Algodoo vs Chalk Board
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Algodoo
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.
- 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
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Bring your ideas to life with realistic physics in Algodoo. This creative and educational app lets you design two-dimensional scenes where objects move according to the laws of physics. See cause and effect in action and refine your builds to perfection. Algodoo is a virtual 2D construction set to enjoy the creative thrill of building fun scenes and machines. You’ll never run out of parts. You can go deeper and analyse the motion and learn about mechanical devices. Once you master the tools and principles, you can build sandbox games or mesmerising, complex simulations. • Use basic 2D geometrical shapes or the free-hand drawing tool to create objects. • Combine components like axles, springs, motors, ropes, and lasers to create intricate machines. • Choose from various materials—steel, wood, rubber, water, and helium—and customise at will. • Press “Simulate” to bring your scene to life, moving under the forces of gravity, aerodynamics, buoyancy, and more. • Use trial and error to explore ideas and perfect your inventions. • Express your imagination with vibrant colors, shapes, and textures. Looking to build animations, contraptions, marble races, moving structures, chain reactions, or virtual science experiments? With Algodoo, the possibilities for invention, creativity, and exploration are endless. With the Quick Tour and tutorial videos, you can easily learn Algodoo’s basic tools and principles. It's not just for fun— the scientific foundation of Algodoo makes it a great teaching and learning aid for exploring physics concepts, operating principles of machines, and even construction. Discover the creativity of others and get inspired for your next build by visiting the Algobox library. Access thousands of scenes created by the Algodoo community and share your own creations by signing up for an Algobox account. Algodoo offers endless fun for users of all ages. Download the app now and start building, and search for #Algodoo on YouTube or social media to explore videos showcasing imaginative creations from our global community.
Chalk Board
This app offers a realistic chalkboard drawing experience with various chalk colors and adjustable brush sizes. It's perfect for quick notes, creative sketching, or as a fun learning tool for children. Share your creations easily on social media.
- Realistic chalkboard textures
- Multiple chalk colors
- Adjustable brush size
- Optional chalk brush texture
- Social media sharing
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Chalkboard is a chalkboard like easy drawing tool with realistic textures. Can be used as a scratch paper to record inspiration, share ideas; also used as a child learning to draw, children drawing, reading a small blackboard. 【Features】 · Draw on a Blackboard with any color chalks · You can choose whether to enable chalk brush texture · Brush size can be adjusted at will · Can share to Instagram, Twitter, Facebook 【Contact us】 Gmail:drawerfree@gmail.com
Screenshots
Verdict
The clearest difference is price: Chalk Board at Free against Algodoo's $7.99. Chalk Board also leads on rating (4.5 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 ratings volume and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Chalk Board is free to download; Algodoo costs $7.99 up front. Chalk Board sells 1 one-off in-app purchase. Algodoo asks for nothing beyond the download.
Chalk Board holds the better App Store score, 4.5 against 3.8. Both are backed by a comparable volume of ratings — 1.2K and 810 respectively. Written reviews complicate that: 59% of Algodoo's written reviews are positive against 50% of Chalk Board's, so the app with the better star average is not the one people write more warmly about.
Algodoo ships an update monthly, Chalk Board every 6 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | Algodoo | Chalk Board |
|---|---|---|
| Price | $7.99 | Free — better |
| Rating | 3.8 (1.2K ratings) | 4.5 (810 ratings) — better |
| Positive reviews | 58.7% of reviews — better | 50.0% of reviews |
| Number of ratings | 1.2K — better | 810 |
| Update frequency | Monthly — better | Every 6 months |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 12.4 |
| Further details — not scored | ||
| Size | 29 MB | 129 MB |
| Age rating | 9+ | 4+ |
| Developer | Algoryx Simulation AB | An Banh |
Customer experience
Algodoo
Chalk Board
User reviews
Algodoo
From 1.2K App Store ratingsWhat we love
- 🚀 Great physics simulation
- 👍 Interesting and fun to use
- 💡 Ability to create and share creations
- 🚀 No ads
Room to improve
- 🐛 Frequent crashes and bugs
- 🐛 Issues with loading and saving scenes
- 🐛 Textures and images not working properly
- 🐛 Laggy performance with complex scenes
Chalk Board
From 810 App Store ratingsWhat we love
- 👍 Wonderful
- 💡 Great for playing games
- 👍 Nice chalkboard
Room to improve
- 🐛 Undo function glitched
- 🐛 No eraser
- 🐛 Ads disturbed
- 🐛 Requires internet
- 🐛 Too many ads
Bugs and requests
Algodoo
Reported bugs
4 issues- 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
4 requests- 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
Chalk Board
Reported bugs
2 issues- Undo function glitched
- Doesn't work without internet
Requested features
4 requests- Add eraser functionality
- Ability to scroll down infinitely
- Add chalk sound effects
- Variety of chalk colors
In-app purchases
Algodoo
No in-app purchases
Chalk Board
- Upgrade Pro version$0.99
Questions
Is Algodoo free?
Is Chalk Board free?
Which has better reviews, Algodoo or Chalk Board?
Do Algodoo or Chalk Board have ads?
Which is updated more often, Algodoo or Chalk Board?
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