Comparison

Algodoo vs Backwards Talk

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

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
Read full description

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.

About

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.

Highlights
  • Reverse typed phrases
  • Record yourself speaking backwards
  • Hear playback forwards
  • Challenge friends
  • Train your ear
Features
Read full description

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

Backwards Talk4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Algodoo ships an update monthly, Backwards Talk every 5 days. The most recent releases landed on September 24, 2026 and August 9, 2026 respectively.

Scorecard7 real differences · 3 level
Algodoo versus Backwards Talk: the parameters behind the verdict, then further details
ParameterAlgodooBackwards Talk
Price$7.99Free — better
Rating3.8 (878 ratings) — better2.3 (3 ratings)
Positive reviews59.1% of reviews — better33.3% of reviews
Number of ratings878 — better3
Update frequencyMonthlyEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPadiPhone, iPad, iPod — better
Requires iOS12.0 — better15.1
Further details — not scored
Size29 MB18 MB
Age rating9+4+
DeveloperAlgoryx Simulation ABSebastian Ekstrom

Customer experience

Algodoo

All ratings878 ratings
Positive69.2%
Neutral7.5%
Negative23.2%
Written reviews714 reviews
Positive59.1%
Neutral12.5%
Negative28.4%

Backwards Talk

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews3 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

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

None

Algodoo

No in-app purchases

None

Backwards Talk

No in-app purchases

Questions

Is Algodoo free?
Algodoo costs $7.99, with no in-app purchases.
Is Backwards Talk free?
Backwards Talk is free to download, with no in-app purchases.
Which has better reviews, Algodoo or Backwards Talk?
Algodoo is rated higher. Algodoo averages 3.8 out of 5 from 878 ratings, while Backwards Talk averages 2.3 from 3 ratings.
Do Algodoo or Backwards Talk have ads?
Neither Algodoo nor Backwards Talk shows ads.
Which is updated more often, Algodoo or Backwards Talk?
Algodoo ships an update monthly, and Backwards Talk every 5 days. Most recently, Algodoo was updated on September 24, 2026 and Backwards Talk on August 9, 2026.

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