This agreement is available in German and English. The German version is authoritative; the English version is a translation.
Effective: 23 September 2026
This End User License Agreement ("Agreement") governs the use of the application Print Doctor (the "App"), including its optional subscriptions ("Plus", "Pro") and credit packs, between you (the "User") and
Software Notion, owner Sebastian Kruse, Kornblumenring 40, 31600 Uchte, Germany, e-mail: contact@software-notion.de (the "Provider").
The App is distributed through the Apple App Store and Google Play. For purchases through the Apple App Store, the provisions in Section 13 in favour of Apple apply in addition. This Agreement replaces Apple's standard Licensed Application End User License Agreement to the extent it deviates from it; it contains at least the minimum terms required by Apple. The German version of this Agreement is authoritative; the English version is a translation.
1.1 The App helps users find likely causes of failed FDM 3D prints from photos, observations, print settings and notes, explains the visible evidence and suggests steps to try. It works locally on the User's device. An optional Remote AI analysis can be used with the User's consent (Section 5).
1.2 Diagnoses are probabilities based on the information the User provides. They are suggestions, not guarantees, and do not replace the documentation and instructions of the printer or material manufacturer, which take precedence.
2.1 The Provider grants the User a non-exclusive, non-transferable, revocable right to install and use the App on devices the User owns or controls and that comply with the usage rules of the respective distribution channel (e.g. the Apple Media Services Terms and Conditions or the Google Play Terms of Service).
2.2 The User may not rent, lease, lend, sell, redistribute or sublicense the App, may not reverse engineer, decompile or disassemble it except where mandatory law permits, and may not circumvent security, attestation, usage-limit or licensing mechanisms.
3.1 All local features of the App (photo diagnosis with the local engine, guided troubleshooting, error code lookup, history, profiles and the on-device assistant where the device supports it) can be used free of charge and without limit ("Free"). A small one-time Remote AI trial allowance may be included.
3.2 The optional subscriptions "Plus" and "Pro" include a monthly allowance of Remote AI units and, depending on the plan, Deep Analyses. Credit packs are one-time purchases of additional Remote AI units. Included units reset at the start of each billing period; unused included units do not carry over. Units from credit packs do not expire.
3.3 Subscriptions and credit packs are purchased through the App Store or Google Play (in-app purchase) and billed through the User's account with the respective platform operator. Subscriptions renew automatically for the selected period unless cancelled at least 24 hours before the end of the current period. Prices, periods, included units and any trial phases are shown in the App and in the store before purchase.
3.4 Subscriptions are cancelled and managed exclusively in the account settings of the platform operator (e.g. Settings → Apple Account → Subscriptions, or Google Play → Payments & subscriptions). A period already paid for is not refunded pro rata upon cancellation unless required by law.
3.5 The Provider may change prices with effect for future subscription periods; the platform operator gives advance notice and the User may cancel before the change takes effect.
3.6 After a subscription ends, all local data and all local features remain available. Only the Remote AI allowance of the plan ends; remaining units from credit packs stay usable.
Consumers have a statutory right of withdrawal for digital content and subscriptions; its exercise and expiry are governed by the terms of the respective platform operator, who is the contracting party for the in-app purchase. Refund requests must be directed to Apple or Google.
5.1 Photos, notes, chats, diagnoses and profiles are stored locally on the User's device. The Provider has no access to this data. The App contains no advertising, no tracking and no analytics SDK.
5.2 Remote AI is optional. It runs only when the User starts it for a request and after the User's explicit consent, which can be given per analysis or remembered and withdrawn at any time in the settings. For a Remote AI analysis the App sends the photos and details chosen by the User, after removing image metadata such as location, to the Provider's gateway, which forwards them to the AI processor OpenAI for processing. The gateway stores only pseudonymous usage counters and, for a limited time, the structured result so that a retried request is not charged twice.
5.3 To provide subscriptions and usage limits, the Provider processes a pseudonymous purchase identifier through the service provider RevenueCat, the platform and app version and the entitlement status. Details are set out in the privacy policy at https://software-notion.de/legal/privacypolicy.
5.4 Results from AI models can be wrong or incomplete. The User checks suggestions before acting on them.
6.1 3D printers get hot, move on their own and run on mains power. The User decides whether and how to carry out a suggestion and follows the safety notes in the App and the instructions of the manufacturer. In particular, the User switches the printer off and lets it cool down before touching the hotend, the heated bed or wiring, never disables thermal runaway protection or other safety features, and does not open power supplies or work on mains wiring unless qualified to do so.
6.2 The User does not misuse the App or the gateway, for example through automated requests, attempts to circumvent usage limits or attestation, or uploading content that is unlawful or unrelated to 3D printing. In case of evident misuse the Provider may restrict Remote AI for the account concerned.
