Legal

Terms of service

Effective: 12 October 2026 Provider: Coy Koi Limited (company number 17424259), 71-75 Shelton Street, Covent Garden, London, United Kingdom, WC2H 9JQ, [email protected]

These are the rules for using CoyKoi: the desktop app, the mobile app, the web app, the account site and the cloud service behind them. Using any of them means you accept these terms. If you are buying something, Paddle’s checkout terms apply to the payment as well; these terms govern the product.

1. What CoyKoi is

CoyKoi is a tool for rigging and animating 2D characters, sharing the results with other people, and running them live. CoyKoi for iPhone is free. The desktop apps (Stream, Prop and Studio, section 6) need an account and a trial, a purchase or a plan. Cloud saves, sending and receiving runtimes, motion-capture libraries and sync between machines need an account.

2. Your account

  • You need to be at least 13 (or the age your country sets for agreeing to terms like these). If you are under 18, a parent or guardian needs to be fine with this.
  • One account per person. You are responsible for what happens under it: keep the password to yourself, turn on two-factor authentication if you want, and revoke devices you no longer use from the account page.
  • Your account, and anything bought on it, is yours alone: you may not sell, rent, give away or otherwise transfer the account or a licence on it to someone else.
  • Your handle is public. Do not pick one that impersonates someone else or a brand you do not own; we may rename or reclaim handles that do.
  • We may suspend or close an account that breaks these terms (section 8 says how).
  • We delete a free account (one with no purchase and no active plan) that nobody has signed in to or used from an app for 24 months, together with its cloud projects and files. We email you 90, 60 and 30 days before; signing in once keeps the account. Accounts with a purchase, an active plan or a business seat, and owners of a business account, are never deleted for being unused.

3. Your content

It stays yours. Everything you make with CoyKoi — models, rigs, motion data, streams — belongs to you or whoever you have arrangements with. We claim nothing.

Use it commercially. You may use CoyKoi and everything you make with it for commercial work (selling commissions, monetised streams, paid models) with no royalty, no revenue cap and no separate publishing licence.

What you let us do with it is only what is needed to run the service: store it, copy it between servers and backups, deliver it to the people you choose, and check its type. We do not train anything on it or show it to anyone you did not send it to, and we only look at it when it is reported to us under section 8 or the law requires it. The app’s own features that learn from your work (a rig’s model, lighting depth) run on your computer, only for that work, and send nothing to us.

What you promise about it: you have the right to upload it. That means you own it, or the person who does has allowed it. Uploading a model you commissioned is fine; uploading a model you found is not.

When you delete it, it is gone from our storage after a short grace period, unless someone you delivered it to still holds their copy — see section 5.

Suggestions. If you send us ideas or feedback about CoyKoi, we may use them freely without paying or crediting you. This covers suggestions only, not your content, which stays yours.

4. Riggers and streamers

CoyKoi connects people who make characters with people who use them. We are not a party to that arrangement. Payment for the rigging work, ownership of the character, and what the streamer may do with it are between the two of you; CoyKoi only moves the file and records who sent what to whom.

Two things follow from that:

  • A preview can expire or be revoked by the rigger. That is what a preview is for — it is leverage before payment. Do not build a stream on a preview.
  • A final cannot be revoked by the rigger. Once a final is delivered and accepted, it is the recipient’s to keep, for as long as they hold their copy, regardless of any later dispute. If you are a rigger, do not send a final until you are satisfied with the terms of the job.

Every delivered file carries the handles of the sender and the recipient inside it. If a file turns up somewhere it should not be, that is how it is traced.

5. Shared files and storage

  • A file counts against the storage of everyone who holds it, at its full size, however many people that is. Deleting your copy frees your storage and does not affect anyone else’s.
  • A “transfer” delivery moves the file to the recipient’s storage when they accept it; the sender’s copy is released at that moment unless the sender still uses the same parts in their own projects.
  • Over your storage limit, you cannot add more until you are under it. We do not delete your files to make room, and we do not delete them when a paid plan ends.
  • We keep old versions of cloud projects on a thinning schedule (all for 30 days, then daily, then weekly for a year), except versions you label or pin. Local files are never touched by any of this.

