Comparison

MEL Science vs KAI Robotics

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

Head to head
About

MEL Science

Explore the world of science through interactive experiments and engaging games. This app guides you through real science activities, making learning fun and hands-on. Discover molecular structures and conduct your own science projects.

Highlights
  • Conduct real science experiments
  • Interactive experiment guidance
  • Learn molecular structures
  • Science games and activities
  • Experiment assistant
  • Knowledge check tests
Read full description

MEL Science is the key to limitless adventures! Experiment, play, learn, conduct real science experiments! Play science games and conduct amazing experiments using guidance from the app. This app can be used for educational science activities or as a supplement to the MEL Science experiment kits. Find out how molecules and reactions look from the inside. Suitable for homeschool activities and science lab experiment games. MEL Chemistry will show the structures of molecules, including Sulfuric acid, Citric acid, Hydrochloric acid, Lactose, and Tin Chloride. Go through amazing experiments and make your own science projects using the experiment assistant. Pass the test at the end of each experiment to check your knowledge. Bring this science lab app to your classroom to demonstrate educational science to your students. Forget memorizing formulas — learn through firsthand experience!

About

KAI Robotics

Build and control an AI robot using your device. Collect data, train the AI model with gestures and sounds, and then play with your robot. Offers remote control and customization options for the robot's LED display.

Highlights
  • Build an AI robot
  • Gesture recognition control
  • Sound recognition control
  • Train AI models
  • Offline data processing
  • Remote control mode
  • Customizable LED display
Features
Read full description

The app for KAI: The Artificial Intelligence Robot STEM Experiment Kit: Safely explore and understand AI and the future of advanced computing technology. With the physical expeiment kit, build your own six-legged, artificial intelligence robot that moves by reacting to the gestures and sounds that you make! There are three steps to create a functioning AI model that allows you to control your robot using poses or sounds: 1. Collect data. 2. Train the AI model with your data. 3. Play with your robot using the AI model. Collect data: Use the app to easily collect the data you need to assign your own movements or sounds to your robot's functions, enabling it to walk, turn, and stop; explore the concept of machine learning as your AI robot learns the gestures and sounds to better perform the assigned functions. Gesture recognition: Choose a gesture or movement to assign to a specific function of your physical robot. For example, you can raise your right arm to trigger the "move right" function. Sound recognition: Choose a sound to assign to a specific function of your physcial robot. For example, you can whistle or clap to trigger the "move right" function. Train the AI model: The data you collected forms a dataset which is then used to create an AI model that your robot can learn from. Play with your robot: Now you can perform the poses or sounds you assigned to various actions and control your robot to move in specific ways! Additionally, the app allows you to play with the robot in remote control mode: - Use the virtual joystick or position sensor of your phone/tablet to move your robot without utilizing any of its AI functions. - Tap on predetermined facial expressions to change the face on the robot’s LED display, or use the draw or text button to customize the facial expression or text that appears on the LED display. The app has been developed to keep your data as safe and private as possible. The app works completely offline, without connection to the Internet, meaning that all calculations are made locally on your device and no image or audio data is stored by the app. This has been confirmed by an independent data protection expert. The full functionality of the app is only available in combination with the physical KAI: The Artificial Intelligence Robot STEM Experiment Kit. ***** Questions or suggestions for improvements: Mail to apps@kosmos.de We are looking forward to your feedback! ****

Screenshots

MEL Science4 screens
KAI Robotics4 screens

Verdict

The call

The clearest difference is update cadence: MEL Science at every 6 weeks against KAI Robotics's every 16 months. MEL Science also leads on review sentiment (39% vs 27%) and ratings volume (88 vs 12). KAI Robotics's advantage is iOS requirement (12.0 vs 15.6). On price, rating, ads and in-app purchases 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 3.7 for MEL Science against 3.6 for KAI Robotics. That said, the two scores are not equally well evidenced: MEL Science has 88 ratings behind it against 12, so its average is the more settled of the two. Written reviews are what separate them: 39% of MEL Science's written reviews are positive against 27% of KAI Robotics's.

UpkeepUpdate frequency

MEL Science ships an update every 6 weeks, KAI Robotics every 16 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

Scorecard4 real differences · 6 level
MEL Science versus KAI Robotics: the parameters behind the verdict, then further details
ParameterMEL ScienceKAI Robotics
PriceFreeFree
Rating3.7 (88 ratings) — better3.6 (12 ratings)
Positive reviews39.1% of reviews — better27.3% of reviews
Number of ratings88 — better12
Update frequencyEvery 6 weeks — betterEvery 16 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size130 MB68 MB
Age rating4+4+
DeveloperMEL Science LimitedFranckh-Kosmos Verlags GmbH & Co. KG

Customer experience

MEL Science

All ratings84 ratings
Positive63.1%
Neutral6.0%
Negative31.0%
Written reviews46 reviews
Positive39.1%
Neutral2.2%
Negative58.7%

KAI Robotics

All ratings12 ratings
Positive58.3%
Neutral16.7%
Negative25.0%
Written reviews11 reviews
Positive27.3%
Neutral18.2%
Negative54.5%

In-app purchases

None

MEL Science

No in-app purchases

None

KAI Robotics

No in-app purchases

Questions

Is MEL Science free?
MEL Science is free to download, with no in-app purchases.
Is KAI Robotics free?
KAI Robotics is free to download, with no in-app purchases.
Which has better reviews, MEL Science or KAI Robotics?
MEL Science is rated higher. MEL Science averages 3.7 out of 5 from 88 ratings, while KAI Robotics averages 3.6 from 12 ratings.
Do MEL Science or KAI Robotics have ads?
Neither MEL Science nor KAI Robotics shows ads.
Which is updated more often, MEL Science or KAI Robotics?
MEL Science ships an update every 6 weeks, and KAI Robotics every 16 months. Most recently, MEL Science was updated on October 24, 2026 and KAI Robotics on October 27, 2026.

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