Terms of Use

For the DUROLUMO app: free trial and subscription, for consumers and businesses. English translation – the German version is binding.

Last updated: · Deutsche Fassung

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§ 1 Provider, scope, contract language

(1) The provider of the DUROLUMO app and your contractual partner is DRAIF Systems GmbH, Waldstraße 14, 91091 Großenseebach, Germany, registered in the commercial register (Amtsgericht Fürth, HRB 22273), represented by its managing director Dominik Reif (“we”). You can reach us by e-mail at dominik.reif@draif-systems.com and by telephone at +49 9135 5718940.

(2) These Terms of Use and general terms and conditions (“Terms”) apply to all contracts for the use of DUROLUMO: the free trial and the paid subscription.

(3) The Terms apply to consumers (§ 13 German Civil Code, BGB) and businesses (§ 14 BGB). Provisions that expressly refer to consumers apply only to consumers.

(4) Other services of DRAIF Systems GmbH for business customers, such as software development and consulting, are governed by the separate terms for business customers (German). They do not apply to DUROLUMO.

(5) The contract is concluded in German. These Terms are available in German (Nutzungsbedingungen und AGB) and as this English translation. In case of discrepancies, the German version prevails.

§ 2 Services

(1) DUROLUMO is a web application for training planning with the help of artificial intelligence (AI). Based on your information (for example sports, goals and races, available time, fixed appointments, fitness level and notes on complaints), DUROLUMO creates a personal training plan and adapts it when your information, your schedule or your training data change.

(2) An AI-based coach answers your questions about your plan, training and recovery in the app and can change your plan in the conversation. Optionally, you can receive messages from the coach via WhatsApp and write to it there.

(3) Optionally, you can connect a Garmin Connect account. DUROLUMO then imports your activities and health metrics from Garmin and sends planned sessions to your Garmin calendar. WhatsApp and Garmin require your own account with the respective provider and depend on that provider making its interface available.

(4) DUROLUMO also includes features for interacting with other users (for example friends, running meetups and group sessions).

(5) DUROLUMO is provided over the internet in your browser. You need internet access and an up-to-date browser; no installation is required.

(6) Temporary interruptions may occur due to maintenance, security updates or disruptions beyond our control. We keep them as short as possible. Your statutory rights remain unaffected.

(7) We may change DUROLUMO beyond what is necessary to keep it in conformity with the contract if there is a valid reason. Valid reasons are: adaptation to a new technical environment or to a higher number of users, improved security, new findings in training science, changes to integrated third-party services and the implementation of legal requirements. A change does not cause you any additional costs. We inform you clearly and comprehensibly about the change. If a change impairs your access to DUROLUMO or its usability more than insignificantly, we inform you by e-mail within a reasonable period in advance about the features and timing of the change and about your rights. In this case, consumers may terminate the contract free of charge within 30 days in accordance with § 327r(3) and (4) BGB.

§ 3 Artificial intelligence

(1) Training plans, adaptations, explanations and the coach’s answers are generated with the help of AI language models. When you write to the coach – in the app or via WhatsApp – you are interacting with an AI system, not with a human.

(2) AI-generated content may be incomplete or wrong. Please check whether recommendations suit your condition and situation before you train according to them.

(3) Which data we transmit to which AI provider is described in the Privacy Policy.

§ 4 Training and health notice

(1) DUROLUMO is a training planning tool. DUROLUMO is not a medical device, does not make diagnoses and does not replace medical examination, advice or treatment. DUROLUMO is not intended for emergencies.

(2) You decide yourself whether and how you train a session. Please talk to a doctor before you start training if you have complaints, pre-existing conditions or injuries, are pregnant or are unsure whether you can cope with the load. Stop a session and seek medical advice if pain, dizziness, shortness of breath, chest pain or other unusual symptoms occur.

(3) The plan can only take into account what you tell us or what a connected watch transmits. Please keep your information on complaints and injuries up to date.

(4) This notice does not limit your statutory rights in case of defects (§ 11) or our liability (§ 12).

§ 5 Account and minimum age

(1) DUROLUMO may only be used by adults. You must be at least 18 years old when you register.

