SpiniX.so VS DynamicDocumentAPI

SpiniX.so's answer

SpiniX turns every customer visit into a data collection moment through a gamified QR prize wheel. Guests scan, spin, and win — while the business collects email, phone number, and wallet pass in a single interaction. Unlike loyalty apps that require downloads, SpiniX works instantly from any phone camera with zero friction.

DynamicDocumentAPI's answer:

It covers the whole path from data to finished document in one API: you design a template in a visual or HTML editor (or send raw HTML, CSS or Markdown), send JSON, and get a PDF or image back. The same service also creates e-invoices (XRechnung, EN 16931, Factur-X / ZUGFeRD) that are validated against the official rules before they are returned, and can embed them in the PDF. Rendering is deterministic: the same template and data always give the same document, laid out by a headless browser, with no AI model generating content. Everything runs in the EU (Germany). It also ships an MCP server, so AI agents like Claude and ChatGPT can render documents directly.

SpiniX.so's answer

SpiniX combines three things competitors sell separately: gamified customer engagement, automated Google review collection, and a built-in email/WhatsApp campaign system. There's no app to download, no complex setup, and it starts working from the first scan. Pricing starts at €39.99/month — a fraction of what loyalty platforms charge for less functionality.

DynamicDocumentAPI's answer:

Most document APIs do one thing: convert HTML to PDF, or fill templates. Dynamic Document API does both, adds image templates, PDF merging and validated e-invoices, and offers them through a REST API, SDKs for Node and Python, Zapier, Make, n8n and an MCP server for AI agents. Data is processed and stored in the EU only, files come back as signed links that expire, and storing nothing at all is a supported option. Pricing is predictable: one published credit table, the same core features on every paid plan and a spend cap you control. We also publish a render-time benchmark with its method and raw data, so you can check our speed instead of trusting a claim. The free plan includes 50 renders a month without a credit card.

SpiniX.so's answer

Independent restaurants, cafés, bars, hotels, salons, and retail shops that want more Google reviews, higher repeat visit rates, and a guest database they actually own. Most customers are single-location businesses with 500-5000 monthly guests across Europe, Southeast Asia, and the Middle East.

DynamicDocumentAPI's answer:

Developers and product teams whose software has to send documents: invoices after a payment, certificates after a course, reports, labels and statements. Typical users are SaaS companies, marketplaces, e-commerce and learning platforms. A second group are businesses in Germany and the EU that need compliant e-invoices (XRechnung, ZUGFeRD) for the German B2B e-invoicing mandate and public-sector buyers. No-code builders use it through Zapier, Make and n8n, and teams building AI agents use the MCP server.

SpiniX.so's answer

SpiniX started in 2025 when the founder noticed restaurants were paying for ads to attract new customers but had no system to bring existing guests back. The idea was simple: what if every visit ended with a reason to return? A gamified prize wheel turned out to be that reason — guests love spinning, businesses love the data it collects and the reviews it generates.

DynamicDocumentAPI's answer:

Almost every product eventually needs to produce documents, and most teams end up building their own rendering stack: a headless browser, fonts, page breaks, storage and retries. It works until an invoice splits a table row or a certificate shows the wrong date, and then it becomes a support ticket. We built Dynamic Document API to be that layer for them: templates, rendering and delivery as one service, hosted in Europe, treating pagination, fonts and formatting as engineering problems rather than edge cases. When e-invoicing became mandatory for B2B in Germany, we added validated XRechnung and ZUGFeRD output, and with AI agents producing more paperwork, an MCP server followed.

SpiniX.so's answer

• React (TypeScript) frontend hosted on Netlify
• Supabase (PostgreSQL + Edge Functions + Auth + Storage)
• Stripe for billing
• Apple Wallet and Google Wallet pass generation
• Twilio for WhatsApp messaging
• Resend for transactional email
• Claude and Gemini AI for review reply generation and analytics

DynamicDocumentAPI's answer:

Rendering runs in Rust workers that drive headless Chromium over the DevTools protocol, with MiniJinja for templates. The API and control plane are built with Django and Django REST Framework, with Celery, PostgreSQL, Valkey and NATS JetStream for queues and events, and S3-compatible object storage for files. PDF/A output is checked with veraPDF and e-invoices with the official KoSIT validator. The dashboard and website are built with Next.js. Everything runs on Kubernetes in data centres in Germany.

SpiniX.so's answer

• Gamerland (Hungary — entertainment venue)
• AROOM Kalandjátékok (Hungary — escape room chain)
• Club 68 Pécs (Hungary — nightlife venue)
• Game Up! Pub (Hungary — gaming pub)
• PalacsintaPont (Hungary — restaurant)
• Geppetto Pizzéria (Hungary — Italian restaurant)
• Poké Poké (Hungary — poké bowl restaurant)
• Mákvirág Bisztró (Hungary — bistro)

DynamicDocumentAPI's answer:

Dynamic Document API is a young product. Our users are mostly developers and small SaaS teams, and we don't name customers without their permission.