6. Paying

What we sell. Three desktop editions, each including everything in the one before it:

  • Stream: streaming your characters from your computer. One payment, yours to keep.
  • Prop: Stream, plus importing artwork and key-based rigging. A plan, monthly or yearly.
  • Studio: Prop, plus full rigging. A plan, monthly or yearly.

A Prop or Studio plan includes Stream for as long as the plan is active. When the plan ends, desktop streaming stops too, unless you have also bought Stream. Each purchase or plan works on up to 3 machines at a time; you can deactivate a machine to free a slot.

Free, and storage. CoyKoi for iPhone is free, streaming included, and every account has 5 GB of cloud storage. Prop includes 25 GB and Studio 100 GB while the plan is active. More storage is a separate add-on, monthly or yearly.

Trials. You can try each desktop edition free for 14 days, once per account. A trial costs nothing and needs no payment details. When it ends, the edition stops until you buy it or start a plan; nothing is charged unless you choose to.

Who pays what. Prices depend on who pays, never on what you earn:

  • Student: for students in education who verify it with us.
  • Indie: you pay with your own money, or through a company in which you are the only person working.
  • Small studio: a company of up to five people (counting everyone who works for it, you included) pays, or pays you back.
  • Business: any other company or organisation pays, or pays you back.

Small studio and business prices are per seat, one seat for each person who uses it. You choose your tier at checkout and we do not ask for financial information. If your situation changes (a studio grows past five people, or a company starts paying for an indie plan), move to the right tier at your next renewal. We may ask you which tier applies and, if it is not the one you are on, move you at your next renewal.

Business accounts. Small studios and businesses buy through a business account, which holds their plans and seats; the business owns them, not the person who paid. Whoever sets up the business account accepts these terms for the business and confirms they may. Its owner and admins invite people, assign them seats and take seats back; a seat can change hands once every 30 days, and a seat taken back stops working within a week on a machine that stays offline. The business is responsible for how the people it assigns seats to use CoyKoi. Leaving a business account, or being removed from one, ends your seat and nothing else: your own account, purchases and files stay yours.

Renewing and cancelling. Plans and add-ons renew automatically at the end of each month or year until you cancel. Cancel any time through the link in any Paddle receipt, or by emailing [email protected]; the plan stays active until the end of the period you have paid for.

  • Prices are shown at checkout in your currency including any tax Paddle is required to charge.

  • Price changes. We can change our prices. A new price applies to purchases made after the change. For a plan or add-on you already have:

    • we email you at least 30 days before you are first charged the new price, saying what it is and when it starts;
    • it starts at your first renewal after that notice, never partway through a period you have paid for;
    • you can cancel before then and you will not be charged the new price. Cancel through the link in any Paddle receipt, or by emailing [email protected].

    Stream, once bought, is never charged again, whatever happens to the price. If a tax rate changes, the tax part of your price changes with it.

  • Refunds are described in the refund policy. It is part of these terms.

Paddle is the seller of record: they charge you, issue the receipt, handle tax, and appear on your statement.

7. Licences and the offline check

The software is licensed, not sold. CoyKoi’s apps and service belong to Coy Koi Limited. We give you a non-exclusive, non-transferable right to install and use them under these terms, including for commercial work; buying Stream or a plan extends that right, it does not transfer ownership. Do not decompile, reverse engineer or modify the apps, except where the law lets you regardless of these terms.

NDI®. The desktop app can send its stage over NDI®, using a runtime from Vizrt NDI AB that ships with it. For that runtime: do not modify, reverse engineer, disassemble or recompile it or the protocols it uses, whether sent over a network or used on your machine, or try to; do not get around its technical limits; and do not remove, hide or alter its copyright notices or labels. Use it only in line with United States export control laws and regulations. Vizrt NDI AB and its licensors give no warranty of any kind for it and, to the extent the law allows, are not liable for any damages, direct, indirect, incidental or consequential, arising from its use. The NDI runtime is copyright Vizrt NDI AB, all rights reserved. NDI® is a registered trademark of Vizrt NDI AB (https://ndi.video/).

