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Free to start. Room to grow.

Simulate every board and part free, forever. Go Pro when it is time to build it for real.

Free
$0forever

For anyone learning electronics.

Start free
  • Unlimited simulation
  • Every board and part
  • 10 public projects
  • 5 Mokxi AI questions a day
  • Real WiFi internet
ProMost popular
$7.99/ month

For when you build it for real.

  • Everything in Free, plus:
  • Upload to a real board
  • Real Schematics
  • KiCad export
  • Export without a badge
  • Unlimited private projects
  • Works offline
  • 100 Mokxi AI questions a day
  • EE lab and exam prep
  • Mokxi for VS Code
  • Unlimited MCP builds
  • Mokxi CLI
  • Commercial use

14-day money backSecure checkout by Stripe

Lifetime Pro
$199one payment

Everything in Pro, one payment.

  • Everything in Pro
  • 25 Mokxi AI questions a day
  • AI builds from packs
  • No subscription

Paid once, in US dollars

Classroom
$9.99/ student / year

For a teacher and a class of 5 or more.

Free 30-day trial
  • Everything in Pro, plus:
  • Every student gets Pro
  • Your own seat free
  • From 5 students
  • Card, invoice or PO
  • 30 days free, 20 students

Compare all features

Schools

Students at these schools build with Mokxi

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Compare all features

Every plan, row by row.

Build and save

Every board and part
Write and run your own codeYour code is built right in your browser, so there is no waiting in line.
See messages from your code (Serial Monitor)
Practice web requests on WiFi boardsYour WiFi board can talk to a pretend web service, and you see every message.
Use it without an account
Download your sketch to a real boardUpload over USB in one press, or get a .hex, .bin or .uf2 file. The Arduino IDE steps stay free.
Schematic view of your circuitYour breadboard drawn with standard symbols beside it, kept up to date as you build.
Build guide and Shopping listA printable guide to build it for real, step by step, and a list of parts to buy (CSV).
Save projects to your accountNew projects on Free are public. Lessons never count, and nobody loses a project they have.
Unlimited
Version history for each projectOpen an older save, bring it back, or open it as a copy. Older saves are kept for Pro.
All 200 saves
Name, star and compare savesSee what changed in the code and the wiring between any two saves, side by side.
Connect WiFi boards to the real internetReal web services and MQTT. Sign in to use it. Students need their teacher to turn it on.
1,000 a day
Private projectsClass students and children under 13 are always private, free. Ones you already have stay private.
Share by link only (unlisted)Anyone with the link can open it, and it stays out of the gallery and search.
Commercial useYour projects are yours. Mokxi never claims them, and a mention is always welcome.
Yes, and private

Share and work together

Work on a project with friends at the same timeEveryone sees the same circuit and can change it live.
No limit
Invite people by email
Share a project with a link
Code zipsArduino IDE, PlatformIO and Wokwi zips of the project.
KiCad exportThe KiCad schematic and netlist of your circuit, for your PCB tool.
PCB filesThe Gerber, drill, parts and placement files of a board you lay out. Laying it out is free.
Export pictures and the parts listPNG and SVG pictures with no badge, and a parts list (CSV).
Record a video or GIF of your circuitWith the Serial Monitor on it if you like, for YouTube or a class assignment.
5 min, no badge
Put a project on your own websiteThe badge is a small “made with mokxi.com” label in the corner.
Yes, no badge
Your own profile page
Your name on projects you share

Teach a class

Join a class your teacher madeStudents never need a paid plan to join a class.
Make your own classesStudents are counted across all your classes. Free teachers can try it for 30 days.
Yes, 10 students in all
Give your students Pro featuresWhile they are in your class, students get Pro limits and no badge.
Send a starter project to a class
Student logins with no emailPrint login cards with a picture or word password. Works for students under 13.
Copy a class, or start from our course
See your students’ work in one placeOne live page shows what each student is building.
Automatic checks on assignmentsMokxi checks each student’s work against the goals you set.
Download grades and rosters (CSV)

