Frisbii (formerly billwerk+) vs Stripe Billing

Frisbii (formerly billwerk+)

Plans, add-ons, discounts and coupons, trials, usage-based and hybrid pricing and a self-service portal where customers upgrade and downgrade themselves are all documented, and the lifecycle runs unusually deep — pending, trial, on-hold, cancelled-to-expire and non-renewing states, scheduled actions, and per-subscription events exposed through the API. The commercial model plainly lives in the product on the Growth and Scale plans, with advanced entitlements and multi-entity setup named at the top. I found no public information on proration, on metering usage through an API, on quotes that convert into subscriptions, or on tiered, volume or seat-based pricing — and that is what keeps this below the top level.

Stripe Billing

Seat, tiered, graduated and volume pricing are documented down to the API fields, with trials, quotes, a customer portal and scheduled multi-phase subscription changes, in more than 135 currencies. The price on a product cannot be edited once a subscription exists for it, and the advanced usage-based engine (Metronome) is stated to sit outside the product at custom pricing.

Frisbii (formerly billwerk+)

Structured e-invoicing is documented, not just promised: invoices and credit notes are issued as Factur-X 1.0.07 / ZUGFeRD 2.3 hybrid documents using the EN 16931 profile, invoice numbers are generated automatically with configurable prefixes and separate sequences for credit notes, a credit note cancels an invoice while the original document stays untouched, and PDFs are generated and archived. Correction discipline and numbering are well covered. I found no public information on sending through Peppol, on XRechnung, on GoBD-compliant unalterable archiving, on an export for a tax audit, or on e-invoicing mandates in named countries — and without those, an EN 16931 hybrid PDF is only half of compliance.

Stripe Billing

Credit notes are handled as unmodifiable documents with documented effects on paid and unpaid invoices, and invoices go out in 135 currencies and 35 languages. But the vendor itself states it does not generate or transmit legally compliant e-invoice files — that runs through third-party partners such as Billit — and we found no public information on sequential numbering, mandatory content or a documented archive.

Frisbii (formerly billwerk+)

VAT is determined automatically from the customer's country, with a standard setting presetting the normal rates of the 20 main European countries, reverse charge applying to EU business customers with a VAT number configured, exemption texts printed for non-EU customers, VAT groups and reverse charge, and the German 16%/5% rate change preconfigured with key dates and automatic splitting of continuous services. The division of responsibility is at least honest — the help pages state that Frisbii Billing does not verify whether a VAT group legally exists and direct you to your tax advisor. I found no public information on VIES validation of VAT IDs, on OSS reporting data (the accounting export states that for EU B2C the system assumes you take part in the OSS procedure), on US sales tax, or on customer-location evidence being kept.

Stripe Billing

Calculation breadth is real: sales tax, VAT and GST across more than 90 countries with product tax codes, threshold monitoring, and registration and filing directly or through partners. The pages are silent on VIES validation of VAT IDs, OSS reporting data and evidence of customer location, and the captured terms state no division of tax liability between seller and vendor.

Frisbii (formerly billwerk+)

Dunning is genuinely built in: temporary failures such as an exceeded credit limit are retried automatically, permanent ones such as an expired card trigger dunning at once, intervals and actions are configurable down to automatic cancellation, SEPA direct debit via PPRO or EBICS comes with configurable return handling, and a beta AI collections agent contacts customers and records promises to pay under human oversight. One gateway covering 50+ European payment methods is included in all plans, with partner gateways named as an option on the media plan. I found no public information on card updaters, bank-transfer reconciliation, a handover to a collection agency, or any documented path for moving subscriptions and stored payment details to another provider — the question I always ask before signing.

Stripe Billing

Smart Retries with AI-chosen timing, per-segment retry policies, expired-card updates, pause-or-cancel rules after failed renewals, automatic bank-transfer reconciliation and a reported 8.2 billion dollars in failed payments recovered in 2025. What the captured pages never document is portability out: no export path for subscriptions and stored payment details to another provider is stated anywhere.

Frisbii (formerly billwerk+)

Finance gets named dashboards — revenue with MRR and ARR, customer health with retention and churn, receivables with collection performance, and the full invoice lifecycle — plus a DATEV export documented in unusual depth: SKR03 or SKR04, EXTF or ASCII formats, overridable posting keys and accounts, automatic debtor IDs, revenue accounts per tax country, rate and currency, and delivery on monthly, weekly or daily intervals to SFTP, Google Drive or OneDrive. A documented API with subscription events and a Salesforce-native integration complete the handoff. I found no public information on deferred-revenue schedules, on a full export of customers, subscriptions and invoices a successor system could import, or on data-warehouse sync.

Stripe Billing

Recognition to ASC 606 and IFRS 15 is stated, with a preview API exposing six debit/credit report types by customer, price, invoice and line item, plus named QuickBooks and NetSuite handoffs and data-warehouse sync as an upcharge. We found no public information on a DATEV export, on MRR movements explained per customer, or on a complete successor-ready export of customers and subscriptions — and the revenue API is a public preview whose fields may change.

Frisbii (formerly billwerk+)

The contracting side is verifiably German — Frisbii Germany GmbH in Frankfurt with commercial register number and VAT ID, a German data protection officer, and a data processing agreement published in four languages — and deletion duties and the client's ownership of its data are written into the terms. But the captured pages do not say where the billing platform's customer, invoice and payment data are hosted: the privacy notice offers only that data is processed 'in some cases' on servers in Germany and the EU, the Salesforce-hosted app's region is unstated, and the subprocessors I could see named — Borlabs, doo, HubSpot, Google, Microsoft, Automattic — belong to the marketing website, not to the hosting, payment and email chain that touches billing data. I found no public information on security certifications such as ISO 27001 or SOC 2.

Stripe Billing

A Dublin-registered contracting entity authorised by the Central Bank of Ireland exists, with a published data processing agreement, a published subprocessor list and ISO 27001 and SOC 2 named. But the vendor's own pages state no hosting location and no subprocessor locations, and the parent company sits in the US — where invoice and payment data physically rest cannot be verified from what was captured.

Frisbii (formerly billwerk+)

The lower tiers are genuinely public: Starter at €49/mo with one seat, Growth at €299/mo with up to five seats, the scaling rule spelled out as a 0.95% charge on processed billing, standalone payments at €0.08 per transaction, and VAT treatment and the three-month cancellation notice stated. Above that, pricing becomes a conversation: Scale and Scale for Media carry 'Tailored pricing' behind a sales call, Scale for Media adds variable fees per subscription, transaction and users that the captured pages do not quantify, and merchant bank processing and customer/card import fees are deferred to a fee breakdown the pricing page references but does not show. A buyer can compute the entry cost; I could not compute the cost at the top end from these pages.

Stripe Billing

The core scaling rule is public and precise: 0.7% of billing volume pay-as-you-go, 0.67% for volume above 80,000 euros monthly, and 1.5% + 0.25 euros for standard European cards. But revenue recognition, tax registration and filing, metering above 100 million included events, data-warehouse sync and third-party payments are all marked available at upcharge with no prices, the usage engine Metronome is priced only on request, and the VAT treatment of the fees is not stated — a buyer cannot compute a real annual cost from these pages.