Terms of Service

The contract between you and Kaizendex — your account, your subscription, and who is responsible for what.

Version 1.0 · Effective 14 August 2026

These terms are written in plain English on purpose. Plain words are still binding.

1. Who you are contracting with

Kaizendex is operated by Danielius Korsakas, a sole trader registered in the Republic of Lithuania under registration number 977976 ("Kaizendex", "we", "us", "our").

You can reach us at trackguilds@gmail.com for anything at all — support, billing, privacy requests, abuse reports and copyright notices all go to the same inbox.

These terms are a contract between you and us. You accept them by creating an account or by using Kaizendex. If you do not accept them, do not use the service.

Two other documents form part of this contract:

The Privacy Policy, which explains what we do with your data.
The Publishing Rules, which apply if you publish anything to the Kaizendex Library.

2. Who may use Kaizendex

To hold an account you must:

be at least 16 years old;
be able to enter into a binding contract where you live;
not be barred from using the service under any applicable sanctions or law; and
give accurate registration details and keep them current.

One person, one account, unless we agree otherwise in writing. If you open an account for an organisation, you confirm you are authorised to accept these terms on its behalf.

You are responsible for everything that happens under your account. Keep your password to yourself, and tell us at trackguilds@gmail.com as soon as you think someone else has access.

3. What Kaizendex is — and what it is not

Kaizendex is a personal tracking app. You define what you want to track, log entries against it, build dashboards over the result, and can ask an AI agent to read and write that data on your instruction. You can optionally connect outside services, such as Google Health, so that data flows in automatically.

Kaizendex is not:

a medical device, a doctor, or a source of medical advice — see section 7;
a source of financial, legal, nutritional, or other professional advice;
your only copy of your data. It is a working system, not an archive. Keep your own copies; we will always help you export (section 10);
a guaranteed, always-available service. It is early software under active development (section 10).

4. Your content, and what you allow us to do with it

You own what you create. Your collections, entries, notes, dashboards, themes, agents, files and photos remain yours. We claim no ownership of them.

To actually run the service we need your permission to handle that content. You grant us a worldwide, non-exclusive, royalty-free licence to host, store, copy, transmit, adapt for display, and process your content for the sole purpose of providing Kaizendex to you — running the features you use, backing it up, syncing it between your devices, and passing it to the service providers listed in our Sub-processors page. That licence ends when you delete the content or your account, except for backup copies on their ordinary overwrite cycle and anything the law requires us to keep.

To be explicit about what that licence is not for:

We do not use your content to train AI models — ours or anyone else's.
We do not sell your content or your personal data.
We do not use your content to target advertising.
We do not read your entries as a matter of course. See the Privacy Policy for the narrow exceptions.

You are responsible for your content. You confirm that you have the right to store and process everything you put into Kaizendex, that it is lawful where you are, and that it does not infringe anyone else's rights. That includes any personal data about other people that you choose to record.

5. The AI agent

Kaizendex includes an AI agent that can read your data and, on your instruction, write to it through a closed set of audited and reversible operations. Using it means your content is sent to the AI providers named in the Sub-processors page, which is why that page exists and is kept current.

Three things you must accept before relying on it:

Its output can be wrong. Large language models state incorrect things confidently, including about your own data. Check anything that matters before acting on it.
You remain the decision-maker. The agent is a tool you direct. Decisions you take after reading its output are yours, and we are not liable for them (section 13).
It runs on an allowance. Paid plans include a stated number of agent messages per period. Running out never breaks the rest of the app. We may adjust allowances with notice, and may apply reasonable rate limits to protect the service.

You must not use the agent to generate unlawful content, to attack or overload the service, to extract our prompts or models, or to build a competing product.

6. Publishing to the Kaizendex Library

Publishing is entirely optional. If you publish, the Publishing Rules apply in full, and the following terms govern the arrangement.

What publishing does. It takes a snapshot of a structure you built — a collection's shape, a dashboard, a view, an agent, a theme — and lists it publicly. Later edits to your own copy do not change what is published. Publishing exports structure, not your entries.

The licence you grant other users. When you publish an item, you grant every other Kaizendex user a worldwide, non-exclusive, royalty-free licence to copy, use, modify and adapt that item inside Kaizendex. That licence is irrevocable for copies already made: unpublishing removes your listing, but it cannot claw back the copies now sitting in other people's accounts, and those copies are theirs. You keep ownership of the original.

The licence you grant us. For anything you publish, you also grant us a licence to store, display, reproduce, index, translate and promote it in and around Kaizendex, including in marketing material, for as long as it is published.

Your display name is shown next to anything you publish.

We do not pre-screen. We are not obliged to review, monitor or moderate published content, and we do not do so before publication. We may remove, restrict, unlist or edit any published item at any time, with or without notice, for any reason or no reason. This is a right we reserve, not a duty we accept, and choosing to remove one thing does not oblige us to remove another.

