Terms of Use

§ 1 Contracting Parties and Scope

(1) The provider is Nan Yu, operating under the brand "Treffnah" (hereinafter "Treffnah"). Contact details: see Imprint.

(2) Treffnah is an intermediary service within the meaning of Art. 3(g) DSA and provides a tool for facilitating contact between customers and tradespeople. Contracts for trade services are concluded exclusively and directly between users. Treffnah is not a contracting party and is not an intermediary platform within the meaning of § 312i BGB.

§ 2 Registration and Identity

(1) Use of the service requires the generation of a cryptographic key pair on the user's device. Treffnah does not collect any real name, email address, or phone number.

(2) The user receives a 12-word recovery phrase (BIP39). This must be stored securely — Treffnah cannot reset or recover it.

§ 3 Subscription and Payment

(1) Treffnah is funded exclusively through subscriptions. No commission on orders. Payment between customer and tradesperson occurs directly; Treffnah is not involved.

(2) Customers: free basic tier or premium tier for €0.99/month.

(3) Tradespeople: free trial tier (first 5 orders free), then Basic (€7.90/month), Pro (€14.90), or Team (€29.90).

(4) Billing is processed via Apple App Store or Google Play Store according to their respective terms.

(5) Right of withdrawal for digital subscriptions: Consumers have a 14-day right of withdrawal under § 356 para. 5 BGB. The right of withdrawal expires early if performance of the subscription has commenced with the consumer's express consent before the expiry of the period and the consumer has confirmed knowledge of the loss of the right of withdrawal. Cancellation of the subscription is made via the App Store or Google Play Store.

§ 4 User Obligations and Qualification Statements

(1) Users undertake to provide truthful information regarding service categories and availability.

(2) Tradespeople must independently ensure that they are professionally and legally authorised to perform the services offered (e.g. entry in the crafts register, registration with the Chamber of Crafts, master craftsman requirement under the HwO). Tradespeople are also obliged to fulfil all tax registration and declaration obligations independently; Treffnah is not a tax advisor and does not provide tax advice.

(3) Public liability insurance: Tradespeople are independently obliged to take out and maintain adequate public liability insurance for the activities offered. Treffnah provides neither insurance cover nor a guarantee for any damages arising in connection with orders initiated via Treffnah.

(4) Tradespeople may optionally upload qualification certificates, insurance documents, or a business registration in the app. Tradespeople without uploaded documents will be marked to customers with a corresponding notice drawing attention to the missing documents. Treffnah does not verify the authenticity or validity of uploaded documents.

(5) Treffnah assumes no review of the qualifications or authorisations of individual users — this is consistent with the prohibition of general monitoring obligations under Art. 8 DSA.

§ 4a Pricing and Estimates

(1) All prices, hourly rates, and estimates displayed on Treffnah are set exclusively and independently by the tradespeople. Treffnah has no influence on pricing, price-setting, or price negotiations.

(2) Estimates are non-binding approximations pursuant to § 650 BGB. A binding price agreement is concluded exclusively between the customer and the tradesperson, not through use of the app.

(3) Deviations from the estimate require the express written confirmation of both parties pursuant to §§ 631 et seq. BGB.

§ 4b Location Data

(1) Location data is stored on our servers exclusively in the form of a Geohash-3 region identifier (approx. 156 × 156 km grid). It is technically impossible to trace back to a precise location.

(2) During active job execution, tradespeople may optionally transmit their real-time location directly to the customer (P2P, end-to-end encrypted). This transmission occurs exclusively upon express activation by the tradesperson and is automatically terminated after no more than 4 hours. Treffnah servers receive no knowledge of real-time location data at any time.

Legal basis: Art. 6(1)(b) GDPR (contract performance) when location sharing is actively used; otherwise Art. 6(1)(f) GDPR (legitimate interest — regional search service).

