Terms of use

Mokxi is operated by Mokxi LLC, a Colorado limited liability company ("we", "us"). By using Mokxi you agree to these terms. If you do not agree, do not use it.

1. Who can use Mokxi

Mokxi is for people 13 and older. You need to be 13 or older to make an account on your own, and making one (with your email or with Google, Microsoft, Apple or GitHub) is you telling us you are; we do not ask for a birthday. A student under 13 may have an account only with consent, given in one of two ways. Through school: the school consents on the parents' behalf, for the school's educational purpose only, under its Student Data Privacy Agreement with us or, until one is signed, through the teacher who sets up the class acting for the school under these terms and the student data privacy notice at /privacy/students. Outside school: a parent or guardian consents. The child presses "ask a parent" under the sign-up form and gives only their first name and a parent's email address; we email the parent, and the account exists only once the parent approves it from that email. A parent may also write to us from their own address, and we confirm it with them before the account is used. A child's account gets no ads and no analytics or advertising tags, nothing it makes is shown in public with a name, it never appears in the gallery or on the leaderboards, nobody is invited to copy or remix its projects, and it never gets product email or the newsletter. Anyone may use the editor without an account. If you are using Mokxi for an organization, you are agreeing on its behalf and you need the authority to do that.

Kids mode. An account that is not in a class, has no paid plan or card on file, runs no class and is not on our staff can turn on Kids mode, from the welcome question in the editor or from About you on the account page. We do not ask for an age or a birthday, and turning it on does not tell us one. An account in Kids mode is treated the way a child's account is in these terms: Kids mode keeps projects private: none can be made public or opened by link, and one that was public before is closed to everyone else; it is shown no prices, plans or offers; and it gets no product email. Kids mode is not consent and does not replace it: a child under 13 still needs a school's or a parent's consent, as above, to have an account. Kids mode cannot be turned off from inside the account. A parent or guardian can write to us to have it turned off or to have the account deleted.

2. Your account

You can use the editor with no account at all. An account lets you save projects, share them, join classes and pay for a plan. Keep the sign-in to your account to yourself and tell us right away if you think somebody else has it. What is done from your account is your responsibility until you tell us. One account is one person; a class is the way to give a group of people access.

3. Plans, payment and refunds

The Free plan is the whole simulator, with 10 saved projects, all public. The paid plans (Pro, the student plan and Classroom, and Ultra, Teacher and Pro for work for the accounts that still have them) are paid monthly or yearly, in advance, through Stripe. A paid plan renews at the end of each period until you cancel it. You can cancel any time from your account page or by asking us; you keep the paid features to the end of the period you paid for, which your account page names as a date, and there is no further charge. If a payment fails we do not switch anything off while the card is being retried, and we say so on your account page.

You can have one refund per account, ever. Ask within 14 days of a payment and we refund that payment in full; that includes Lifetime Pro, within 14 days of buying it. Once an account has had its one refund we make no further refunds to it, and we do not refund a payment more than 14 days old, except where the law where you live says we must. Two refunds are outside that rule and do not use up your one refund: the unused part of your period when a change we make takes away something you pay for, and a Mokxi AI pack that was cut short because your card's country has a higher price, which you can give back for the whole charge within 30 days of buying it. If we raise a price, we tell account holders on that plan by email at least 30 days before it applies to them.

The student plan is for people who can show they are a student, by a school email address or another check we offer. If a check fails or the eligibility ends, the plan moves to the ordinary Pro price at the next renewal, and we say so first. Classroom is priced per student, per year, billed yearly, for five students or more, by card or by a written quote and invoice; the teacher’s own seat is not charged for, and the number of students can be changed at any time from the account page, with the part of the period worked out by Stripe. The Teacher plan (one price for one teacher with twenty student seats included, not shared between teachers) and Pro for work are no longer sold; accounts that have them keep them on these terms until they end.

Invites: every account that is not in a class as a student has an invite link. When somebody signs up with your link, confirms their sign-in, saves a circuit to their account and comes back on a second day, you both get 7 days of Pro, for up to 5 friends per account and 2 a week. The days are added to any Pro time you already have from a trial or an invite; if you are on a paid plan they wait and start when it ends. One account is one person: accounts made to invite yourself do not count, and we can take back days earned that way. Invites are by link only; you never give us anyone else's contact details. We may change or end the invite program, and days already granted stay yours.

Referring your school: when a teacher or school account your link brings pays the first invoice of its Classroom seats (or of a Teacher plan it already had), you get a year of Pro. Nothing is earned before that invoice is paid: not a sign-up, a trial or a quote. There is no limit on how many schools you refer, and each paying account earns one reward. You cannot refer yourself: the referrer and the payer must be different people, with different accounts, email addresses and billing accounts. Students in a class and accounts of children under 13 take no part. If that first payment is refunded in full or disputed within 30 days, we take the reward back. The reward has no cash value. We may change or end the school referral program, and rewards already earned stay yours.

4. Your projects are yours

Everything you draw and write in Mokxi belongs to you. We store it so you can get it back, and we do not claim any rights over it. You may use it however you like, in paid work and in products you sell too, on every plan. So that we can run the service, you give us permission to keep copies, to show a project to the people you share it with, and to run it in their browsers. That permission ends when you delete the project, except for copies other people made while it was public.

