Prices are on /pricing, shown in your currency where we can. Pro and Classroom are lower in many countries (see regional prices), so this page talks about what Pro gives rather than a number. Classroom is $9.99 a student a year in the US, and less a student where a regional price applies.
Free
Free, forever. Building, wiring and simulating are free and unlimited: every board, every part, the breadboard, the wires, the compiler in the tab, the serial monitor, virtual WiFi with a pretend web service, sharing by link, the gallery and a public profile page. Arduino libraries too: any library in the Arduino Library Manager installs in one tap, and Add library, under the code, takes your own zip or .h and .cpp files, on every plan, signed in or not.
Free saves 10 projects, and they are public: a new project is in the gallery and on your profile page, and anyone can find it, open it and remix it. Before your first public save, the editor says so once. The projects lessons make for you never count toward the 10.
Already have more than 10? You keep every one of them. Each one still opens, edits, runs and saves as usual; nothing is deleted, hidden or made read-only. Only a new project (or a copy) waits until you are under 10, or until you move to Pro. Saving to the editor when you are full keeps the work in this browser and opens a card: Pro, the free trial if you have not had it, or Free up room.
Private and link-only projects are paid: they come with Pro. A project you made private or link-only before October 12, 2026 stays exactly that on Free: it keeps saving, and ending a paid plan or the Pro trial never makes a project public. You can still make one of those public yourself, and then it stays public on Free.
Always private, and free, on any plan: a student's projects in a class (a student "behind a teacher's license"), and the projects of a child under 13 whose account we hold with consent. Their projects are private and stay private, with no limit on how many: nobody else can open one by link or find it in the gallery.
What else Free caps: the newest five saves of history per project to open and restore, fifty blocks, a live room of you and one friend, five questions a day to Mokxi AI, Mokxi's helper (signed in only), recordings of ten seconds with a badge, and 100 API minutes a month. Older saves are still kept, up to two hundred, and show in History with a padlock. Checkup and its one-tap fixes have no limit.
Pro tools on Free. Sending a sketch to a real board (Upload to board, and the .hex, .bin and .uf2 files), the exports with no badge (the PNG and SVG pictures and the parts list), the Build guide with its Shopping list, and the Schematic view come with Pro. Each button shows what Pro does and the way to try it free: on Free the Build guide opens as a blurred preview of your own project's guide, and the Schematic view as a dimmed one. The code is always in the editor to copy, and a board's Arduino IDE steps stay free. A student in a class and a child under 13 keep all of these on any plan.
Real internet on Free. Signed in, with your email address confirmed, a WiFi board can reach real web services and publish to public MQTT brokers through the Cloud panel's Real internet switch: 100 requests a day per account and 50 per project. Signed out, the board keeps the simulated network. A student in a class and a child under 13 need their teacher to turn it on.
The EE lab at /lab: Free opens module 1 in full and the first challenge of every module. The rest, and the certificates, come with Pro.
You do not need an account at all to use it. That is not a trial; signed out is a supported way to work.
Choosing Private or Link on Free. Share â–¾ in the editor shows Private and Link marked (Pro). Choosing one keeps the project as it is and opens one card: Pro, with the monthly price chosen and the year one press away with its saving, then one press to Checkout, and Keep it public as the free way on. Saving is never blocked.
Classes and the teacher tools are not on Free: making a class, the roster, handing work out, the wall, auto-graded checks and the roster and gradebook CSV exports come with Pro and Classroom. A Free account can join any class as a student, and a teacher can try all of it free for thirty days with the 30-day trial.
Pro
Pro is the one paid plan for a maker, and the recommended one. It is billed monthly or yearly, and a year saves you at least two months. Students pay half. Everything in Free, plus:
- No limit on projects, private or link-only whenever you like
- Send sketches to a real board: Upload to board over USB in one press, or the .hex, .bin or .uf2 file for your board
- Clean exports: PNG and SVG pictures with no badge, the parts list, and the KiCad schematic and netlist. The Arduino IDE, PlatformIO and Wokwi zips are free on every plan
- The Build guide: a printable guide to building your project for real, with its Shopping list as a CSV (export)
- The Schematic view, drawn beside the breadboard as you build
- A hundred questions a day to Mokxi AI, where Free has five (the free trial has fifty)
- Two hundred saves of history per project, all of them open to restore, and the tools to name, star and compare them side by side (version history)
- Embedding with no badge
- Live collaboration with no limit on people (a room holds up to 100 at a time, as fair use)
- Mokxi AI builds: 15 whole projects a month built by Mokxi AI, where Free has none (up to 5 a month on Student and at a regional price, fewer at the deepest discounts; the trial has three in all)
- Mokxi for VS Code: open, sync and run your projects from VS Code
- Mokxi CI for private repositories: the GitHub Action and the command line tool in a CI job (public repositories are free on every plan)
- More real internet for WiFi boards: 1,000 requests a day through the Cloud panel's Real internet switch, where Free has 100, with bigger replies and a faster rate (real internet)
- The whole EE lab at /lab: every module, viva practice and the certificates
- Unlimited classes, ten students between them, with the class tools: the roster, handing work out, the dashboard and its wall, auto-graded checks, and roster and gradebook CSVs
- Recordings of five minutes, as a video, or a GIF of up to thirty seconds, with no badge
- Five hundred blocks and 2,000 API minutes a month
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. See the Pro trial.
