Terms of service

Kaiku is operated by PE Stanislav Vorobev. Where these terms say “we”, that is who is meant, and that is the party the agreement is with.

Write to hello@kaiku.tech about anything in this document.

Kaiku is a hosted task tracker with a wiki. Each customer gets a workspace on its own subdomain of kaiku.tech, with its own projects, users and data. The Kaiku apps for iOS and Android open the same workspaces and are covered by these terms.

The service exposes an API designed to be wire-compatible with the REST API of a widely used third-party tracker and its wiki, so that tools written for those work against Kaiku. We are not affiliated with, endorsed by, or connected to that vendor, and we name no product here. Compatibility is a goal we work at, not a warranty that any particular third-party tool will behave; where a tool depends on undocumented behaviour, we cannot promise it.

A new workspace runs free for 30 days, limited to 2 users, 1 project and 1 GB of attachments. No payment method is required to start, and none is taken automatically when the trial ends.

The paid plan costs $7 per user per month and includes up to 100 projects, 20,000 issues and wiki pages counted together across the workspace, and 20 GB of attachments.

Beyond the included amount, each further 20,000 issues and pages costs $20 per month, and each further 100 GB of attachments costs $10 per month. Those charges are per workspace, not per user.

There are two ways to pay. By card, as a subscription that renews every month or every year until you cancel it. Or in USDT or USDC, each period paid in advance, with no standing order and no stored payment method: a crypto payment is never taken without an action by you.

If a crypto payment arrives for less than the invoiced amount — which happens with network fees and exchange-rate movement — the shortfall is held as a balance on the workspace and the period is not extended until the invoice is covered. An overpayment is held the same way and applied to the next period.

Changing the number of users mid-period is prorated against the remainder of that period.

Card orders are processed by our online reseller Paddle.com. Paddle is the Merchant of Record for those orders: it takes the payment, charges and remits the sales tax or VAT that applies where you are, issues the receipt, and handles questions about the payment and returns. Your card details go to Paddle and never reach us. Paddle’s buyer terms, paddle.com/legal/checkout-buyer-terms, apply to the purchase as well.

A card subscription renews automatically at the end of each period, for the number of users it covers, until it is cancelled. You can cancel at any time from your workspace’s billing screen («Card, receipts and cancelling») or from the link in Paddle’s receipt. Cancelling stops the next charge; the workspace keeps working to the end of the period already paid for.

A card payment is refunded in full if you ask within 14 days of the charge — the first payment and every renewal alike, and no reason is needed. Write to hello@kaiku.tech, or ask Paddle at paddle.net or through the link in your receipt. The money goes back to the card it came from.

A refund ends the period that payment paid for on the day it is made. The workspace then becomes read-only, as when a subscription lapses, and nothing is deleted.

After 14 days a card payment is not refunded, but you can cancel at any time, and the next charge is then never taken.

Crypto payments are not paid back as money: a transfer on a blockchain cannot be reversed, and sending coins back would cost network fees twice. An overpayment, and the unused part of a period when you move to fewer users, become a balance on the workspace and are spent on your next invoice rather than kept by us. If you stop using Kaiku while a balance is on the workspace, it stays there and is available if you return.

A purchase made in the App Store or Google Play is refunded by Apple or Google under their own rules; ask through the store.

Where the law of your country gives you more than this — a right to withdraw from the purchase, for example — that right applies, and nothing here takes it away.

Exceeding the included issues and pages does not switch anything off that day. You have 7 days to pay for the additional amount, and the workspace keeps working normally throughout.

We treat this differently from non-payment on purpose. Not paying is a decision; going over is usually something you did not notice — an import, or an automation that filed a few hundred issues overnight. If the 7 days pass without payment, the workspace becomes read-only under the section below, and nothing is deleted.

A period that ends without payment moves the workspace to read-only after a short grace period. Nothing is deleted. Everything remains readable, and project export keeps working, so you can take your data with you at any time.

A read-only workspace is kept for 12 months. After that it is deleted, together with its attachments and its export archives. We write to the workspace owner before that happens, and not only once.

The content you put into a workspace is yours. We do not sell it, and we do not use it to train models.

Some features send content to third parties in order to work: translation, AI assistance, and the English summaries that let search find an issue written in another language. The privacy policy names each of them and where the content goes.

We may access a workspace to operate the service or to answer a support request. Where an administrator views a workspace as one of its users, that access is read-only and recorded where the customer can see it.

We work to keep the service running and we back it up, but we do not offer an uptime guarantee, and our liability is limited to the fees paid for the period in which a problem occurred. This is a low-cost hosted service, not an insurance policy — keep your own copy of anything you cannot afford to lose. Export exists for exactly that.

A workspace owner can recommend Kaiku with the workspace’s partner link and receive 20% of what the companies it brings pay net in their first 12 months, as credit on the workspace’s balance. The programme’s terms are on its own page, kaiku.tech/en/partners, and form part of this agreement.

That credit is a balance like any other under the refunds section: it is spent on the workspace’s own periods and is never paid out as money.

You can stop at any time — cancel a card subscription, or do not pay for the next crypto period; the section above then applies. You can ask us to delete a workspace sooner, and we will.

We can end the agreement for non-payment, or for use that harms the service or other customers. Write to hello@kaiku.tech with anything about these terms.