This is a machine translation. Ridian is operated by a German company, and this document was written in German under German law. Only the German version is legally binding; this translation is provided for convenience. Where the two differ, the German text applies.
For private and business use. These terms apply to consumers and business customers. Specific services, prices and contract terms are determined by the offer agreed when entering into the contract. An overview is planned under Pricing & access.
1. Provider, scope and order of precedence
The provider and contracting party is PPJ Venture Labs UG (haftungsbeschränkt), Hohenzollernstraße 30, 80801 Munich, Germany (legal notice, in German). “Ridian” is a product brand of that company.
These terms apply to all contracts for the use of Ridian, including its web application, APIs, synchronisation, administration features and enabled MCP functionality. Different customer terms apply only if we expressly accept them in text form.
In case of conflict, the following order applies: individually negotiated agreement or order form, including any SLA agreed there, data processing agreement, then these terms.
A consumer is an individual acting predominantly outside their trade, business or independent professional activity. A business customer acts in the course of that activity when entering into the contract. Provisions applying only to business customers are identified accordingly. Mandatory consumer rights remain unaffected.
2. Contract formation and access
A contract is formed when we expressly accept an order or provide the agreed service expressly requested. Individually agreed forms of contract remain possible. An enquiry or the general presentation on this website does not form a contract. Payment obligations require an express agreement.
The services, prices, duration and termination conditions applicable to the particular offer are communicated before the contract is formed. Consumers placing paid online orders must expressly acknowledge the obligation to pay. Registration alone does not create a paid subscription.
Anyone acting for an organisation must be authorised to do so. Additional people and applications may receive access only within the agreed scope.
Personal plans (Basic, Professional) and AI credits are available to consumers and business customers. Team plans (Team Starter, Growth, Enterprise) are for business customers only; by booking a team plan, the customer confirms acting in the course of their trade, business or profession.
3. Service scope
Ridian connects calendar services, normalises event data and performs the synchronisations or authorised tool calls configured by the customer. Data read from or written to target systems is determined by the selected configuration, effective organisation policies and third-party provider permissions.
Synchronisation runs at intervals and, where supported, on events. Delay-free real-time synchronisation is owed only if expressly agreed. Statements on the website describe the service and are not guarantees unless expressly identified as such.
For business customers, we may develop and technically modify the service provided that the agreed principal service remains available and the customer is not unreasonably disadvantaged. We will provide timely notice of material foreseeable restrictions.
Statutory requirements for digital products apply to consumers, including necessary updates and security updates. Further changes to the service require agreement unless a statutory right to make the change exists; statutory information and termination rights remain unaffected.
4. Right of use and protection of the service
During the contract term, the customer receives a limited, non-exclusive, non-transferable and non-sublicensable right to use Ridian for its own private or business purposes within the agreed scope. Resale, operation for unauthorised third parties or offering Ridian as the customer's own service requires our consent.
In particular, the customer must not:
- use the service unlawfully, abusively or in a manner that jeopardises security,
- circumvent access controls, policies or usage limits,
- disrupt or overload the service or automate requests outside enabled interfaces,
- inspect, decompile or reproduce the service except where mandatorily permitted by law, or
- use non-public parts of Ridian to develop a directly competing service.
5. Customer obligations and responsibility
The customer is responsible for:
- the legality of connected accounts, data and processing purposes,
- required consents, notices, works agreements and instructions,
- the selection of administrators, users, applications and organisation policies,
- keeping credentials confidential and reporting security incidents without undue delay,
- reviewing automated or agent-assisted actions before production use where risks require it, and
- compliance with applicable laws, sanctions and export-control rules.
Responsibility for actions through an account is determined by statutory law. Organisation-related obligations apply only where the service is used for an organisation. The customer must keep contact, billing and administration details current and reasonably assist with investigating incidents in its area of responsibility.
6. Third-party providers and connected services
Ridian depends on third-party interfaces and decisions, particularly those of Google, Microsoft and CalDAV providers. Provider changes, suspensions, revoked permissions, quotas, outages or data formats may delay, alter or prevent functionality. We are liable for such events only to the extent we are responsible for them.
We may temporarily restrict or disable a connection where necessary for security, legal compliance or protection of the service. Where possible, we will inform the customer and limit the measure to what is necessary.
7. Availability, maintenance and support
Specific availability, response times or recovery times apply only if agreed in an SLA or order form. Otherwise, we operate the service with the diligence of a prudent businessperson but do not owe uninterrupted or error-free operation.
