Terms and conditions

This English version is a convenience translation. The German terms are legally binding.

Last updated: 23 September 2026. Contracting party: Vincent Oswald, Bernstorffstraße 118, 22767 Hamburg.

1. Scope

These terms govern use of the Zeitlicht software as a web application at start.zeitlicht.app and as an iOS and Android app, and the related paid subscriptions. Customer terms do not apply unless we expressly agree in writing.

A consumer is any natural person who concludes a legal transaction for purposes that are predominantly neither commercial nor self-employed (section 13 of the German Civil Code). A trader is a natural or legal person or a partnership with legal capacity who, when concluding the contract, acts in exercise of their commercial or self-employed activity (section 14).

Processing of personal data is governed by the privacy policy.

2. Service

Zeitlicht is software for organising tasks, notes and focus time (board, timer with light column, workspaces). The current feature set is shown in the application and on the Features page. We do not owe a particular commercial result, a service-level agreement, or fitness for a purpose you have not told us about.

We keep the application in a condition that conforms to the contract and provide the updates needed for that (section 327f BGB).

We may develop the software further and change or discontinue features where there is an objective reason (for example security, a change in law, technical development, or a feature used by only a few people), you are informed in text form in advance, and the change does not put you at an unreasonable disadvantage (section 327h BGB). If the contractual purpose is no longer met or the change is unreasonable, you may terminate the contract free of charge.

3. Registration

Use requires an account with accurate details and a reachable email address. Keep the password confidential. Actions via the account are attributed to you until you notify us of misuse.

An account is personal. Sharing login details with third parties outside your workspace is not allowed.

4. Formation of contract

Tariff displays in the app are non-binding. A paid subscription is formed when you submit the order in checkout (button wording required by section 312j(3) BGB, e.g. “order with obligation to pay”) and we accept by enabling the service or sending a confirmation email. You can correct input errors before submitting with the usual controls.

The contract language is German. We store the contract text; the terms and the withdrawal information remain available on zeitlicht.app.

5. Prices and payment

The small-business exemption under section 19 of the German VAT Act applies. Prices do not include VAT; VAT is not charged. Current prices in euro are shown at checkout.

Payment is made through the provider and methods shown at checkout. On the web that is Stripe; in the native apps it is Apple or Google. The billing period (in particular monthly or yearly) follows from your order. Current tariffs: Pro EUR 3.99 / month or EUR 39.99 / year, Ultra EUR 12.99 / month or EUR 129.99 / year. If payment fails, we may suspend paid access after setting a reasonable deadline, unless we already have a right of retention.

6. Term and cancellation

The subscription first runs for the period chosen at checkout. After that the contract continues for an indefinite term unless it is cancelled effective at the end of the initial period. After that renewal you may cancel at any time on one month’s notice (section 309 no. 9 BGB).

You may cancel via the cancellation button in the app (Cancel contracts here), in account settings, or by email to hello@zeitlicht.app. What matters is receipt before the deadline.

Termination for cause remains unaffected. Cause includes a material breach after warning, or abusive use.

After the contract ends you may export your data where the app provides it; otherwise we will, on request, provide a common-format export of stored workspace content where technically reasonable. We then delete data as described in the privacy policy.

7. Right of withdrawal

Consumers have a right of withdrawal. Details are in the withdrawal information. The right expires early for digital services under the conditions stated there (section 356(4) BGB) if you expressly consent and acknowledge the loss.

8. Availability

We aim for uninterrupted availability. Maintenance, force majeure, processor outages or internet faults may limit use. There is no claim to permanent uninterrupted access. We announce planned maintenance where reasonable.

9. Customer duties

Use Zeitlicht only lawfully. Unlawful, insulting or third-party-rights-infringing content, probing or overloading the systems, bypassing security, and spam are prohibited.

You warrant that you have the rights needed for content you upload, and you indemnify us against third-party claims arising from a breach of this duty to the extent you are responsible.

10. Rights in the software and in content

All rights in the Zeitlicht software remain with us. For the contract term you receive a simple, non-transferable right to use the application as intended via the provided web interface. There is no claim to source code.

In content you submit you grant us the simple rights needed to operate the service (store, display to workspace members, back up, transmit to processors). Title and copyright in your content remain with you or the rightholders.

11. Liability

We are fully liable for intent and gross negligence, for injury to life, body or health, under the German Product Liability Act, and to the extent of any guarantee we have given.

In the event of slight negligence in breaching a duty that is essential for proper performance of the contract, whose breach jeopardises the purpose of the contract and on which you may regularly rely (cardinal duty), liability is limited to the typical, foreseeable damage.

Otherwise liability for slight negligence is excluded. The same limits apply in favour of our vicarious agents.

We are not liable for loss of data to the extent the damage could have been avoided by reasonable regular backups on your side; exports provided in the app count as reasonable.

12. Processing on behalf of traders

If you use Zeitlicht as a trader and process personal data of third parties (for example employees or customers), you are the controller and we are the processor within the meaning of Art. 28 GDPR. We will provide the processing agreement on request at hello@zeitlicht.app. Without that agreement you must not put third-party personal data into Zeitlicht where a processing agreement is required.

13. Changes to these terms

We may notify you in text form of non-material changes (for example clarifications, adaptations to a change in law that do not disadvantage you, or purely editorial changes). They apply if you do not object within six weeks of receipt. The notice will mention the right to object and the deadline. If you object, the previous terms remain in force.

Material changes and price changes apply only if you actively agree. If you decline them, the contract continues on the previous terms; either party may then terminate at the next possible date. We will not change prices to your detriment during a current, already paid period.

14. Final provisions

German law applies. Mandatory consumer-protection rules of the country of your habitual residence remain unaffected (Art. 6(2) Rome I).

If the customer is a merchant, a legal entity under public law or a special public-law fund, the venue is Hamburg. For consumers, the statutory venue applies.

We are neither willing nor obliged to take part in dispute-resolution proceedings before a consumer arbitration board (section 36 of the German Consumer Dispute Resolution Act).

If a provision is invalid, the remainder of the contract remains in effect.

The German version of these terms prevails.