Comparison

WhenDo vs Rocket Cadets

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

Head to head
About

WhenDo

This tool provides a graphical programming environment for learning Arduino. It simplifies coding by allowing users to drag and combine blocks to create programs. The app supports wireless downloads to compatible Arduino devices and utilizes a cloud server for compilation.

Highlights
  • Graphical programming with drag-and-drop blocks
  • Clear logic structure (When, Centre Node, Do blocks)
  • Cloud server compilation
  • Wireless BLE downloads
  • Compatible with Bluetooth 4.0 Arduino chips
Features
Read full description

This is the most comprehensive graphical programming and developing tool based on Arduino. WhenDo is the most sufficient way to learn about Arduino and every basic programming logic. WhenDo is compatible with all the Arduino chips that have Bluetooth 4.0 module . Significant Features: 1. Graphical programming In this graphical programming language, user just need to drag condition and execute blocks and freely combine them. This development tool applies many amusing functions that the Arduino can accomplish in WhenDo. 2. Clear and meticulous logic Each sentence involves three elements: When block ( condition setting), Centre Node (combine When & Do block) and Do block ( execute setting ). Besides, the whole interactive User Interference environment is a big loop, which repeatedly run the program statements. 3. Cloud server compile Excellent file transfer and compile based on a Ubuntu server. Remote access to various libraries to improve its capability. 4. BLE download Wireless download the program through blueTooth 4.0 Arduino devices.

About

Rocket Cadets

Features
Read full description

Real Python โ€” not just blocks. Rocket Cadets takes kids 8โ€“12 from their first line of code to writing real Python programs and understanding how AI actually works. 100% offline. No ads, no account, no data collected. World 1 is free forever; one $14.99 purchase unlocks everything โ€” no subscription, ever. WHY PARENTS TRUST ROCKET CADETS โ€ข No ads, ever โ€ข No accounts, no sign-up โ€ข No data collected โ€” nothing leaves the device โ€ข Works 100% offline โ€” planes, road trips, no-WiFi cabins โ€ข One-time purchase โ€” no subscription, nothing renews โ€ข Family Sharing included โ€” one purchase covers your kids โ€ข A parental gate guards every purchase and every link out of the app WHAT YOUR KID ACTUALLY DOES Kids fly through 15 space worlds and 80+ missions, typing real Python in a real code editor โ€” not dragging blocks. They: โ€ข Write actual Python and watch it run โ€” draw with turtle graphics, animate rockets, solve puzzles โ€ข Explore hands-on AI playgrounds that show how AI really works โ€ข Tap any word they don't know for a plain-language explanation โ€” so they can learn on their own, no programmer parent required โ€ข Earn XP and badges and chart progress on their Flight Plan map WHAT THEY LEARN A real path from first steps to real programs: variables, loops, functions, and writing complete Python programs. Plus AI literacy โ€” how AI actually works, hands-on. This is not an AI chatbot: nothing in the app talks to an AI service, and your child never chats with one. Rocket Cadets covers concepts from the CSTA K-12 Computer Science framework. FREE TO START, HONEST TO OWN World 1 is free forever โ€” try it as long as you like. When your kid is ready for more, one $14.99 purchase unlocks all 15 worlds for good. No subscription. Nothing ever renews. Family Sharing means one purchase covers your children. FROM A PARENT WHO BUILT IT I'm a parent and an engineer. I built the app I wanted my own kid to have: one that teaches real Python and how AI actually works, works on a plane, and collects literally nothing. World 1 is free โ€” see if your kid lights up. Questions or feedback? hello@rocketcadets.com Made by Meno Data AB

Screenshots

Rocket Cadets4 screens

Verdict

The call

The clearest difference is iOS requirement: WhenDo at 8.1 against Rocket Cadets's 16.4. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

UpkeepUpdate frequency

WhenDo ships an update monthly, Rocket Cadets every 3 weeks. The most recent releases landed on October 2, 2026 and September 27, 2026 respectively.

Scorecard1 real difference ยท 7 level
WhenDo versus Rocket Cadets: the parameters behind the verdict, then further details
ParameterWhenDoRocket Cadets
PriceFreeFree
Positive reviews0.0% of reviewsโ€”
Update frequencyMonthlyEvery 3 weeks โ€” better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeโ€”
DevicesiPadiPhone, iPad โ€” better
Requires iOS8.1 โ€” better16.4
Further details โ€” not scored
Size22 MB38 MB
Age rating4+4+
DeveloperShanghai Zhiwei Robotics Co LtdMeno Data AB

In-app purchases

None

WhenDo

No in-app purchases

None

Rocket Cadets

No in-app purchases

Questions

Is WhenDo free?
WhenDo is free to download, with no in-app purchases.
Is Rocket Cadets free?
Rocket Cadets is free to download, with no in-app purchases.
Do WhenDo or Rocket Cadets have ads?
Neither WhenDo nor Rocket Cadets shows ads.
Which is updated more often, WhenDo or Rocket Cadets?
WhenDo ships an update monthly, and Rocket Cadets every 3 weeks. Most recently, WhenDo was updated on October 2, 2026 and Rocket Cadets on September 27, 2026.

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