We provide reasonable notice of planned maintenance. Emergency maintenance may occur without notice where necessary to avert a risk. Support scope and hours are set out in the applicable agreement.
The agreed service and statutory rights in respect of defects remain unaffected.
8. Trial, beta and free access
An offer may provide trial, beta, preview or free access. Any limits on time, features or volume are set out in the particular offer. Such a designation does not restrict statutory consumer rights. Clause 3 applies to changes.
Using free access alone does not create an obligation to pay. A paid plan requires an express agreement.
9. Fees and payment
Prices, included services and usage, billing periods and any minimum contract duration are determined by the offer, order summary or individual agreement agreed when entering into the contract. The pricing page shows the plans and prices currently available. The details shown in the order summary immediately before purchase apply.
The conditions agreed when entering into the contract apply. Later changes to the pricing page do not automatically change existing contracts. Prices for consumers are total prices including applicable taxes; this applies to personal plans and AI credits. Team plans are shown as net prices plus VAT.
If the customer books a plan during a running trial, the booked plan applies immediately; the first billing period and the first payment start when the trial ends.
AI credits. Each plan includes an allowance of AI credits per billing period; unused credits from this allowance expire at the end of the period. Credits bought in addition do not expire. They belong to the workspace in which they were bought and remain usable there after a plan change or after the plan is cancelled, for as long as the workspace exists. Purchased credits are not paid out and cannot be transferred to other workspaces. If the customer deletes the workspace or their account, unused purchased credits lapse. If the contract ends for reasons we are responsible for, or if we discontinue the service, we refund unused purchased credits pro rata. Statutory rights, in particular the right of withdrawal, remain unaffected.
Payment method and due dates are as agreed. For business customers paying by invoice, payment is due within 14 days unless otherwise agreed. In case of late payment, proportionate access restrictions require a reminder and a reasonable opportunity to remedy the delay; statutory rights remain unaffected.
For business customers only: set-off is permitted only for undisputed or finally adjudicated claims; retention rights apply only under the same contractual relationship. Statutory rules apply to consumers.
10. Rights in software, data and feedback
All rights in Ridian, its software, documentation, design and developments remain with us or our licensors. The customer retains its rights in data it provides and grants us the rights required during the contract term to perform the contract, maintain security, provide support and remedy defects.
We may use voluntary feedback without compensation or an obligation to implement it. This does not authorise publication of confidential information or personal data.
11. Confidentiality
Each party must keep the other party's non-public technical, commercial and organisational information confidential and use it only to perform the contract. Disclosure is permitted to personnel, advisers and subcontractors who need the information and are bound accordingly.
The obligation does not apply to information demonstrably known already, lawfully received from a third party, independently developed or publicly known. Disclosures required by law remain permitted; where legally possible, the other party will be notified beforehand. Trade secrets remain protected indefinitely and other confidential information for three years after contract end.
12. Data protection and security
Where we process personal data on the customer's behalf, the data processing agreement under Art. 28 GDPR applies. It forms part of these terms and is concluded when you accept them; no separate signature is required. The providers we engage are named in the sub-processor list, which also forms part of the agreement.
The customer remains responsible for legal basis, transparency and instructions. What we process as controller is described in the privacy policy.
We maintain appropriate technical and organisational measures. No security measure eliminates every risk; absolute security is not warranted.
The data processing agreement applies where the customer uses Ridian for professional or business purposes or for an organisation. Purely private use involves no processing on the customer's behalf; we then process the data as controller under the privacy policy.
13. Defects
Statutory rights and limitation periods in respect of defects apply to consumers. The following provisions of this clause apply only to business customers. The business customer must report reproducible defects without undue delay and provide the information needed for analysis. At our option, we may remedy the defect or provide a reasonable workaround. If cure fails, the customer's statutory rights remain unaffected.
An impairment is not a defect to the extent caused by use contrary to the agreement, customer systems, third parties or a modification without our consent. Defect claims become time-barred twelve months after the statutory commencement date. This does not apply to cases of unlimited liability under clause 14 or where mandatory law requires a longer period.
14. Liability
We have unlimited liability for intent and gross negligence, injury to life, body or health, expressly assumed guarantees, liability under the German Product Liability Act and any other mandatory statutory liability.
Statutory liability rules apply to consumers. The following limitations in this clause apply only to business customers. In cases of ordinary negligence, we are liable only for breach of a material contractual obligation whose performance makes proper execution of the contract possible and on whose performance the customer may regularly rely. Liability is then limited to damage foreseeable and typical for the contract when it was entered into. Liability for ordinary negligence is otherwise excluded.
