against 86% of Spaceflight Simulator's.

Build a Bridge! ships an update every 2 months, Spaceflight Simulator every 9 days. Both last shipped on September 24, 2026.

## The numbers

| Metric | Build a Bridge! | Spaceflight Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (26K ratings)](https://appshunter.io/ios/app/build-a-bridge/id1165289168/reviews) | **[4.8 (97K ratings)](https://appshunter.io/ios/app/spaceflight-simulator/id1308057272/reviews)** |
| Number of ratings | 26K | **97K** |
| Positive reviews | 59.0% of reviews | **85.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 325 MB | 172 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 12+ | 4+ |
| Developer | [BoomBit, Inc.](https://appshunter.io/developer/1045926022) | [Spaceflight Simulator UK Ltd](https://appshunter.io/developer/1308057271) |

## What reviewers say

### Build a Bridge!

[App page](https://appshunter.io/ios/app/build-a-bridge/id1165289168)

A physics-based puzzle game where you design and build bridges using various materials. Test your creations in 3D to see if they hold up under pressure, with multiple levels and environments to explore.

**Highlights:** Physics-based bridge construction, Choose from wood, metal, and cables, 86 challenging levels, Realistic physics engine, 3D testing mode, Easy mode for creativity

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Easy Mode | $0.99 | one-time |
| Small Coins Pack | $1.99 | one-time |
| Space World | $1.99 | one-time |
| Easy Mode | $2.99 | one-time |
| Remove Ads | $2.99 | one-time |
| Welcome Offer Unlock All | $4.99 | one-time |
| Welcome Offer - Starter Pack | $4.99 | one-time |
| Orient World | $5.99 | one-time |
| Welcome Offer - Constructor | $9.99 | one-time |
| Unlock All | $9.99 | one-time |

**What reviewers like**

- 🚀 Addictive gameplay
- 👍 Realistic physics
- 🚀 No WiFi required
- 🚀 Good graphics
- 👍 Teaches engineering concepts

**What reviewers complain about**

- 🐛 Frequent crashes
- 💰 Excessive ads and in-app purchases
- 🤯 Extremely difficult levels
- 🤔 Unrealistic bridge scenarios
- 🤯 Confusing mechanics

**Reported bugs**

- Progress not saving properly
- Game freezing and crashing
- Ads causing the game to malfunction

**Requested features**

- More levels and content updates
- Controller support
- Easier difficulty mode
- Less intrusive ads
- Ability to build bridges freely without restrictions


### Spaceflight Simulator

[App page](https://appshunter.io/ios/app/spaceflight-simulator/id1308057272)

Build and launch rockets to explore a realistic, open universe. Experience space exploration with accurate physics and a vast, explorable solar system.

**Highlights:** Build custom rockets, Realistic orbital mechanics, Explore a scaled universe, Visit planets and moons, Open-world space exploration, Real-life physics simulation

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Skins Expansion | $2.99 | one-time |
| Full Version | $3.99 | one-time |
| Redstone + Atlas Pack | $3.99 | one-time |
| Parts Expansion | $4.99 | one-time |
| Infinite Area Expansion | $4.99 | one-time |
| Expansion Bundle | $7.99 | one-time |
| Cheats Expansion | $9.99 | one-time |
| Full Bundle Upgrade | $9.99 | one-time |
| Full Bundle | $11.99 | one-time |
| Full Bundle | $14.99 | one-time |

**What reviewers like**

- 🚀 Realistic physics and space simulation
- 👍 Intuitive controls and easy to learn
- 🚀 Ability to build complex rockets and spacecraft
- 👍 No ads or in-app purchases required to play

**What reviewers complain about**

- 🐛 Occasional bugs and glitches, especially with large rockets
- 🔋 Potential performance issues on older devices
- 🔒 Limited customization and part options in free version
- 🚀 Docking and rendezvous maneuvers can be very challenging

**Reported bugs**

- Rocket parts sometimes clipping through each other
- Occasional freezing or crashing when launching large rockets
- Issues with RCS thrusters firing unexpectedly during docking
- Problems with maintaining stable orbits and transfers

**Requested features**

- Add more planets, moons, and celestial bodies to explore
- Implement a career mode or progression system with challenges
- Allow for more customization of rocket parts and spacecraft
- Improve docking and rendezvous mechanics to make them more accessible
- Add the ability to control individual astronauts and perform EVAs


## Frequently asked questions

### Is Build a Bridge! free?

Build a Bridge! is free to download, with in-app purchases available.

### Is Spaceflight Simulator free?

Spaceflight Simulator is free to download, with in-app purchases available.

### Which has better reviews, Build a Bridge! or Spaceflight Simulator?

Spaceflight Simulator is rated higher. Build a Bridge! averages 4.6 out of 5 from 26K ratings, while Spaceflight Simulator averages 4.8 from 97K ratings.

### Do Build a Bridge! or Spaceflight Simulator have ads?

Build a Bridge! shows ads; Spaceflight Simulator does not.

### Which is updated more often, Build a Bridge! or Spaceflight Simulator?

Build a Bridge! ships an update every 2 months, and Spaceflight Simulator every 9 days. Most recently, Build a Bridge! was updated on September 24, 2026 and Spaceflight Simulator on September 24, 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.*