You are solely responsible for what you publish, including any claim brought by anyone about it (section 14).

7. Health, fitness and wellbeing

This section matters more than its length suggests.

Kaizendex is not a medical device within the meaning of Regulation (EU) 2017/745, and is not certified, registered or intended as one. It does not diagnose, treat, cure, prevent or monitor any disease or condition.

Nothing in the app — no number, chart, streak, trend, insight, or anything the AI agent says — is medical advice, and none of it should be used to decide whether to start, stop or change any medication, treatment, diet, fast, training programme or therapy. Talk to a qualified professional before doing any of that.

Data arriving from connected services such as Google Health or Fitbit is presented as those services provide it. It can be delayed, incomplete, or simply wrong, and we do not verify it.

In an emergency, call your local emergency number. Do not use Kaizendex.

8. Acceptable use

You must not:

break the law, or use Kaizendex to help anyone else break it;
infringe anyone's intellectual property, privacy or other rights;
upload malware, or anything designed to damage or gain unauthorised access to any system;
probe, scan, or test the security of the service; bypass authentication, rate limits, allowances or usage caps; or access any account, data or area you are not authorised to reach;
scrape, bulk-download or systematically harvest other users' content;
place a load on the service that is unreasonable, automated, or disproportionate to normal personal use;
resell, sublicense, rent or white-label the service without our written agreement;
reverse engineer, decompile or disassemble any part of the service, except to the extent the law explicitly permits despite this restriction;
use the service to build or train a competing product or model; or
impersonate anyone, or misrepresent your affiliation with any person or organisation.

If you breach this section we may suspend or terminate your account immediately (section 11).

9. Plans, payments, trials and refunds

Plans. Kaizendex has a free plan and a paid Pro plan. Current prices and what each plan includes are shown on our website before you buy. Prices are stated in euro and include VAT where it applies.

Billing and renewal. Paid plans are billed in advance for the period you choose — monthly or yearly — and renew automatically at the then-current price until you cancel. You can cancel at any time from your account settings; cancellation stops the next renewal and you keep Pro access until the end of the period you have already paid for.

Who takes the money. Card payments on the web are processed by our payment processor; we never receive or store your full card details. If you subscribe through the Apple App Store or Google Play, that store is the seller of record for the transaction, its terms also apply, and refunds for those purchases must be requested through the store, not from us.

Trials. Where we offer a free trial, it converts into a paid subscription at the end of the trial period unless you cancel before then. We will tell you the terms clearly before the trial starts.

Price changes. We may change prices. We will give you at least 30 days' notice before a change affects your renewal. If you do not accept the new price, cancel before it takes effect.

Your 14-day right of withdrawal. If you are a consumer in the EU you have 14 days from entering into the contract to withdraw from it, without giving a reason. Email trackguilds@gmail.com and say you are withdrawing. Because a subscription starts immediately, by subscribing you ask us to begin performance during the withdrawal period; if you then withdraw, you pay a proportionate amount for the part of the period you had access to, and we refund the rest. We aim to refund within 14 days of being told.

Other refunds. Outside that right, payments are non-refundable, including for partial periods and for periods where you did not use the service. We may make exceptions at our discretion. None of this affects your mandatory statutory rights as a consumer, including your rights where the service is not as described.

Failed payments. If a payment fails we may retry it, and may suspend paid features until it clears. Your data is not deleted because of a failed payment — it follows the retention rules in the Privacy Policy.

Taxes. Prices include EU VAT where applicable. Any other tax arising from your use of the service is yours.

10. Availability, changes, and export

Kaizendex is early software and is developed continuously. We may add, change, or remove features, and we may change how a feature works. Where a change is both material and clearly adverse to you as a paying subscriber, we will give reasonable notice.

We do not promise any particular uptime. The service may be unavailable for maintenance, updates, provider outages, or reasons outside our control.

Export. Your data is yours to take. Email trackguilds@gmail.com and we will provide a machine-readable copy of your account within 30 days, at no charge. Our command-line tool, kzx, can also project your account into plain files on your own disk.

If we ever shut the service down, we will give you at least 30 days' notice and a way to export everything before it goes.

11. Suspension, termination and deletion

You can stop at any time. Cancel your subscription in settings, or delete your account outright. Account deletion is scheduled with a short grace period during which you can cancel it by signing back in; after that it proceeds as described in the Privacy Policy.

We may suspend or terminate your account, or remove content, if:

you breach these terms, the Publishing Rules, or the law;
we are required to by law, a court, or a competent authority;
your use presents a security, legal or financial risk to us, to other users, or to a third party;
your payment fails and stays unpaid; or
the account has been inactive for a long period and we have given you notice.

We will give you notice where it is practical to do so, and act immediately without notice where the issue is serious — illegal content, a security threat, or an active risk of harm.

On termination, your right to use the service ends, published items are unpublished, and the licences you granted us end except as stated in section 4 and section 6. Copies of published items already made by other users remain theirs. Termination for breach does not entitle you to a refund.