Prefer no subscription? /pricing also sells Pro passes: one month or three months of Pro, paid once, that never renew. Signed in on Free, you can also buy one year of Pro as a single payment at the yearly price, with no renewal.
Lifetime Pro
Lifetime Pro is Pro, paid once, for good: one payment of $199 in the US, less at a regional price (never more than 40% off, so $119.40 at the least), and it never renews. It has every Pro tool. Its Mokxi AI is questions only: 25 questions a day, the same wherever you are, and no monthly builds. Builds and more questions come from packs or Mokxi AI Boost, as for anyone. Nothing renews, so nothing can lapse.
It shows at the foot of Pro's card on /pricing and in the upgrade sheet, in every country where Pro is sold, and it is not sold in the Android app. If you pay for Pro by the month or the year when you buy it, that subscription is set to end with the period you already paid for, so nothing bills twice.
Ultra (no longer sold)
Ultra was the plan above Pro: everything in Pro, 500 Mokxi AI questions a day, 50 builds a month, priority support and 5,000 API minutes a month. It is not sold any more. Mokxi CI for private repositories now comes with Pro, so Ultra has no CI that Pro lacks. If you already have Ultra, it keeps running and renewing exactly as before, with all of that, and you change or cancel it from Billing in Settings as usual. For one person who wants more than Pro, choose Lifetime Pro or add Mokxi AI Boost.
Classroom
The plan for a class, or a whole school. $9.99 a student a year in the US (less in many countries, see regional prices), billed once a year, from 5 students ($49.95 a year at least in the US). Your own seat is free: you pay for the students, not for yourself. It adds:
- Everything in Pro, for you
- Pro's room for your students while they are in your classes: unlimited projects, two hundred saves each, Pro's blocks and live room, and no badge on their PNG, SVG and embed exports
- Live collaboration with the whole class: the whole room on one project, with no limit on people
- A class roster, handing a starter project to a class, checks that grade every submission, and the teacher dashboard
- Less a head for more students: 10% off from 50 students, 20% off from 150 and 30% off from 500
Try it free first. A teacher on Free can run one class of up to 20 students for 30 days, with every teacher tool and no card. See the 30-day trial.
Ways to pay. By card, from the calculator on /pricing or /classroom. Or by invoice or purchase order: type your number of students into the calculator and fill in the quote form under it. A written quote comes back in minutes as a PDF, and your school pays it by card or on a net 30 invoice. The seats switch on when the invoice is paid. Prefer to talk first? Press Talk to us on /classroom, and a real person replies within one working day.
Seats are counted across all your classes, a student in two of them counted once. To add or remove students later, change the number in Billing in Settings, and Stripe works out the part of the year. A school with several teachers asks for one quote for each teacher, each with their own classes. We sign your data privacy agreement and help set up your rosters.
Retired plans: Teacher and Pro for work
These two plans are not sold any more. If you already have one, it keeps running and renewing exactly as before, and you change or cancel it from Billing in Settings as usual. A new class goes on Classroom. For a team, choose Pro for each person, or write to us from support.
VS Code and CI. Mokxi for VS Code is part of Pro. CI runs (the GitHub
Action, and the command line tool in a CI job) are free for public
repositories. For private repositories, CI comes with Pro (and the student
price, Lifetime, Classroom and the trial); an account that has Ultra or Pro for
work keeps it too. Running a sketch on your own computer with
mokxi run stays free, with no account. If you used Mokxi for VS Code or CI in
the 60 days before October 12, 2026, you keep them until December 11, 2026,
and the tool tells you so.