(2) To use DUROLUMO, you create an account. The account is for you personally. Please provide accurate information and keep your login details secret.

(3) Content you share with others (for example a running meetup, photos or comments) must not infringe third-party rights or violate the law. You grant us the rights needed to show this content to the people you have chosen. We may remove unlawful content.

§ 6 Free trial

(1) The free trial starts when you create your account (if there is a waiting period, when your account is activated, paragraph 4). You then provide information about yourself and your training in the set-up process and receive a summary. There you can check your information and correct it via “Back”. With the button for creating the plan you complete the set-up process and agree to these Terms.

(2) The trial lasts 14 days and is free of charge. No payment details are required. If we promised you a longer trial when you registered, that period applies.

(3) The trial ends automatically. You do not need to cancel. The trial does not turn into a paid subscription, and you incur no costs. After the trial ends, your account remains; the features are available again once you take out a subscription under § 7.

(4) We admit a limited number of new users per week. If the places for a week are taken, we activate your account later and inform you by e-mail. In this case, the trial only starts upon activation.

(5) About three days before the trial ends, we remind you by e-mail.

(6) You can end the trial at any time and have your account deleted. A message to dominik.reif@draif-systems.com is sufficient.

§ 7 Taking out the subscription; contract text

(1) A paid subscription is only concluded if you actively take it out yourself. This works as follows: in DUROLUMO you choose to take out the subscription (in the subscription dialog or in the settings). You are then redirected to the order page of our payment service provider Stripe. There you see the service and the price, enter your payment details and submit the order using the order button.

(2) Until you submit the order, you can correct your entries on the order page at any time or cancel the process by leaving the page.

(3) By submitting the order you make a binding offer to conclude the subscription. We accept the offer by activating the subscription for your account.

(4) If you take out the subscription during a running trial, the paid subscription starts when you take it out. The remaining days of the trial lapse; they are not credited to the subscription.

(5) You can see the status, billing period and invoices of your subscription in the settings. We do not store the contract text in a form accessible to you after the contract has been concluded. The current version of these Terms and of the withdrawal information is available on this website; please save or print both when you conclude the contract using your browser’s functions.

§ 8 Price, payment and discount codes

(1) The subscription costs 29,90 € per month. The price includes statutory VAT. There are no further costs.

(2) The billing period is one month and starts when you take out the subscription. The price is payable in advance at the beginning of each billing period.

(3) Payment is processed by the payment service provider Stripe. The payment methods shown in the order process are available.

(4) If you enter a valid discount code in the order process, the reduced price applies to the extent and for the period stated in the offer with which you received the code. After that, the price under paragraph 1 applies. A discount code can only be redeemed when taking out the subscription; it cannot be paid out in cash. Your rights to cancel and to withdraw also apply with a discount code.

(5) The price of a running subscription can only be changed with your consent.

§ 9 Term and cancellation

(1) The subscription runs for an indefinite period. There is no minimum term.

(2) You can cancel the subscription at any time. Cancellation takes effect at the end of the current billing period. Until then, your access remains.

(3) You can cancel online with the button “Cancel contracts here”. It is at the bottom of the pages of our website, on sign-in, registration, onboarding and subscription confirmation, and in the settings under “Subscription” and leads to the page durolumo.com/kuendigen/; no login is needed. You can also cancel by a message in text form, for example by e-mail to dominik.reif@draif-systems.com. No other form is required. When logged in, you can also manage your subscription in the settings via the customer portal of our payment service provider Stripe.

(4) We may cancel the subscription in text form with a notice period of one month to the end of a billing period.

(5) The right of both parties to terminate for good cause and further statutory termination rights remain unaffected.

(6) After the subscription ends, your account remains until you have it deleted. The subscription features are then no longer available.

§ 10 Right of withdrawal for consumers

(1) If you are a consumer, you have a statutory right of withdrawal when you take out the paid subscription. The details and the model withdrawal form are set out in the withdrawal information below (binding German version: Widerrufsbelehrung).

(2) The subscription is a contract for a continuous digital service. If you requested that the service start during the withdrawal period and you withdraw afterwards, you owe a proportionate amount for the time up to your withdrawal (§ 357a(2) BGB); we refund the remainder of your payment.

