disclaimer

Disclaimer

Legal notices relating to the website and apps

Last updated: 29 August 2026

1. Scope

These legal notices apply to the SchelloLabs website and to the following apps where they refer to this page:

- AufmassPro|tokolle

- HOAI-Rechner

- E|Rechner

- AbÄppelApp

- ÜbergabePro|tokolle

- PrüfPro|tokolle

- BauDokuPro|tokolle

- KüchenHopping

- RegiePro|tokolle

- RechnungsPro|tokolle

- StundenPro|tokolle

The Legal Notice, Privacy Policy, relevant app description, and any terms validly incorporated when downloading or purchasing an app or an in-app purchase also apply. Where an app displays additional notices for a particular feature, those notices must also be observed.

2. Purpose of the website and apps

SchelloLabs provides digital tools for planning, engineering, documentation, and organisation.

The content and features assist users with calculations, records, inspections, evaluations, organisational processes, and the creation of documents. They do not replace legal or tax advice relating to a specific case, professional engineering or technical design services, construction management or supervision, inspections, formal acceptance procedures, expert assessments, employment-law assessments, payroll services, veterinary advice, or any other personalised professional service.

Whether and how a result may be used depends in particular on the input data, the actual circumstances, the contractual framework, the technical conditions, and the laws, regulations, standards, technical rules, manufacturer instructions, collective agreements, works or staff agreements, and official requirements applicable to the particular case.

3. Independent verification

Calculations, suggestions, templates, records, reports, inspection results, and export files are generated on the basis of the data entered, selected, or imported by the user and the calculation and processing rules implemented in the relevant app. Incomplete, inaccurate, outdated, or incorrectly assigned input may produce inaccurate results.

Before any professional, technical, commercial, tax-related, employment-related, contractual, or other legal use, users must check in particular:

- completeness and accuracy of the input

- plausibility and calculation method of the results

- suitability for the intended purpose

- whether the app version and calculation basis used are current

- current laws, regulations, technical rules, and standards

- contractual agreements and project-specific requirements

- manufacturer instructions, approvals, and system requirements

- required approvals, evidence, measurements, and inspections

- authority of the persons involved to represent, inspect, approve, or sign

Safety-related decisions must not be based solely on app output. They must be assessed by a suitably qualified and responsible person with reference to the actual installation, property, or circumstances.

4. Notices relating to individual apps

AufmassPro|tokolle

AufmassPro|tokolle assists with recording, calculating, and documenting quantity measurements and with importing and exporting project, specification, and GAEB data. It does not replace proper on-site measurement and checking, an invoice review, or a legally binding determination of quantities, services, or payment claims.

Imported bills of quantities, formulas, rounding, quantity allocations, measurement stages, and export files must be compared with the contractual documents, the actual circumstances, and the work carried out. Technical import or calculation does not constitute acceptance of any service, variation, claim, or account. Because GAEB exchange phases, file versions, and source systems may differ, it cannot be assumed that every file will be processed without discrepancies.

HOAI-Rechner

HOAI-Rechner assists with fee calculations and comparisons on the basis of the selected input. Under section 2a of the German Ordinance on the Fees for Architects and Engineers (HOAI), the fee tables contain guidance values. The fee actually payable depends in particular on a valid fee agreement, the commissioned scope of services, the applicable fee parameters, the underlying contract, and the circumstances of the individual case.

Whether the text-form requirement, consumer information duties, or the basic fee rate under section 7 HOAI must be considered requires assessment of the specific contract. The app does not replace legal, tax, or contractual review and does not automatically create a valid fee agreement or a verifiable interim or final invoice. Changes to the HOAI, case law, and contractual basis must be considered separately.

E|Rechner

E|Rechner assists with electrical engineering calculations and their documentation. Results must be checked against the actual network, installation, routing, protection, and environmental conditions, as well as the legal, normative, technical, and manufacturer-specific requirements applicable at the time of use.

In particular, the app does not replace professional design, the selection and coordination of protective measures, network calculations by the network operator or manufacturer, measurements, inspections, commissioning, or assessment by a responsible electrically skilled person. Current-carrying capacity, voltage drop, short-circuit withstand, disconnection conditions, selectivity, and the protection concept must, where relevant, be assessed in the context of the installation as a whole.

Stored tables, standard values, conductor sizes, and calculation models can cover only defined applications and value ranges. If no result is returned for a particular combination of input, this does not necessarily mean that no technically permissible solution exists. Conversely, a displayed result does not by itself confirm that the overall solution is permissible or suitable. Work on electrical installations may be performed only by persons who are duly authorised and qualified.