6.3 The User uses the App only within the applicable laws.
7.1 The Provider is solely responsible for maintenance and support of the App. Apple and Google have no obligation whatsoever to furnish any maintenance or support services with respect to the App.
7.2 Support is provided by e-mail to contact@software-notion.de or through https://software-notion.de.
7.3 The Provider may update the App and change or discontinue features as long as the core function (local diagnosis and access to the User's own saved data) is preserved.
8.1 For features provided free of charge, the Provider is liable only for fraudulently concealed defects.
8.2 For paid subscriptions and credit packs, the statutory warranty rights for digital products apply (Sections 327 et seq. of the German Civil Code). In case of a defect the Provider does not remedy within a reasonable period, the User may terminate the contract in accordance with statutory provisions.
8.3 To the extent permitted by law, the Provider does not warrant that the App or the Remote AI will be uninterrupted, error-free, always available or fit for a particular purpose, nor that a suggestion will fix a particular print problem. For purchases through the App Store, in the event of any failure of the App to conform to any applicable warranty, the User may notify Apple, and Apple will refund the purchase price (if any) for the App to the User. To the maximum extent permitted by applicable law, Apple will have no other warranty obligation whatsoever with respect to the App.
9.1 The Provider is liable without limitation for intent and gross negligence, for damage resulting from injury to life, body or health, and under the German Product Liability Act.
9.2 In cases of slight negligence, the Provider is liable only for breach of essential contractual obligations (cardinal duties), limited to the foreseeable damage typical for the contract.
9.3 The Provider is not liable for damage to prints, filament, printers or other property that results from carrying out a suggestion without the care described in Section 6.1, nor for data loss caused by the loss or reset of the User's device.
The Provider, not Apple or Google, is responsible for addressing any claims of the User or any third party relating to the App or the User's possession and/or use of the App, including product liability claims, claims that the App fails to conform to any applicable legal or regulatory requirement, and claims arising under consumer protection, privacy or similar legislation.
11.1 All rights in the App, its content, knowledge base, trademarks and documentation remain with the Provider or its licensors. Notices for third-party components are available in the App under "Third-party licences".
11.2 Printer and brand names are used only to identify products. Print Doctor is an independent product and is not affiliated with, endorsed by or sponsored by any printer manufacturer. Links to manufacturer documentation lead to third-party websites, for whose content the respective operators are responsible.
11.3 In the event of any third-party claim that the App or the User's possession and use of the App infringes that third party's intellectual property rights, the Provider, not Apple, is solely responsible for the investigation, defence, settlement and discharge of any such claim.
The User represents and warrants that they are not located in a country that is subject to a U.S. Government embargo or that has been designated by the U.S. Government as a "terrorist supporting" country, and that they are not listed on any U.S. Government list of prohibited or restricted parties. The User complies with all applicable laws when using the App.
13.1 This Agreement is concluded solely between the User and the Provider, not with Apple. The Provider, not Apple, is solely responsible for the App and its content.
13.2 The licence is limited to use of the App on Apple-branded products that the User owns or controls, as permitted by the usage rules set forth in the Apple Media Services Terms and Conditions; the App may be used through Family Sharing or volume purchasing where provided for.
13.3 Apple, Inc. and its subsidiaries are third-party beneficiaries of this Agreement. Upon the User's acceptance of this Agreement, Apple will have the right (and will be deemed to have accepted the right) to enforce this Agreement against the User as a third-party beneficiary.
13.4 Questions, complaints and claims regarding the App must be directed to the Provider: Software Notion, Kornblumenring 40, 31600 Uchte, Germany, contact@software-notion.de.
13.5 When using the App, the User must comply with applicable third-party terms (e.g. mobile carrier or wireless data service agreement).
14.1 This Agreement applies for as long as the User uses the App. The User may terminate it at any time by uninstalling the App; active subscriptions must be cancelled separately with the platform operator.
14.2 The Provider may terminate the licence with reasonable notice in the event of material breaches of this Agreement. Locally stored data is unaffected.
15.1 The law of the Federal Republic of Germany applies, excluding the UN Convention on Contracts for the International Sale of Goods. If the User is a consumer, mandatory consumer protection provisions of their state of residence remain unaffected.
15.2 If the User is a merchant, a legal entity under public law or a special fund under public law, the place of jurisdiction is the Provider's registered office.
15.3 The Provider is neither obliged nor willing to participate in dispute resolution proceedings before a consumer arbitration board within the meaning of the German Consumer Dispute Resolution Act (VSBG).
15.4 Should individual provisions of this Agreement be invalid, the validity of the remaining provisions remains unaffected.
15.5 The Provider may amend this Agreement with effect for the future. Material changes are announced in the App or in the store; continued use after they take effect constitutes acceptance to the extent permitted by law.