§ 11 Rights in case of defects; updates

(1) The statutory provisions apply. For consumers, these are in particular the provisions on contracts for digital products (§§ 327 et seq. BGB). There is a statutory warranty.

(2) During the term of the contract we provide the updates necessary to keep DUROLUMO in conformity with the contract, including security updates. Since DUROLUMO is provided over the internet, you receive updates the next time you load the application.

§ 12 Liability

(1) We are liable without limitation for intent and gross negligence, for damage resulting from injury to life, body or health, under the German Product Liability Act and to the extent of any guarantee we have given.

(2) Otherwise, in case of simple negligence we are only liable if we have breached an essential contractual obligation. Essential contractual obligations are obligations whose fulfilment makes the proper performance of the contract possible in the first place and on whose compliance you may regularly rely. In this case our liability is limited to the typical, foreseeable damage.

(3) Otherwise, our liability for simple negligence is excluded.

(4) The above provisions also apply to the liability of our legal representatives and vicarious agents.

§ 13 Changes to these Terms

(1) Changes to these Terms only apply to a running contract if you agree to them. We inform you of planned changes in text form at least six weeks before they are due to take effect and ask for your consent.

(2) If you do not agree, the contract continues on the previous terms. The right of both parties to cancel under § 9 remains unaffected.

(3) Changes to DUROLUMO itself are governed by § 2(7).

§ 14 Dispute resolution

We are neither willing nor obliged to participate in dispute resolution proceedings before a consumer arbitration board.

§ 15 Governing law

(1) The law of the Federal Republic of Germany applies, excluding the UN Convention on Contracts for the International Sale of Goods (CISG).

(2) If you are a consumer and your habitual residence is in another country, this choice of law does not deprive you of the protection afforded to you by the mandatory provisions of the law of that country.

Privacy Policy: durolumo.com/privacy

Annex: Withdrawal information (translation)

For consumers who take out the paid DUROLUMO subscription. This is an English translation for your information; the binding version is the German Widerrufsbelehrung.

Right of withdrawal

You have the right to withdraw from this contract within fourteen days without giving any reason.

The withdrawal period will expire after fourteen days from the day of the conclusion of the contract.

To exercise the right of withdrawal, you must inform us (DRAIF Systems GmbH, Waldstraße 14, 91091 Großenseebach, Germany, telephone: +49 9135 5718940, e-mail: dominik.reif@draif-systems.com) of your decision to withdraw from this contract by an unequivocal statement (e.g. a letter sent by post or an e-mail). You may use the attached model withdrawal form, but it is not obligatory.

To meet the withdrawal deadline, it is sufficient for you to send your communication concerning your exercise of the right of withdrawal before the withdrawal period has expired.

Effects of withdrawal

If you withdraw from this contract, we shall reimburse to you all payments received from you, including the costs of delivery (with the exception of the supplementary costs resulting from your choice of a type of delivery other than the least expensive type of standard delivery offered by us), without undue delay and in any event not later than fourteen days from the day on which we are informed about your decision to withdraw from this contract. We will carry out such reimbursement using the same means of payment as you used for the initial transaction, unless you have expressly agreed otherwise; in any event, you will not incur any fees as a result of such reimbursement.

If you requested to begin the performance of services during the withdrawal period, you shall pay us an amount which is in proportion to what has been provided until you have communicated to us your withdrawal from this contract, in comparison with the full coverage of the contract.

Model withdrawal form

(Complete and return this form only if you wish to withdraw from the contract.)

  • – To DRAIF Systems GmbH, Waldstraße 14, 91091 Großenseebach, Germany, e-mail: dominik.reif@draif-systems.com:
  • – I/We (*) hereby give notice that I/We (*) withdraw from my/our (*) contract of sale of the following goods (*)/for the provision of the following service (*)
  • – Ordered on (*)/received on (*)
  • – Name of consumer(s)
  • – Address of consumer(s)
  • – Signature of consumer(s) (only if this form is notified on paper)
  • – Date

(*) Delete as appropriate.

DRAIF Systems GmbH — Last updated: 16 October 2026