PrüfPro|tokolle

PrüfPro|tokolle is a tool for recording and documenting inspections and tests. The app does not itself carry out an inspection or measurement and does not confirm the competence of the person carrying out the inspection, or the suitability, calibration, or correct use of the measuring and test equipment employed.

The scope, procedure, limits, assessment, intervals, and approval decisions must be defined by the responsible person in accordance with the requirements applicable to the item being inspected. A record generated with PrüfPro|tokolle reflects the information documented by the user and does not replace an inspection that has actually been carried out correctly or a professional assessment of its results.

ÜbergabePro|tokolle

ÜbergabePro|tokolle assists with structured documentation of property handovers, conditions, meter readings, keys, photos, findings, and signatures. The app does not itself perform a formal acceptance or legal assessment. A generated record does not automatically determine rights relating to defects, burden of proof, liability, transfer of possession or ownership, or the legal effect of declarations.

A signature drawn in the app and inserted into a document is captured without a qualified trust service or qualified certificate. It is therefore not a qualified electronic signature. The evidential or legal effect of a declaration in a particular case depends on its content, the circumstances, identity, authority to represent, and the applicable formal requirements.

BauDokuPro|tokolle

BauDokuPro|tokolle assists with creating daily, weekly, and monthly construction reports and documenting work, personnel, weather, obstructions, defects, photos, and other site events. Merely recording, storing, or signing a matter in the app does not replace a declaration that must be made to the correct recipient under law or contract.

This applies in particular to notices of concerns, obstructions, or defects, deadlines, notifications of variations, formal acceptance, and other legally relevant communications. The user must independently verify content, form, receipt, recipient, deadline, and evidence. A report does not by itself constitute acceptance of work, deadlines, costs, variations, or claims.

RegiePro|tokolle

RegiePro|tokolle assists with recording, reviewing, signing, completing, and documenting daywork, field, and work records containing services, working time, materials, equipment, photos, attachments, and optional location information. A record documents the information entered and signed by the user.

Its creation, signature, technical completion, or handover does not automatically constitute an instruction, formal acceptance, variation agreement, invoice approval, payment instruction, or acknowledgement of quantities, hours, remuneration, claims, or other entitlements. The legal effect of a signature depends on the wording of the declaration, the circumstances, identity, and authority of the person signing. A signature drawn on the screen is not a qualified electronic signature. Contractual deadlines and prescribed notification, evidence, or submission procedures must be observed independently of the app.

RechnungsPro|tokolle

RechnungsPro|tokolle assists with the structured review and documentation of invoices, cumulative accounts, contract and bill-of-quantities values, GAEB data, discounts, deductions, retentions, variations, and VAT settings, including potential cases under section 13b of the German Value Added Tax Act (UStG). Results and review sheets are based on the input, imported data, stored contract status, and calculation rules selected.

The app does not replace legal, tax, accounting, or contractual review. A calculated or recorded review value is not an automatic invoice approval, payment instruction, determination that payment is due, acknowledgement of a claim, or binding final-account review. The applicability of section 13b UStG, tax exemptions, tax rates, retentions, and contractual deductions must be assessed by a competent person for the individual case. Rounding rules, tax points, previous payments, and contractual particularities must be checked against the original documents.

StundenPro|tokolle

StundenPro|tokolle assists with recording and evaluating working time, start and end times, breaks, target and actual hours, positive and negative time balances, absences, leave, special time categories, and working-time accounts, and with creating weekly, monthly, and annual records.

The app does not replace a working-time recording system properly established and used by the employer, or an employment-law, collective-agreement, payroll tax, social security, or payroll assessment. Whether a period qualifies as working time, paid time, a rest break, a rest period, on-call duty, stand-by duty, travel time, additional work, or overtime depends on the actual circumstances and the applicable statutory, collective, workplace, and contractual rules.

Breaks suggested, calculated, or deducted automatically are calculation and documentation aids only. They do not prove that a rest break was actually taken at the required time, without interruption, and for the required duration. Applicable requirements must be checked independently, including in particular those arising from the German Working Hours Act (ArbZG), Occupational Safety and Health Act (ArbSchG), and, where relevant, the Minimum Wage Act (MiLoG), Posted Workers Act (AEntG), Youth Employment Protection Act (JArbSchG), collective agreements, works or staff agreements, and employment contracts.