Business customers only: for loss of data, liability is limited to the typical recovery cost that would have arisen with reasonable backup and customer cooperation. These limitations apply correspondingly for the benefit of our officers, employees and agents.
15. Third-party claims
The following indemnity applies only to business customers. If a business customer culpably infringes third-party rights or legal obligations through its data, configuration or use, it indemnifies us against resulting justified third-party claims and necessary, reasonable defence costs. We will notify the customer without undue delay and provide a reasonable opportunity to participate in the defence and settlements. Our own breaches remain unaffected.
16. Term, termination and suspension
Duration, renewal and ordinary termination follow the conditions agreed when entering into the contract and statutory law. Where no contractual provision exists, statutory rules apply. Personal plans are concluded for one month, renew for one further month at a time and can be cancelled at the end of any month. Team plans (business customers only, section 2) are available monthly or yearly; they renew for the booked period and can be cancelled at its end. The right to terminate for cause remains unaffected. Termination notices may be sent to [email protected]. Consumers and business customers can also cancel subscriptions at any time without signing in via the “Cancel contracts here” button, or signed in via Billing in the console. We confirm receipt of a cancellation in text form without undue delay. The time of receipt, not the time of processing, determines whether and when the contract ends; we refund a renewal charged after receipt.
We may temporarily suspend access where there are concrete indications of abuse, a material security risk, material breach or continuing late payment after reminder. The measure must be proportionate and, where possible, the customer will first have an opportunity to cure.
The right of use ends when the contract ends. Data is deleted in accordance with the individual agreement, data processing agreement and privacy policy. Copies created by Ridian in target calendars can be removed only while the required permissions remain available. Statutory retention duties remain unaffected.
Data export and switching. On request to [email protected], we provide the customer's data held by us in a common, machine-readable format: account, organisation and connection configuration and sync rules as JSON, and events managed by Ridian as iCalendar (ICS). Third-party credentials and security logs are excluded for security reasons. Requests are possible until 30 days after the contract ends; the data is then deleted under section 11 of the data processing agreement or the privacy policy. The customer may initiate a switch to another provider at any time with at most two months' notice; during a transitional period of up to 30 days we support it to a reasonable extent, and the contract ends when the switch is complete. Export and switching are free of charge.
17. Changes
Changes to these terms or agreed prices for existing contracts require agreement unless permitted by a statutory basis. Silence is not consent. Changes to a website or pricing overview alone do not change the contract.
The data processing agreement and the sub-processor list follow the procedures set out in them instead: additions to the sub-processors and minor changes to the agreement are announced with 30 calendar days' notice, during which you may object. Changes that materially reduce your rights or our obligations, or extend the purposes of processing, require your express acceptance. These procedures are limited to the processing of personal data and do not widen the rule above.
Clause 3 applies to changes to the service itself.
18. Final provisions
For business customers only: events beyond reasonable control — including natural disasters, war, industrial disputes, government action and widespread network or cloud failures — suspend the affected party's performance obligations for the duration and extent of the impediment, provided that party is not responsible and cannot reasonably avoid the consequences.
For business customers only: the customer may assign contractual rights only with our consent; § 354a of the German Commercial Code remains unaffected. We may transfer the contract as part of a restructuring or transfer of the Ridian business to an affiliate or successor, provided the customer's legitimate interests are not impaired.
German law applies, excluding the UN Convention on Contracts for the International Sale of Goods. Munich is the exclusive place of jurisdiction where the customer is a merchant, legal entity under public law or special fund under public law; we may also sue at the customer's general place of jurisdiction.
For consumers, the choice of law does not remove protection provided by mandatory rules of their country of habitual residence to the extent those rules apply under the applicable conflict-of-laws rules. Statutory places of jurisdiction remain unaffected. Statutory requirements apply to any transfer of the contract.
If a provision is invalid, the remaining provisions continue to apply and the invalid provision is replaced by statutory law. Side agreements and changes to the individual contract require at least text form unless mandatory law requires stricter form; individual agreements take precedence.
19. Consumer right of withdrawal
Consumers have a statutory right of withdrawal for distance contracts unless a statutory exception applies. The withdrawal policy and model withdrawal form relating to the particular contract are separate contract-formation information; we also send them with the order confirmation by email. Simply activating access does not automatically extinguish an existing right of withdrawal.
In addition to the means set out in the withdrawal policy, consumers can declare withdrawal at any time without signing in via the “Withdraw from contract” button. We confirm receipt in text form without undue delay, stating the content, date and time.