§ 4c Rules of Use (Content Moderation under Art. 14 DSA)

The following are prohibited in particular:

• Offering or advertising services that violate German law (undeclared work, impermissible medical services, illegal drug trade, violations of the BtMG, etc.)
• Insults, discrimination, harassment of other users
• Phishing, fraud, identity deception
• Abuse of the reporting and complaints system through repeatedly manifestly unfounded reports (pursuant to Art. 23 DSA)
• Advertising or brokering of activities circumventing the statutory master craftsman requirement

§ 4d Notice-and-Action Procedure (Art. 16 DSA)

(1) Violations of § 4c or unlawful content may be reported at any time:

• Email: abuse@treffnah.de
• In-app report button on the workshop profile
• API: POST https://api.treffnah.de/abuse/report

(2) An effective report must include: a detailed justification for the suspected unlawfulness, a clear identification of the affected content (device_token or entry_id), the reporter's name and email address, and a declaration of good faith as to the accuracy of the information.

(3) We process reports within 72 hours and communicate the outcome to the reporter and the affected user (Art. 17 DSA — Statement of Reasons).

§ 4e Suspension and Internal Complaints Procedure (Art. 20 DSA)

(1) In cases of serious or repeated violations of § 4c, we may temporarily or permanently suspend the profile (device_token).

(2) Prior to any suspension — except in serious cases pursuant to Art. 18 DSA — a warning will be issued with an opportunity to respond.

(3) An appeal against a suspension may be lodged within 6 months:

• Email: appeal@treffnah.de
• Response time: 14 working days

(4) Out-of-court dispute resolution pursuant to Art. 21 DSA and recourse to the ordinary courts remain unaffected.

§ 4f Technical Impossibility of Content Moderation in Encrypted Communications

(1) Treffnah enables end-to-end encrypted exchange of business messages between customers and tradespeople via WebRTC + XChaCha20-Poly1305. Treffnah has no technical means to view, decrypt, or moderate the content of this communication.

(2) Responsibility for the content of encrypted communications lies exclusively with the respective communication partners. Treffnah is not liable for unlawful content in encrypted messages, as Treffnah can have neither knowledge within the meaning of Art. 6(1)(a) DSA nor is there a general monitoring obligation pursuant to Art. 8 DSA.

(3) If you suspect criminal content in encrypted communications, please contact the competent law enforcement authorities pursuant to § 158 StPO.

§ 5 Liability Disclaimer

(1) Treffnah is not liable for the performance, quality, or payment of orders concluded between users.

(2) Treffnah benefits from the liability privileges under Art. 4, Art. 5, and Art. 6 DSA as an intermediary service.

(3) Disputes between users are resolved through normal legal channels. Treffnah recommends fixed-price offers as a written record pursuant to §§ 631 et seq. BGB (works contract).

(4) Otherwise, Treffnah is liable only for intentional misconduct or gross negligence pursuant to § 276 BGB and for breach of essential contractual obligations (cardinal obligations). In cases of simple negligence, liability is limited to the foreseeable typical damage.

§ 6 Cancellation and Data Export

(1) The subscription may be cancelled at any time — within the app or via the App Store / Play Store.

(2) Order data, invoices, and history remain on the user's device and can be exported at any time as PDF and CSV (corresponding to Art. 20 GDPR data portability).

§ 7 Account and Contractual Relationship

(1) The device account (identified by the cryptographic key) is separate from the subscription contractual relationship with Treffnah. The subscription contract is concluded directly via the Apple App Store or Google Play Store.

(2) Deletion of the device account (resetting the account in the app) does not automatically terminate an existing subscription. Subscriptions must be cancelled separately via the respective app store.

(3) Encrypted communications and order data between users are stored exclusively locally on end devices and will be irrecoverably deleted upon account reset. Treffnah cannot restore this data.

§ 8 Privacy

Our Privacy Policy applies.

§ 9 Out-of-Court Dispute Resolution (ODR)

The European Commission provides a platform for online dispute resolution (ODR): ec.europa.eu/consumers/odr

We are neither obliged nor willing to participate in dispute resolution proceedings before a consumer arbitration board pursuant to § 36 VSBG. The reference to the ODR platform is made solely to fulfil the statutory information obligation pursuant to § 37 VSBG.

§ 10 Applicable Law and Jurisdiction

German law applies, excluding the UN Convention on Contracts for the International Sale of Goods (CISG). Place of jurisdiction is Dortmund (registered office of the provider), to the extent permitted by law.

§ 11 Severability Clause

Should any individual provisions be invalid, the validity of the remaining provisions shall remain unaffected. An invalid provision shall be replaced by a valid one that most closely reflects the economic purpose.