Algodoo vs Backwards Talk
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.
Backwards Talk
This app reverses typed phrases, allowing you to record yourself speaking them backward. It then plays back your recording forwards, so you can hear how close you were to the original. It's a fun and addictive way to challenge your speaking and listening skills.
- Reverse typed phrases
- Record yourself speaking backwards
- Hear playback forwards
- Challenge friends
- Train your ear
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Ever wondered what you sound like... backwards? With Backwards Talk, you type a phrase, the app flips it, and you try to say it in reverse. Then, it reverses your recording—so you can hear how close you got to the original phrase. It’s weird, hilarious, and oddly addictive. It’s like a party trick for your brain. • Type any phrase • Get it reversed instantly • Record yourself trying to say it backwards • Hear it played back—forwards! Perfect for challenges with friends, training your ear, or just laughing at your own weird noises. “correct” has never sounded so wrong.
Screenshots
Verdict
The clearest difference is price: Backwards Talk at Free against Algodoo's $7.99. Backwards Talk also leads on update cadence (every 5 days vs monthly) and device support (3 vs 1). Algodoo's advantage is rating (3.8 vs 2.3) and review sentiment (59% vs 33%). On ads, in-app purchases and monetization model 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
Backwards Talk is free to download; Algodoo costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Algodoo holds the better App Store score, 3.8 against 2.3. That said, the two scores are not equally well evidenced: Algodoo has 878 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 59% of Algodoo's written reviews are positive against 33% of Backwards Talk's.
Algodoo ships an update monthly, Backwards Talk every 5 days. The most recent releases landed on September 24, 2026 and August 9, 2026 respectively.
| Parameter | Algodoo | Backwards Talk |
|---|---|---|
| Price | $7.99 | Free — better |
| Rating | 3.8 (878 ratings) — better | 2.3 (3 ratings) |
| Positive reviews | 59.1% of reviews — better | 33.3% of reviews |
| Number of ratings | 878 — better | 3 |
| Update frequency | Monthly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 29 MB | 18 MB |
| Age rating | 9+ | 4+ |
| Developer | Algoryx Simulation AB | Sebastian Ekstrom |
Customer experience
Algodoo
Backwards Talk
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
Backwards Talk
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Algodoo
No in-app purchases
Backwards Talk
No in-app purchases
Questions
Is Algodoo free?
Is Backwards Talk free?
Which has better reviews, Algodoo or Backwards Talk?
Do Algodoo or Backwards Talk have ads?
Which is updated more often, Algodoo or Backwards Talk?
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