Time intervals, rounding, subsequent changes, and manual entries can affect the result and must be checked before use. A record generated by the app is not by itself a payroll statement, employer approval, official confirmation, acknowledgement of overtime, or binding determination of any entitlement to remuneration, leave, or time off in lieu.

Use of the app by employees does not release employers from any applicable organisational, recording, retention, information, data protection, or employee-representation obligations. Employers, employees, and other responsible parties must determine and verify whether the app and its particular configuration are suitable for the intended workplace purpose.

AbÄppelApp

AbÄppelApp assists stable communities with tasks, appointments, duties, absences, and organisational processes. It does not replace veterinary, medical, safety-related, or animal-welfare assessment. Tasks, notices, and reminders must be checked by the responsible persons.

In the event of illness, injury, danger, or another urgent situation, the responsible persons or suitable professional or emergency services must be contacted immediately; users must not wait for an app notification or synchronisation.

KüchenHopping

KüchenHopping assists with organising events, teams, routes, and courses. Information concerning dietary preferences, intolerances, and allergies is based on user input. It may be incomplete, ambiguous, or out of date and does not constitute an assurance that a dish is free from particular ingredients or traces.

Hosts and participants must clarify ingredients, preparation, possible cross-contamination, and individual risks directly with one another. In the case of severe allergies, food safety must not be based solely on information in the app. Local emergency services must be contacted immediately in a medical emergency.

5. Documents, signatures, and legally relevant declarations

PDF, CSV, GAEB, and other files generated by the apps reflect the content entered or imported by the user and the processing performed by the relevant app.

A document does not acquire a particular legal effect, evidential value, suitability for audit, contractual or employment-law binding effect, or tax recognition merely because it was created, completed, archived, signed, or provided with a technical checksum using a SchelloLabs app. The user must verify whether the content, form, signature, identity, authority to represent, recipient, transmission method, receipt, and deadline are sufficient for the intended purpose.

An electronic signature may not be denied legal effect or admissibility as evidence solely because it is electronic or does not satisfy the requirements for a qualified electronic signature. However, the drawing function used in SchelloLabs apps does not provide a qualified electronic signature, does not automatically verify the identity or authority of the person signing, and does not necessarily satisfy a form prescribed by law or contract.

Signing or exporting within the app does not automatically prove that a declaration reached the intended recipient within the required period. Exported documents must be checked in full before they are sent. This applies especially to personal data, confidential project information, calculation results, quantities, times, measurements, invoice and tax data, signatures, photos, and attachments.

6. Completion, archiving, and technical integrity

Some apps can protect completed records against accidental changes, create snapshots, record changes, or use technical checksums. These features support traceability and integrity checks within the relevant app and the data scope covered by the feature.

They do not replace a separately assessed archiving, procedural, and retention concept and do not automatically establish revision-secure or GoBD-compliant archiving, notarisation or official certification, a qualified electronic time stamp, or a qualified electronic signature. A technical checksum does not by itself confirm the substantive accuracy or authenticity of content, the identity of any person involved, or that the content remained unchanged outside the scope checked by the app.

Statutory, tax, employment-law, professional, or contractual retention, documentation, and evidence obligations must be assessed and fulfilled separately by the user or responsible organisation.

7. Import, export, and data exchange

File formats and interfaces may be implemented differently by different programs, versions, and manufacturers. Despite careful development, display discrepancies, unsupported content, rounding differences, differing character encodings, metadata that is not transferred, and other losses of information during import or export cannot be completely ruled out.

Users must retain original files and compare transferred data with the source before further processing. Successful technical processing does not automatically mean that a file is professionally, mathematically, contractually, fiscally, or legally complete and correct.

8. Data backup, iCloud, CloudKit, StoreKit, and third-party services

Some apps may use Apple services such as the App Store, StoreKit, iCloud, or CloudKit, as well as operating-system import, export, and sharing functions.

Availability, synchronisation, and data transmission may depend on factors including the Apple Account, device settings, internet connection, available storage, operating system version, and service availability of the relevant provider. SchelloLabs cannot guarantee that third-party services will be available continuously or operate without conflicts.

Important data and exported documents must be backed up appropriately. Synchronisation is not a substitute for an independent backup. Before changing devices, reinstalling an app, deleting data, or changing the iCloud configuration, users must check that a current, complete, and readable backup is available.

