Comparison

Algodoo vs Say It Backwards App Lite

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

Say It Backwards App Lite

This app lets you record any sound and play it back in reverse. It's a simple tool for entertainment, allowing you to explore phonetic palindromes and discover surprising reversed audio from songs and words. Have fun experimenting with reversed speech and sounds.

Highlights
  • Record any sound
  • Play audio in reverse
  • Explore phonetic palindromes
  • Experiment with reversed speech
  • Surprising reversed audio effects
Features
Read full description

Say It Backwards app is a sound recorder app with one goal - record a sound and play it back in reverse. Thats it. Such simple tool gives you enormous possibilities. I personally play with my kids and entertain my friends. Check how "NOW" becomes "ONE", and if you practice a little you can learn to say short sentences backwards. Listening to known songs, jingles or other sounds can be surprising. Give it a try with English words: "easy", "Funny enough", "Amor Roma", "say yes" - those are all phonetic palindromes. While making this app I have realized there is a whole conspiration theory about backmasking - give it a search on Youtube or Wikipedia - you will be suprised. My favourite one is "Oh no, you're playing the record backwards. Watch out, you might ruin your needle" ... at least using Say It Backwards app you will not ruin your needle :) Please take a note there are ads being served in a form of a beautiful banner on the top of you screen. If for some reason you prefer to avoid it either purchase full version of my app or board a plane as the ads will not get to you while you are in airplane mode. I do hope you will decide to buy a full version though. Planes do emit tonnes of carbon dioxide you know ... :)

Screenshots

Say It Backwards App Lite1 screens

Verdict

The call

The clearest difference is price: Say It Backwards App Lite at Free against Algodoo's $7.99. Say It Backwards App Lite also leads on rating (4.5 vs 3.8) and update cadence (every 2 weeks vs monthly). Algodoo's advantage is in-app purchases (none vs 1) and ads (none vs shown). On review sentiment and device support 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

Say It Backwards App Lite is free to download; Algodoo costs $7.99 up front. Say It Backwards App Lite sells 1 one-off in-app purchase. Algodoo asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Say It Backwards App Lite holds the better App Store score, 4.5 against 3.8. That said, the two scores are not equally well evidenced: Say It Backwards App Lite has 9.8K ratings behind it against 878, 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 65% of Say It Backwards App Lite's.

UpkeepUpdate frequency

Algodoo ships an update monthly, Say It Backwards App Lite every 2 weeks. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.

Scorecard8 real differences · 2 level
Algodoo versus Say It Backwards App Lite: the parameters behind the verdict, then further details
ParameterAlgodooSay It Backwards App Lite
Price$7.99Free — better
Rating3.8 (878 ratings)4.5 (9.8K ratings) — better
Positive reviews59.1% of reviews64.5% of reviews — better
Number of ratings8789.8K — better
Update frequencyMonthlyEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPadiPhone, iPad — better
Requires iOS12.0 — better16.6
Further details — not scored
Size29 MB28 MB
Age rating9+4+
DeveloperAlgoryx Simulation ABpl ayground

Customer experience

Algodoo

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

Say It Backwards App Lite

All ratings9,777 ratings
Positive88.1%
Neutral5.2%
Negative6.7%
Written reviews248 reviews
Positive64.5%
Neutral6.5%
Negative29.0%

User reviews

Algodoo

From 878 App Store ratings

What 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

Say It Backwards App Lite

From 9.8K App Store ratings

What we love

  • 👍 Fun and entertaining
  • 🤩 Unique and interesting feature
  • ⭐ Works well and as expected
  • 🎉 Enjoyable experience
  • 🤗 Great for passing time

Room to improve

  • 🐛 Inconsistent or inaccurate playback
  • 🔇 Audio issues or no sound
  • 🔍 Limited functionality
  • 🤔 Confusing or unclear behavior
  • 🔋 Performance or battery drain problems

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

Say It Backwards App Lite

Reported bugs

5 issues
  • Crashes or freezes the app
  • Microphone not working properly
  • Playback cuts off or gets distorted
  • Compatibility issues with newer devices
  • Ads disrupt the user experience

Requested features

5 requests
  • Add ability to play songs/audio backwards
  • Improve audio quality and clarity of playback
  • Expand recording time limit
  • Provide more customization options
  • Integrate with other apps or services

In-app purchases

None

Algodoo

No in-app purchases

1 purchases

Say It Backwards App Lite

One-time1
  • Remove Ads. Support developer!$4.99

Questions

Is Algodoo free?
Algodoo costs $7.99, with no in-app purchases.
Is Say It Backwards App Lite free?
Say It Backwards App Lite is free to download, with in-app purchases available.
Which has better reviews, Algodoo or Say It Backwards App Lite?
Say It Backwards App Lite is rated higher. Algodoo averages 3.8 out of 5 from 878 ratings, while Say It Backwards App Lite averages 4.5 from 9.8K ratings.
Do Algodoo or Say It Backwards App Lite have ads?
Say It Backwards App Lite shows ads; Algodoo does not.
Which is updated more often, Algodoo or Say It Backwards App Lite?
Algodoo ships an update monthly, and Say It Backwards App Lite every 2 weeks. Most recently, Algodoo was updated on September 24, 2026 and Say It Backwards App Lite on September 22, 2026.

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