Terms of Service

Xizor provides software-as-a-service tooling for mobile-app developers to manage in-app subscriptions, paywalls, App Store Connect integrations, and server notifications. The Service is offered through a web dashboard, an MCP (Model Context Protocol) server, and client SDKs.

Xizor is not a payment service provider. Xizor does not route, hold, or settle end-customer funds. Apple settles in-app purchases directly to your bank account. Xizor invoices you separately for the software service it provides. This arrangement sits outside the German Zahlungsdiensteaufsichtsgesetz (ZAG) and the EU PSD2 regime.

The Service is offered for business use (B2B) to legal persons, sole proprietorships, and individuals acting in a commercial or self-employed capacity. You confirm that you are authorised to bind your organisation when you accept these Terms. You are responsible for maintaining the security of your credentials and for all activity under your account.

Xizor charges a platform fee of 1%on the gross volume of in-app purchases (one-time and subscription) processed through your apps and observed by Xizor via App Store Server Notifications V2 and StoreKit 2 transaction receipts (“Observed Volume”).

There is no monthly fee, no seat fee, no minimum, and no ceiling. Sandbox and Xcode environments are free and do not accrue the platform fee.

Observed Volume reported by Apple in non-USD currencies is converted to USD at the daily ECB reference rate published on the transaction date, and the 1% fee is invoiced in USD unless otherwise agreed in writing.

The platform fee accrues per transaction in arrears and is invoiced monthly. At the close of each calendar month Xizor issues an electronic invoice covering the prior month’s Observed Volume. Invoices are made available in your dashboard (PDF) and via the email address on file.

Payment is due net 7 (seven) days from the invoice date and is collected by automatic charge on the payment method on file via our processor Stripe Payments Europe, Limited (“Stripe”). On payment failure we may retry the charge, suspend non-essential features, and after thirty (30) days suspend the Service. Default interest applies in accordance with §288 BGB.

Invoices are issued in compliance with §14 UStG. Each invoice states the Steuernummer / USt-IdNr of Xizor, a sequential invoice number, the service period, the applicable VAT (if any), and the relevant tax exemption note where applicable.

Customers in Germany. Invoices include 19% German VAT (Umsatzsteuer) on the platform fee.

B2B customers in other EU member states.The platform fee is subject to the reverse-charge mechanism pursuant to Article 196 of Council Directive 2006/112/EC and §13b UStG. Invoices are issued without VAT and bear the note “Reverse Charge — Steuerschuldnerschaft des Leistungsempfängers”. You are responsible for accounting for VAT in your jurisdiction. We validate VAT IDs against VIES; if validation fails, German VAT applies until you supply a valid VAT ID.

Customers outside the EU. The supply is outside the scope of EU VAT pursuant to §3a Abs. 2 UStG. You are responsible for any local taxes (e.g. US sales tax, GST, VAT equivalents) that may apply in your jurisdiction.

Tax determination, VAT-ID validation, and reverse-charge invoice language are handled automatically by our processor’s tax engine. Xizor remains the seller of record on every invoice.

The platform fee is calculated on net Observed Volume. When Apple refunds, revokes, or reverses an in-app purchase, the corresponding 1% accrual is reversed for the same billing cycle (negative meter event). Refunds that cross a billing cycle are credited against the following invoice as a credit note.

Outside of refunds tied to Apple-side reversals, the platform fee is not refundable. The mandatory consumer right of withdrawal (Widerrufsrecht) does not apply because the Service is provided B2B for business purposes; if it nonetheless applies in a given case, a request must be sent in text form to the contact below.

You agree not to:

• use the Service to process transactions originating from fraudulent, sanctioned, or unlawful activity;
• circumvent platform-fee accounting (e.g. by routing high-value purchases outside the App Store with the intent of avoiding the fee on volume that would otherwise be observed through Xizor SDKs);
• reverse-engineer, decompile, or disassemble the Service beyond what mandatory law permits, or attempt to access accounts other than your own;
• resell, sublicense, or wrap the Service for third parties without our prior written consent;
• upload personal data of end-customers beyond what is needed to operate paywalls and entitlements (we do not need email addresses unless you explicitly link them via the SDK).

Personal data processed through the Service is governed by our Privacy Notice and the Data Processing Agreement (DPA) available at /privacy and /dpa. Where you upload end-customer data we act as your processor within the meaning of Article 28 GDPR.

We aim for high availability of the Service but offer no formal SLA in the V1 phase. We may make changes, updates, or deprecations to features. Material changes that adversely affect you in a non-trivial way will be communicated by email at least thirty (30) days in advance, and you may terminate without notice within that window.

These Terms apply for as long as you use the Service. You may stop using the Service at any time by cancelling your billing via the customer portal; outstanding accrued fees up to the cancellation date remain payable. We may suspend or terminate access for material breach (including non-payment after notice) or as required by law. On termination we retain billing, tax-relevant, and audit records for the periods required by German law (typically 6–10 years; see GoBD and §147 AO).

The Service is provided on an “as is” and “as available” basis. We make no warranty of any kind, express or implied, regarding availability, accuracy, suitability for a particular purpose, or non-infringement, within the limits permitted by mandatory German law.

For damages arising from slight negligence we are liable only for the breach of essential contractual obligations (Kardinalpflichten), and only up to the foreseeable damage typical for this kind of contract. Mandatory statutory liability for intent and gross negligence, for damages from injury to life, body or health, and under the German Product Liability Act remains unaffected.

These Terms are governed by German law, excluding the UN Convention on Contracts for the International Sale of Goods (CISG). For consumers in the EU, mandatory consumer-protection provisions of the country of habitual residence remain unaffected. Place of jurisdiction for disputes with merchants, legal persons under public law, or special funds under public law is Frankfurt am Main.

Operator: Valentin Lionel Weinert, Dr.-Rohmer-Weg 11, 65719 Hofheim am Taunus, Deutschland. USt-IdNr. DE451355427. Contact: hello@xizor.dev. Full imprint at /imprint.