Comparison

Thermonator vs MIT App Inventor

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

Head to head
About

Thermonator

Features
Read full description

Thermonator: The Matter Maker is an engaging and educational app designed to help users see their own theories about how states of matter change from solids to liquids to gases. By manipulating and animating dots that move and collide into one another, users explore different properties of particles while modeling different states of matter. Go beyond static drawings with the Thermonator. Control the speed, attraction, bounce, and gravity of yellow and purple dots. Predict what will happen when you remove the divider that separates different dots and watch the fast particles (gas) bump into the slow particles (solid). Change kinetic parameters to understand that temperature is not an amount of stuff, but rather is best treated as the relative speed of particles. The Thermonator also helps users construct the causal agents for phase changes of matter, such as the change of particle speeds after colliding with other particles. The Thermonator was designed in collaboration with the award-winning FableVision multimedia production studio. This material is based upon work supported by the National Science Foundation under grant DRL- 1621299. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. A lesson plan for this app is available at http://short.concord.org/8a

About

MIT App Inventor

Learn programming and build mobile applications using a visual, block-based interface. This educational tool helps users understand computational thinking and design their own projects, with built-in tutorials and over 60 components for diverse app creation.

Highlights
  • Visual block-based programming
  • Mobile app development
  • Computational thinking education
  • Built-in tutorials
  • Over 60 app components
  • Project testing and debugging
Features
Read full description

MIT App Inventor is an educational tool to learn computational thinking and computational action principles through building mobile apps. Used by over one million people worldwide every year, it is one of the premier platforms for computer science education. Use this companion app to test drive projects, debug blocks code, and show your friends and family your creations. Using a blocks based programming language, design and code your own projects, or use one of the many books and curricula to learn about coding. App Inventor also includes built-in tutorials for running student workshops. This version of App Inventor includes over 60 components, from user interface elements such as buttons and switches, to sensors, connectivity and multimedia components so your projects can interact with the world.

Screenshots

Thermonator4 screens
MIT App Inventor4 screens

Verdict

The call

The clearest difference is iOS requirement: Thermonator at 10.0 against MIT App Inventor's 15.0. On price, update cadence, 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.

UpkeepUpdate frequency

Thermonator ships an update every 2 months, MIT App Inventor every 3 months. The most recent releases landed on September 15, 2026 and September 24, 2026 respectively.

Scorecard1 real difference · 9 level
Thermonator versus MIT App Inventor: the parameters behind the verdict, then further details
ParameterThermonatorMIT App Inventor
PriceFreeFree
Rating—2.6 (7 ratings) — better
Positive reviews—19.6% of reviews
Number of ratings—7 — better
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.0 — better15.0
Further details — not scored
Size118 MB49 MB
Age rating4+4+
DeveloperThe Concord ConsortiumMassachusetts Institute of Technology

Bugs and requests

Thermonator

Not enough reviews yet to summarise bugs or requests.

MIT App Inventor

Reported bugs

3 issues
  • App frequently crashes or freezes
  • Connectivity problems when trying to test apps
  • Inconsistent behavior and unexpected errors

Requested features

3 requests
  • Improved compatibility with modern devices and operating systems
  • More intuitive and user-friendly interface
  • Better error handling and debugging tools

In-app purchases

None

Thermonator

No in-app purchases

None

MIT App Inventor

No in-app purchases

Questions

Is Thermonator free?
Thermonator is free to download, with no in-app purchases.
Is MIT App Inventor free?
MIT App Inventor is free to download, with no in-app purchases.
Do Thermonator or MIT App Inventor have ads?
Neither Thermonator nor MIT App Inventor shows ads.
Which is updated more often, Thermonator or MIT App Inventor?
Thermonator ships an update every 2 months, and MIT App Inventor every 3 months. Most recently, Thermonator was updated on September 15, 2026 and MIT App Inventor on September 24, 2026.

Other comparisons