Deleting an app from a device and deleting its iCloud or CloudKit data are separate operations. A function offered within an app to delete its iCloud data applies only to data belonging to that app. It does not delete other iCloud content, data belonging to other SchelloLabs apps, or App Store purchase and subscription entitlements.

Once synchronised, deletion of data may also take effect on other devices and may be permanent. The deletion may appear after a delay. Content that has already been exported, sent, copied, or stored by recipients must be deleted separately at its respective storage location.

The “Restore Purchases” function can re-establish only restorable purchase or subscription entitlements; it does not restore deleted projects, documents, or other app data. Deleting an app or its data does not cancel a subscription purchased through the App Store. Subscriptions must be managed and, where required, cancelled through the Apple Account.

9. External content and links

The website and apps may contain links to external websites, documents, App Store pages, or third-party services. The relevant provider is responsible for its content, availability, and data processing.

SchelloLabs does not adopt third-party content as its own merely by providing a link unless this is expressly stated. External content is not continuously monitored without a specific reason. Unlawful, inaccurate, or unavailable content may be reported to SchelloLabs. Where a report is substantiated, the relevant link will be reviewed and removed where necessary.

10. User input, data protection, and third-party rights

Users or the organisations deploying the apps are responsible for the selection, lawfulness, and accuracy of content under their control and for the recipients and purposes they determine. This does not affect SchelloLabs' own responsibility for processing described in the Privacy Policy.

Before processing or disclosing content, users must consider in particular whether rights of personality, data protection law, copyright, trade secrets, employment-law requirements, employee-representation rights, contractual confidentiality duties, or other third-party rights are affected. This applies especially to photos of people, signatures, location information, contact, employee, working-time, absence, customer, project, contract, and invoice data, plans, bills of quantities, documents, and third-party images or text.

Providing a technical input, photo, location, import, synchronisation, time-recording, or sharing feature does not mean that its particular use is legally permitted. Professional and organisational users must in particular identify and comply with the applicable legal basis, purpose, data minimisation, information duties, access controls, retention period, permitted recipients, deletion duties, and evidence requirements.

11. Copyright and trade marks

Content, text, graphics, app interfaces, document templates, and other works created by SchelloLabs are protected by copyright where the statutory requirements are met.

Reproduction, modification, distribution, or other use outside statutory exceptions and the rights granted requires the prior permission of the relevant rights holder. Downloads and copies may be used only within the intended app features, the rights granted, or applicable statutory permissions.

Names, logos, and trade marks belonging to third parties remain the property of their respective owners. Reference to them serves only to describe products, services, interfaces, or compatibility and does not establish any commercial association, endorsement, or certification unless expressly stated otherwise.

12. Availability, currency, and changes

SchelloLabs develops and maintains the website and apps on an ongoing basis. Features may be changed, added, or discontinued for legitimate technical, legal, security-related, or commercial reasons, subject to the applicable statutory and contractual requirements. Statutory information and update obligations, remedies for defects or lack of conformity, and consumer rights remain unaffected.

The laws, contracts, standards, and technical rules applicable at the time of professional use are decisive. Older app versions, printouts, export files, or locally stored copies may be outdated. Users must give appropriate consideration to available security and functional updates and to changes in professional or legal requirements.

13. Liability and mandatory statutory rights

SchelloLabs develops and maintains the website and apps with reasonable care. Nevertheless, errors, technical faults, or discrepancies cannot be excluded in every case.

The statutory rules on liability apply. In particular, these legal notices do not exclude liability that cannot lawfully be excluded or limited, including liability arising from intent, gross negligence, death or personal injury, product liability law, guarantees given, or other mandatory statutory provisions.

Statutory remedies for defects or lack of conformity, consumer rights, and all other mandatory rights remain unaffected. These notices do not alter any rights and obligations individually agreed between SchelloLabs and the user.

14. Provider, contact, and further legal information

SchelloLabs – Marcus Schellstede

Pirschweg 22

26160 Bad Zwischenahn

Germany

Telephone: +49 4486 3684202

Email: info@schellolabs.de

Website: https://www.schellolabs.de

Legal Notice and provider information:

https://www.schellolabs.de/impressum/

Privacy Policy:

https://www.schellolabs.de/datenschutz/

Help & Support:

https://www.schellolabs.de/support/

Terms of use for the apps (Apple Standard EULA, unless a different EULA has been validly incorporated for the relevant app):

https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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© 2026 Marcus Schellstede - SchelloLabs . Alle Rechte vorbehalten.

APPS MADE IN PETERSFEHN - GERMANY