Help and extras

Mokxi AI, the helper that explains what is wrongPacks and Mokxi AI Boost add more. At a regional price, paid plans get fewer in step.
100 a day (50 on the trial)
EE lab and exam prepGraded labs, viva practice and certificates at /lab. Free has module 1 and each first challenge.
Mokxi AI check, which finds wiring and code mistakesIt runs in your browser, so it has no limit on any plan.
Pay with a school purchase orderYour school gets an invoice and pays it within 30 days.
Run sketches from the terminal (mokxi run)The command line tool runs a sketch on your own machine, free, with no account.
Mokxi for VS CodeEdit, run and simulate your projects from VS Code.
Mokxi MCP serverConnect an AI assistant that speaks MCP and ask it to build a circuit in Mokxi.
Unlimited
Works offlineBuild, compile, simulate and save with no internet. Mokxi AI, sharing and live rooms need it.
CI for public repositories (GitHub Action and CLI)Run your circuit tests on every push of an open-source project on GitHub or GitLab, free.
CI for private repositoriesRun your circuit tests on every push of a private repository. It comes with Pro.
Run circuits from your own code (API)Minutes of simulated time each month. On Classroom, your class shares them.
2,000 min a month
Free$0 / monthPro$7.99 / monthClassroom$9.99 / student / year
Build and save
Every board and part
Write and run your own codeYour code is built right in your browser, so there is no waiting in line.
See messages from your code (Serial Monitor)
Practice web requests on WiFi boardsYour WiFi board can talk to a pretend web service, and you see every message.
Use it without an account
Download your sketch to a real boardUpload over USB in one press, or get a .hex, .bin or .uf2 file. The Arduino IDE steps stay free.
Schematic view of your circuitYour breadboard drawn with standard symbols beside it, kept up to date as you build.
Build guide and Shopping listA printable guide to build it for real, step by step, and a list of parts to buy (CSV).
Save projects to your accountNew projects on Free are public. Lessons never count, and nobody loses a project they have.10, publicUnlimitedUnlimited
Version history for each projectOpen an older save, bring it back, or open it as a copy. Older saves are kept for Pro.Last 5 savesAll 200 savesAll 200 saves
Name, star and compare savesSee what changed in the code and the wiring between any two saves, side by side.
Connect WiFi boards to the real internetReal web services and MQTT. Sign in to use it. Students need their teacher to turn it on.100 requests a day1,000 a day1,000 a day
Private projectsClass students and children under 13 are always private, free. Ones you already have stay private.
Share by link only (unlisted)Anyone with the link can open it, and it stays out of the gallery and search.
Commercial useYour projects are yours. Mokxi never claims them, and a mention is always welcome.Yes, projects publicYes, and privateYes, and private
Share and work together
Work on a project with friends at the same timeEveryone sees the same circuit and can change it live.You + 1 friendNo limitNo limit
Invite people by email
Share a project with a link
Code zipsArduino IDE, PlatformIO and Wokwi zips of the project.
KiCad exportThe KiCad schematic and netlist of your circuit, for your PCB tool.
PCB filesThe Gerber, drill, parts and placement files of a board you lay out. Laying it out is free.
Export pictures and the parts listPNG and SVG pictures with no badge, and a parts list (CSV).
Record a video or GIF of your circuitWith the Serial Monitor on it if you like, for YouTube or a class assignment.10 sec, with badge5 min, no badge5 min, no badge
Put a project on your own websiteThe badge is a small “made with mokxi.com” label in the corner.Yes, with badgeYes, no badgeYes, no badge
Your own profile page
Your name on projects you share
Teach a class
Join a class your teacher madeStudents never need a paid plan to join a class.
Make your own classesStudents are counted across all your classes. Free teachers can try it for 30 days.Yes, 10 students in allYes, one seat a student
Give your students Pro featuresWhile they are in your class, students get Pro limits and no badge.
Send a starter project to a class
Student logins with no emailPrint login cards with a picture or word password. Works for students under 13.
Copy a class, or start from our course
See your students’ work in one placeOne live page shows what each student is building.
Automatic checks on assignmentsMokxi checks each student’s work against the goals you set.
Download grades and rosters (CSV)
Help and extras
Mokxi AI, the helper that explains what is wrongPacks and Mokxi AI Boost add more. At a regional price, paid plans get fewer in step.5 a day100 a day (50 on the trial)100 a day
EE lab and exam prepGraded labs, viva practice and certificates at /lab. Free has module 1 and each first challenge.Module 1
Mokxi AI check, which finds wiring and code mistakesIt runs in your browser, so it has no limit on any plan.
Pay with a school purchase orderYour school gets an invoice and pays it within 30 days.
Run sketches from the terminal (mokxi run)The command line tool runs a sketch on your own machine, free, with no account.
Mokxi for VS CodeEdit, run and simulate your projects from VS Code.
Mokxi MCP serverConnect an AI assistant that speaks MCP and ask it to build a circuit in Mokxi.10 projects a dayUnlimitedUnlimited
Works offlineBuild, compile, simulate and save with no internet. Mokxi AI, sharing and live rooms need it.
CI for public repositories (GitHub Action and CLI)Run your circuit tests on every push of an open-source project on GitHub or GitLab, free.
CI for private repositoriesRun your circuit tests on every push of a private repository. It comes with Pro.
Run circuits from your own code (API)Minutes of simulated time each month. On Classroom, your class shares them.100 min a month2,000 min a month2,000 min, shared
Start buildingStart freePrice your class
Reviews