Student
Pro at half the price, verified with a school email address, monthly or yearly. It is not a fourth column on the pricing table because it is not a different plan: it is Pro, at a student's price, for somebody who has proved they study. See the student discount.
Mokxi AI question packs and Mokxi AI Boost
On any plan, Free included, you can buy more questions for Mokxi AI when the day's run out:
- Packs, bought once. They never expire. Their questions are used after the day's questions, and their builds after your plan's monthly builds. The packs are 5 questions, 5 builds with 50 questions, 10 builds with 150 questions and, for heavy users, 25 builds with 375 questions.
- Mokxi AI Boost, 50 more questions every day for a small monthly price. Cancel it any time in Mokxi AI's panel.
You buy both from Mokxi AI's panel, at your local price. They are not sold signed out, to class students or younger children's accounts, or in the Android app. The packs, how paying works and the rest are in getting more questions.
Regional prices
Pro, Student and Mokxi AI's packs and Boost cost less where money goes further. Each country has its own discount, from 10% to 75% off, set from what people there pay for everyday subscriptions. A country not on the list pays the full price. At a regional price, a paid plan's Mokxi AI questions and builds scale down with the price (half the questions at 50% off). Lifetime Pro takes your country's discount too, but never more than 40% off. Classroom seats take your country's discount as well, never under $2.00 a student, with the bulk step for 50 students or more on top; a Classroom teacher's own Mokxi AI does not scale down. A school's written quote is in US dollars everywhere.
The pricing page shows your price with your country named under it: "Regional price for India: 75% off." Which country is read from your connection, not chosen on the page, and the card that pays should be from the same country. If it is from a country with a smaller discount, the next bill is at that country's price; the one you already paid stands.
Prices are set in US dollars. In many countries the cards also show an estimate in your own currency, and Stripe Checkout shows the exact amount before you pay. Every plan opens on Monthly, with the year beside it as the saving. Where a discounted month would be too small to cover the card fees, the month takes a smaller discount, or the plan is sold by the year there, and the line under the price says which.
In the Android app, Google Play sets the price, in your currency.
The class seat caps
Worth knowing before you plan a lesson:
| Plan | People in one class | Classes you may own |
|---|---|---|
| Free | none of its own; joins any class | 0 |
| Pro | 11 (ten students and you) | no limit |
| Student | 11 (ten students and you) | no limit |
| Ultra (no longer sold) | 11 (ten students and you) | no limit |
| Classroom | the students paid for, and you | 20 |
The teacher counts as one of the people in the class. On Classroom the cap is the students paid for plus the teacher, so sixty students paid for runs classes of sixty between them, and the teacher on top. The students are counted across every class you own, once each: thirty paid for is thirty between all your classes, not thirty in each. A class set larger than the plan covers keeps everybody already in it and stops letting new people in, and the class page says so with a link to Billing in Settings.
A student in a class whose teacher is on Classroom (or is in the 30-day trial) gets Pro's projects, saves, blocks, live room and badge-free exports and embeds while they are in it, on their own free account.
Live room sizes
A different limit from class seats: this is how many people may be in one live room on a project at once, whoever's class they are in.
| Plan | People in one live room |
|---|---|
| Free | 2, including the owner |
| Pro | no limit (up to 100 at a time, as fair use) |
| Student | no limit (up to 100 at a time, as fair use) |
| Ultra (no longer sold) | no limit (up to 100 at a time, as fair use) |
| Classroom | no limit (up to 100 at a time, as fair use) |
Joining somebody else's room is free on any plan, and that is the point of a class link. See rooms.
The Black Friday sale
Mokxi has one sale in the year: Black Friday through Cyber Monday, the Friday after US Thanksgiving to the Monday after it. Inside it, an account that has never paid gets 30% off its first payment for Pro, monthly or yearly, or for the student price. The sale is offered to a brand new account too, ahead of the trial; the free trial is still there to choose instead when you ask for it. It is worked out from your own price, so a regional price takes the sale on top of it. Each account has its own code, which another account cannot use. One discount applies, whichever is bigger: a creator's code or the sale. The sale never applies to Classroom, Lifetime Pro or a gift, and every other day of the year Pro sells at its usual price.
Changing plan
Through Stripe's own customer portal, from Billing in Settings. A plan bought in the Android app is changed in Google Play instead. See billing.
What happens to your work
It stays, exactly as it is. Nothing you built is deleted or locked because a subscription ended, and a private or link-only project stays private or link-only. New projects start public on every plan. Any project can also be saved to a file and opened again anywhere with no account at all.
The full comparison table is at /pricing.