Updates. The desktop app checks for updates and offers to install them. An update can change features or system requirements, and older versions may stop working with the cloud service.

The offline check. The apps check your entitlements with a signed token that stays valid for a few weeks without contacting us, so an outage on our side costs you a login, not a session. If you have not been online for longer than that, the app needs to reach us once before paid features work again. Tampering with the token, the licence check, or any watermark is a breach of these terms and ends your licence.

8. Things you may not do

  • Threaten, harass, bully or stalk anyone, publish someone’s private details (doxxing), or encourage others to do any of that.
  • Promote or incite violence or terrorism, or hatred against people for who they are: race, ethnicity, nationality, religion, sex, gender identity, sexual orientation, disability or age.
  • Make, share or link to sexual content involving anyone under 18, or sexual content of a real person without their consent.
  • Impersonate a person or brand, or use CoyKoi to scam or defraud anyone.
  • Make or distribute anything else that is illegal where you or the recipient are.
  • Upload anything you do not have the right to, or that contains malware.
  • Attempt to access another person’s account or files, probe or overload the service, or bypass rate limits, licence checks or watermarks.
  • Redistribute a delivered runtime you received, unless the rigger has agreed. Receiving a final gives you the right to use it, not to pass it on.
  • Resell or sublicense CoyKoi itself.

What we do about it. If you break these terms, or we reasonably believe you have, we may, depending on how serious it is:

  • remove or disable content we host, including public links and shared sets;
  • limit features such as sharing, deliveries or the directory listing;
  • suspend your account, or close it permanently;
  • report it to the police or other authorities where the law requires it or someone is at risk, and keep what they need for that.

We usually warn you first and say why. For serious cases (threats, violence, sexual content involving minors, attacks on the service) we act straight away without notice. If we close your account for breaking these terms, you lose its cloud storage, purchases and plans and we do not refund them; where the breach is not serious we give you time to download your files first.

Reporting and appeals. To report content or an account, or if you think we got a decision about yours wrong, email [email protected]. A person reads every report and every appeal.

9. Availability

We run CoyKoi on a small number of providers and do our best to keep it up, but we do not promise uninterrupted service, and we can change or retire features. Where a change removes something you paid for, we refund the unused portion. The local apps keep working through any outage; the cloud parts do not.

10. Warranty and liability

What you pay for will match its description and work with reasonable skill and care, as consumer law requires. If it does not, tell us and we will fix it, replace it or refund you. Beyond that, we do not promise CoyKoi is free of bugs or that a stream will never go wrong. To the extent the law allows:

  • We are not liable for lost income, lost content you did not keep a copy of, or anything indirect.
  • Our total liability to you for anything arising from CoyKoi is limited to what you paid us in the twelve months before the claim.

Nothing here limits liability that cannot be limited by law — for example, for death or personal injury caused by negligence, or fraud — and nothing here removes rights that consumer law in your country gives you.

11. Changes to these terms

We may update these terms. For material changes we email account holders at least 30 days before they take effect. Continuing to use CoyKoi after that date means you accept the new terms; if you do not, close your account before then and section 6’s refund rules apply to anything prepaid.

12. Law and disputes

These terms are governed by the law of England and Wales, and its courts have jurisdiction, except that if you are a consumer you keep the protection of the mandatory law of the country you live in and may bring a claim there. Before anything formal, email us; most problems are a misunderstanding and are fixed in a day.

13. General

  • These terms, the privacy policy and the refund policy are the whole agreement between you and us about CoyKoi.
  • If a court finds part of these terms invalid, the rest still applies.

14. Contact

Coy Koi Limited
Registered in England and Wales, company number 17424259
71-75 Shelton Street, Covent Garden, London, United Kingdom, WC2H 9JQ
[email protected]