What makers say

Share your story

“The AI checker helps check and correct my circuits, and it has way more components than Tinkercad. As a student I really appreciate the tool.”

ChloeEngineering student

“I’d been looking for a real online electronic simulator that was intuitive and complete when I found Mokxi. I was able to quickly import a Fritzing file and my Arduino sketch and start testing. Mokxi has all of the makings for the best online Arduino simulator I have been able to find!”

JayModel builderFeatured in his DioramaOS post

“I’m using Mokxi to develop and simulate an STM32-based four-wheel-drive robot car before building the actual hardware. It allows me to experiment with DC motor control, PWM, RPM measurement using photointerrupters, and different acceleration, braking, and reversing strategies, helping me understand and refine the system before implementing it in real life.”

NusretRobot car builder, Hamburg
For teachers

For teachers and schools

Classroom puts your whole class on Pro, billed once a year.

Try it with one class free for 30 days first, no card needed.

Paying by purchase order?

$9.99 a student a year, from 5 students. Your own seat is free.

Classroom
$199.80
a year for 20 students

Secure checkout by Stripe

Mokxi AI

Mokxi AI questions a day

  • 5Free

    $0

    Free forever

  • 50Pro trial

    7 days free

    Then $7.99 a month

  • 100Paid plans15 builds a month

    $7.99

    a month

Question packs

  • 5 questions

    $1

  • 50 questions

    $5

    Save 50%

  • 150 questions

    Most popular

    $12

    Save 60%

  • 375 questions

    Best value

    $29

    Save 61%

Mokxi AI Boost

+50 questions every day, on any plan. Cancel any time.

$4.99 a month

Give a year of ProOne payment, no renewal. They open it when they’re ready.Give a gift
Frequently asked questions

Questions, answered.

Can I try Pro before I pay?

Yes. Every account can try Pro free for 7 days, once. It takes a card, nothing is charged for those days, and if you cancel before they end you pay nothing. It starts when you choose it.

Can I cancel anytime?

Yes, in one press from your account page. Your plan runs to the end of what you paid for.

Do you offer refunds?

Yes, once per account. Write to us within 14 days of a payment and we refund all of it. Lifetime Pro is refunded in full within 14 days of buying it.

Is there a student discount?

Yes. Students get Pro at half price, $3.99 a month or $29.99 a year, with a school email.

How does Classroom work?

Classroom is $9.99 a student a year, from 5 students. Your own seat is free, and every student gets Pro in class. Try one class of 20 free for 30 days.

Can my school pay by purchase order?

Yes. Get a written quote in minutes, and pay the invoice within 30 days.

What happens to my projects if a plan ends?

They stay yours, exactly as they are. Nothing is deleted, and a private project stays private.

Can I pay in my own currency?

Prices are set in US dollars. The cards show an estimate in your currency, and Stripe shows the exact amount before you pay.

Simulate your circuit in minutes. Build it for real with Pro.

Start free