Who can open a project depends on your plan. Every new project starts public, on every plan: anyone can find it in the gallery and on your profile page, and open, run and copy it. Making a project private (only you can open it) or link-only (anyone with its link, but not in the gallery or in search results) needs a paid plan, and the paid plans keep any number of them. A project that was already private or link-only stays that way on any plan: ending a paid plan or a trial never makes a project public, and you can still open, change, share and save it. The Free plan saves 10 projects, every one counted; an account that already has more keeps them all and can still open, change and save them. The paid plans save any number. Nothing is ever deleted because of a plan. Projects of a student in a class are always private, on every plan and at no cost: they cannot be opened by link or put in the gallery, and the student may keep any number of them. A child under 13 whose account we hold with consent, outside a class, starts every project private at no cost, and one they make public carries no name and is never in the gallery or on a profile page. Mokxi for VS Code is part of Pro and the plans above it, and running Mokxi CI (the GitHub Action, or the command line tool in a CI job) is free for public repositories and arranged with us for private ones; running a sketch on your own computer with the command line tool is free. If you used either in the 60 days before October 12, 2026, you keep it until December 11, 2026.

A project in the gallery can be opened, run, copied and changed by anyone on Mokxi, and that is the point of putting it there; a project open to anyone with the link can be opened, run and copied the same way by whoever has the link. A project you submit to a class can be seen by the teacher of that class. Private projects are seen by you, by the teacher of a class you submit one to, and by us only when we need to fix something or the law requires it.

The built-in projects, the lessons and the parts are ours. You may use them inside Mokxi freely, in your own work and in your classes, including screenshots and exports of circuits you build from them.

Our lesson plans are openly licensed. The printable lesson plan PDFs, the 12-week course, the curriculum packs and the teacher resource pages are licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license (CC BY-NC-SA 4.0): you may copy, adapt and share them for non-commercial teaching, with credit ("© Mokxi, licensed CC BY-NC-SA 4.0. Adapt and share for non-commercial teaching with credit.") and under the same license. That license covers those lesson plans only. It does not cover the Mokxi software, the site's design, the Mokxi name and logo, the teacher answer keys or anything else on mokxi.com, which these terms cover.

5. What you agree not to do

Attack, overload or probe the service, or get around a plan limit, a rate limit or an access check.
Go past fair use. A plan with no people limit on live rooms still holds up to 100 people in one room at a time, to keep every room working for everyone in it.
Put anything unlawful on Mokxi, or anything that infringes somebody else's rights.
Harass anyone, in a collaboration room, a class or a shared project.
Collect other people's information from Mokxi, or use it to send them anything.
Sell access to Mokxi or pass off any part of it as your own.

6. Schools and classes

A teacher who sets up a class is responsible for who joins it, for being allowed by their school to use Mokxi with their students, for the school having the permissions it needs from parents and guardians, and for what the class submits. A student's work in a class is visible to the teacher of that class. When a class is closed, its roster and submissions are deleted, and each student keeps their own projects in their own account. We sign school and district student data privacy agreements; where a school has one with us, it governs the school's student data and wins over these terms where the two differ. How we handle student data is set out at /privacy/students.

7. It is a simulation

Mokxi is a simulator, and it is not a substitute for building the circuit. It will get some things wrong, and a circuit that works here can still fail, overheat or damage a part on the bench. Check your work, especially anything you connect to wall power, a battery of any size, a motor or another person, before you power it. Do not rely on Mokxi for anything where a mistake could hurt someone.

8. Our software

The simulator, the CPU cores, the parts, the boards, the site and the Worker are ours, and we wrote them. You get a license to use them through Mokxi. The parts that run in your browser are there to be run; you may not copy them into another product, remove our notices, or build a competing simulator from them. Mokxi and the Mokxi mark are ours to use.

9. Trademarks

10. Changes and availability

We change Mokxi all the time and we will keep doing so. We can add, change or remove features, and we can stop offering a plan. If a change takes away something you pay for, we tell you first and you can cancel with a refund of the unused part of your period. We aim to keep Mokxi up, but we do not promise it, and it will sometimes be down for maintenance or for reasons outside our control. You can export any project as a file at any time.

11. Ending things

You can close your account whenever you like from your account page; that deletes your projects and your data as the privacy notice describes. We can suspend or close an account that breaks these terms, that attacks the service or that hosts something unlawful, and we will say why unless the law stops us. Sections 4, 7, 8, 11 and 12 keep applying afterwards.

12. No warranty, limited liability

Mokxi is provided as it is and as available, with no warranty of any kind, whether written, implied or from how it is used, including any warranty that it is accurate, fit for a purpose, or free of faults. To the extent the law allows, we are not liable for any indirect, incidental or consequential loss, for lost data, lost profit or lost time, or for anything you build from a simulation. Our total liability to you for anything to do with Mokxi is limited to the amount you paid us in the twelve months before the claim, or fifty US dollars if you paid nothing. Some places do not allow some of these limits, and where that is so they apply only as far as the law allows.

13. The law that applies

These terms are governed by the laws of the State of Colorado, United States, without regard to its conflict of law rules, and any dispute goes to the state or federal courts in Colorado. Either side can also bring a claim in a small claims court that has jurisdiction. If you live in a place whose consumer law gives you more than this, that law still applies to you.

14. Changes to these terms

When we change these terms we change the date at the top. For a change that matters to you, we tell account holders by email at least 14 days before it applies. Using Mokxi after that is agreeing to the new terms.

15. Contact

Questions about any of this go to the support page at /support, by email to support@mokxi.com, or by phone on (719) 246-1726. A person answers.

By post:

Mokxi LLC
5142 N Academy Blvd PMB 1021
Colorado Springs, CO 80918
United States

Terms of service