# Algodoo vs Blocks Builder

The clearest difference is price: Blocks Builder at Free against Algodoo's $7.99. Blocks Builder also leads on rating (4.7 vs 3.8) and device support (3 vs 1). Algodoo's advantage is in-app purchases (none vs 1) and ads (none vs shown). On iOS requirement there is nothing between them.

Blocks Builder is free to download; Algodoo costs $7.99 up front. Blocks Builder sells 1 one-off in-app purchase. Algodoo asks for nothing beyond the download.

Blocks Builder holds the better App Store score, 4.7 against 3.8. That said, the two scores are not equally well evidenced: Algodoo has 878 ratings behind it against 64, so its average is the more settled of the two.

Algodoo ships an update monthly, Blocks Builder every 4 months. The most recent releases landed on October 18, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Algodoo | Blocks Builder |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | [3.8 (878 ratings)](https://appshunter.io/ios/app/algodoo/id616064935/reviews) | **[4.7 (64 ratings)](https://appshunter.io/ios/app/blocks-builder-3d-and-ar-app/id1584981810/reviews)** |
| Number of ratings | **878** | 64 |
| Positive reviews | 58.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 29 MB | 99 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 9+ | 4+ |
| Developer | [Algoryx Simulation AB](https://appshunter.io/developer/464050548) | [Wai Chin Ng](https://appshunter.io/developer/804619701) |

## What reviewers say

### Algodoo

[App page](https://appshunter.io/ios/app/algodoo/id616064935)

Design and experiment with realistic 2D physics simulations. Build intricate machines, create virtual science experiments, and explore cause and effect. Share your creations and discover those of others in a vibrant community.

**Highlights:** Create objects with shapes or free-hand drawing, Combine components for intricate machines, Choose and customize materials, Simulate physics with gravity and aerodynamics, Explore ideas through trial and error, Build animations, contraptions, and experiments, Access community-created scenes

**In-app purchases:** none

**What reviewers like**

- 🚀 Great physics simulation
- 👍 Interesting and fun to use
- 💡 Ability to create and share creations
- 🚀 No ads

**What reviewers complain about**

- 🐛 Frequent crashes and bugs
- 🐛 Issues with loading and saving scenes
- 🐛 Textures and images not working properly
- 🐛 Laggy performance with complex scenes

**Reported bugs**

- Scenes resetting to tutorial
- Textures and images not loading properly
- Crashes when trying to import images
- Buttons and controls not working as expected

**Requested features**

- Add text and scripting options on mobile
- Improve mobile UI and controls
- Implement more features from PC version
- Fix issues with account bans and deletions


### Blocks Builder

[App page](https://appshunter.io/ios/app/blocks-builder-3d-and-ar-app/id1584981810)

This puzzle game allows players to build and create pixel-style models using various colored blocks. Import reference diagrams, follow tutorials, and even use augmented reality to bring your creations to life. Share your building process through videos.

**Highlights:** Block crafting with various colors, Import reference diagrams for building, Tutorials for preset models, Edit existing models, Record and share building videos, Augmented Reality model projection

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3D Blocks Bulider - Ads Remove | $3.99 | one-time |


## Frequently asked questions

### Is Algodoo free?

Algodoo costs $7.99, with no in-app purchases.

### Is Blocks Builder free?

Blocks Builder is free to download, with in-app purchases available.

### Which has better reviews, Algodoo or Blocks Builder?

Blocks Builder is rated higher. Algodoo averages 3.8 out of 5 from 878 ratings, while Blocks Builder averages 4.7 from 64 ratings.

### Do Algodoo or Blocks Builder have ads?

Blocks Builder shows ads; Algodoo does not.

### Which is updated more often, Algodoo or Blocks Builder?

Algodoo ships an update monthly, and Blocks Builder every 4 months. Most recently, Algodoo was updated on October 18, 2026 and Blocks Builder on October 5, 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.*