These terms govern subscriptions to the tokumai app, offered by Hermes Blockchain Ventures — Matthias Winter (sole proprietorship / Einzelunternehmen) ("we"). By subscribing you accept them. Version 21 September 2026.
A plan — monthly or yearly — for the tokumai app. A plan grants an allowance of TOKU for every calendar month. TOKU is spent on requests to third-party AI models (text and image generation) routed through the Nym mixnet. TOKU is a usage allowance, not money, not a cryptocurrency, not transferable and not redeemable for cash.
We also issue promotional and invitation codes. A code adds TOKU to your account; that credit is not part of a plan and does not lapse with the month.
Prices are in EUR. We are a small business under § 19 UStG (German VAT Act): no VAT is charged or shown. Every model shows its price per request or per 1,000 tokens inside the app before you send.
Yearly plans cost about 10 % less than twelve monthly payments and are paid once a year — the exact price is shown before you subscribe; the allowance is still granted month by month. Payment on the web: card, PayPal, Apple Pay or Google Pay via Stripe (the methods Stripe offers at its checkout). On iPhone a plan is bought through the App Store, at the price the App Store shows for your country.
The allowance belongs to the calendar month. On the 1st of each month a paid plan is set to its full allowance; what is left of the previous month does not roll over.
The first month. On the web, a plan that starts mid-month is charged and granted pro rata, to the day. Through the App Store, Apple charges the full price from the day you subscribe, and you receive a full allowance at once.
Changing plans. An upgrade takes effect at once and is charged and granted pro rata; a downgrade takes effect at the end of the period already paid for.
Delivery. The allowance is available as soon as the payment is confirmed — usually seconds; the app collects it automatically. There is nothing to ship.
A plan renews until you cancel it. A monthly plan can be cancelled at any time to the end of the current month; a cancellation that reaches us on the last day of the month — in any time zone — ends the plan with that month. A yearly plan runs for twelve months and then continues month by month, cancellable to the end of any month.
How to cancel. Web: with the button at tokumai.com/cancel — no sign-in, only the e-mail address you gave at the checkout; the page gives you a confirmation to save. You may equally write to us at the address below, and we confirm by e-mail. iPhone: in your Apple ID settings under Subscriptions; we cannot cancel an App Store subscription for you.
After a plan has ended, the allowance already granted stays usable until the end of that calendar month; nothing new is granted on the 1st.
A plan is a contract for a digital service that begins the moment your payment is confirmed. Before you subscribe on the web, we ask you to confirm two things separately: that you want the service to begin at once, and that you know you thereby lose your right of withdrawal once the service has been provided in full (§ 356 (4), (5) BGB / Art. 16 (a), (m) Consumer Rights Directive). Without both confirmations no order can be placed. If you withdraw before that point, you owe a proportionate amount for the allowance already used. For a plan bought through the App Store, Apple is the seller of record: withdrawal, cancellation and refunds of the payment follow Apple's terms.
We keep the same facts in our own sales record: date, receipt number, amount, country, payment method, and which version of these confirmations you agreed to. It holds no account, and nothing about what the allowance was used for. If you lose your receipt, write to us quoting the card payment or the transfer memo instead — we can find the purchase from either.
Your statutory rights for digital products (§§ 327 ff. BGB) are unaffected by the paragraph above and cannot be signed away. In particular: if a payment was confirmed and the allowance did not arrive, we will grant it. Contact us with the receipt number or the invoice memo. The same applies if the service does not work as described.
Beyond that we may refund a purchase at our discretion — write to us and say what happened. This is goodwill, not a claim you can rely on: TOKU is spent as bearer tokens that cannot be traced back to a payment, so we cannot tell how much of an allowance is still unspent.
There is no user account in the usual sense: your access is a 24-word recovery phrase generated on your device. We do not know it and cannot restore it. Whoever holds the phrase holds the credit. Keep it safe.
What we keep about a plan. A plan has to stay linked to the account it belongs to — otherwise it could not renew. For as long as it runs we hold, per account: the plan level, the reference of the subscription at Stripe or of Apple's transaction, the end of the period that has been paid for, and the month's allowance. For a code, the link between the code and the account that redeemed it is deleted after seven days. Payment records (amount, date, payment method, country) are kept for bookkeeping. None of this touches your prompts: they are paid with blind-signed coins that carry no identifier, so nothing on our side connects an account to what was asked.
Plans in the iPhone app. On iPhone, a plan is bought through the App Store. Apple is the seller of record for that payment and its price is set in the App Store; Apple's terms, cancellation and refund rules apply to it. The allowance itself is granted by us the moment Apple's transaction is verified. Restore purchases in the app brings a running plan back — also onto a new recovery phrase, if the old one is lost; the plan then moves to the new account.
To spend TOKU, the app draws it from your account onto your device as coins: blind-signed bearer tokens that we cannot trace back to you, which is what keeps your purchases and your prompts apart. Coins carry a validity date set when they are drawn, and they are spendable for at least 90 days from that day — often a few days longer, never less. This period is a property of the cryptographic scheme, not a commercial choice: a coin that could be spent forever would also have to be remembered forever by every server that must refuse it a second time.
Two dates, not one. The monthly allowance lapses at the end of its calendar month (section 3). Credit from codes, and credit bought before plans existed, does not lapse on your account. Coins moved back with Return to account balance return to where they came from: what was drawn from a month's allowance goes back into that allowance and lapses with it; only credit that never was allowance stays for good.
The app keeps this from costing you anything as long as it is opened now and then: it draws only a small amount at a time, moves unspent coins back to your account (or onto your recovery phrase) before they expire when it is opened in the days before the deadline, and shows a notice in the account view and, where you allow it, a local notification when coins on a device are about to expire. Coins that expire nonetheless are void and are not refunded, because we cannot tell which coins were spent and which were not. The amount at risk is by design never more than the credit most recently drawn onto that device.
You may not use the service to break the law, to generate content that infringes the rights of others, or to attack the service or the networks it relies on. The third-party models' own usage policies apply to the content they produce. We may refuse service where required by law.
Age. You must be at least 18 years old. The service is not directed at minors, and some of the model providers it relies on do not permit use by anyone under 18.
Countries. You may use the service only from a country in which the model providers it relies on offer their services, and not from a country or region under comprehensive EU, UN or US sanctions — at present in particular Russia, Belarus, Iran, North Korea, Cuba and the occupied regions of Ukraine. Plans are not sold into these countries: the web checkout and the app stores do not offer them there.
Your confirmation. The service cannot see where you are — hiding that is what the mixnet is for. By buying a plan or redeeming a code you confirm that you meet this section, and keeping to it while you use the service is your responsibility. If we learn that a plan is used in breach of it, we may end the plan for cause; what was paid for the time after it ends is refunded.
The service is provided without warranty of uninterrupted availability: it depends on the Nym mixnet and on third-party model providers. Model prices follow the providers' prices and may change; a change never reduces the number of TOKU you hold. The price of a running plan changes only with notice in text form at least one month ahead and only from the next period; you may cancel before it takes effect. We may change these terms for future periods; the version in force when a period begins applies to it.
We are liable without limitation for intent, gross negligence and damage to life, body or health. For slight negligence we are liable only for breach of essential contractual duties, limited to the foreseeable, typical damage. Model output is generated automatically and may be wrong; it is not advice.
German law applies, excluding the UN Convention on Contracts for the International Sale of Goods. Mandatory consumer-protection rules of the country you live in remain unaffected. Contact: hermes-stakepool@proton.me.