12. Disclaimers

To the fullest extent permitted by law, Kaizendex is provided "as is" and "as available", and we give no warranties, conditions or representations of any kind, whether express, implied or statutory — including any implied warranty of satisfactory quality, fitness for a particular purpose, accuracy, or non-infringement.

In particular, we do not warrant that:

the service will be uninterrupted, timely, secure or error-free;
any result, calculation, chart, insight or AI output is accurate, complete or suitable for any purpose;
data received from connected third-party services is accurate or complete;
content published by other users is lawful, accurate, safe or suitable; or
data will never be lost or corrupted — keep your own copies.

Nothing in this section removes rights you have as a consumer under Lithuanian or EU law that cannot lawfully be excluded, including the statutory conformity rules for digital content and digital services.

13. Limitation of liability

In plain words: the most you can recover from us is what you have actually paid us.

To the fullest extent permitted by law:

Our total aggregate liability to you for all claims connected with Kaizendex, whether in contract, tort (including negligence), or otherwise, is limited to the greater of (a) the total amount you paid us in the 12 months before the event giving rise to the claim, and (b) €50.
We are not liable for any of the following, however caused: indirect, incidental, special or consequential loss; loss of profit, revenue, business, goodwill, anticipated savings or opportunity; loss, corruption or inaccuracy of data; the cost of substitute services.
We are specifically not liable for: decisions you make based on anything the app or the AI agent shows you; any health, fitness, dietary, training, medical or financial outcome; content published or shared by other users; the acts, omissions, accuracy or availability of third-party services and providers; or events outside our reasonable control.
Nothing in these terms excludes or limits our liability for death or personal injury caused by our negligence, for fraud or fraudulent misrepresentation, or for anything else that cannot lawfully be excluded or limited.
If any part of this section is held unenforceable, the remaining parts continue to apply.

If you are a consumer, this section applies only so far as the law where you live allows, and your mandatory statutory rights are unaffected.

14. Your responsibility to us

To the fullest extent permitted by law, you will defend, indemnify and hold us harmless against any claim, demand, proceeding, loss, liability, damage, cost or expense (including reasonable legal fees) arising out of or connected with:

your content, or anything you publish;
your use of the service;
your breach of these terms, the Publishing Rules, or the law; or
your infringement of anyone else's rights.

We will tell you promptly about any such claim. You may take over the defence with our prior written agreement, which we will not unreasonably withhold, and we may participate with our own counsel at our expense. If you are a consumer, this section applies only so far as the law where you live allows.

15. Third-party services

Kaizendex can connect to services run by other companies — Google Health, Fitbit, Google sign-in, and others. Those connections are made at your request, using your credentials, and are governed by those companies' own terms and privacy policies. We are not responsible for them, for what they do with data you authorise them to share, or for their availability. You can disconnect any of them from your settings at any time.

Links and embedded content from elsewhere on the internet are shown for convenience; we do not endorse and are not responsible for them.

16. Changes to these terms

We may update these terms. Every version carries a version number and effective date at the top of this page.

For material changes, we will give at least 15 days' notice by email or in the app before they take effect. Continuing to use Kaizendex after the effective date means you accept the new terms. If you do not accept them, stop using the service and delete your account; if a material change is clearly adverse to you and you have prepaid, contact us and we will refund the unused part of your period.

Minor changes — typographical fixes, clarifications that do not alter your rights — take effect when published.

17. Governing law and disputes

These terms, and any dispute arising out of them or out of your use of Kaizendex, are governed by the law of the Republic of Lithuania, and the courts of Lithuania have jurisdiction.

If you are a consumer, that choice does not deprive you of the protection of the mandatory rules of the country where you live, and you may bring proceedings in the courts of your own country.

Please contact us at trackguilds@gmail.com first — almost everything is faster to fix that way. Consumers in Lithuania may also contact the State Consumer Rights Protection Authority (Valstybinė vartotojų teisių apsaugos tarnyba); consumers elsewhere in the EU may contact their national consumer authority.

18. General

Entire agreement. These terms, the Privacy Policy and the Publishing Rules are the whole agreement between us about Kaizendex.
Severability. If a provision is held invalid or unenforceable, it is modified to the minimum extent needed to be enforceable, or removed, and the rest stands.
No waiver. If we do not enforce something straight away, we have not given up the right to enforce it later.
Assignment. We may transfer these terms to a successor as part of a transfer of the business, on notice to you. You may not transfer your account or these terms without our written agreement.
No third-party rights. Nobody other than you and us can enforce these terms.
Force majeure. Neither of us is liable for failure to perform caused by events beyond reasonable control.
Notices. We contact you at the email on your account; you contact us at trackguilds@gmail.com.
Language. These terms are written in English, and the English text governs.

19. Contact

Danielius Korsakas, trading as Kaizendex — a sole trader registered in the Republic of Lithuania, registration number 977976.

Email: trackguilds@gmail.com