
Pay Day: E-Invoice & Peppol
Factur-X EN 16931 VAT invoice
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Free
In-App Purchases
About
Most invoice apps make a pretty PDF. Pay Day makes one your tax authority's system can actually read.
The EU is switching to mandatory electronic invoicing — Belgium for all businesses (2026), with Germany, France (2027), Poland and more rolling out next. That means a normal PDF is no longer enough. Pay Day is built for exactly this moment, on your iPhone, with no desktop software and no monthly bookkeeping suite.
FREE, AND GENUINELY GENEROUS
- Unlimited invoices and estimates. No per-document limit, no watermark, no "upgrade to export."
- Unlimited clients, your logo, and multi-currency with European Central Bank reference rates.
- A real EN 16931 VAT engine: standard rates, intra-community reverse charge, zero-rated and exempt lines — with a correct, properly rounded VAT breakdown on every document.
- Works fully offline. Bill from a job site, a train, anywhere.
- No account required to start. Open the app and you're invoicing.
PRO — REAL E-INVOICE COMPLIANCE, NOT JUST A PDF
- Factur-X / ZUGFeRD e-invoices: a single hybrid file that looks like a clean invoice to your client and carries embedded EN 16931 data a tax authority's system can read automatically. Independently validated as a valid PDF/A-3 with valid EN 16931 XML.
- Peppol delivery: send your invoice straight into your client's accounting system over the EU's official network — no email attachment, no portal logins.
- Recurring invoices: set it once, get paid every month.
- Your branding: logo, accent colour, and templates that look like your business, not a template.
- Live VAT validation: check every client's VAT ID against the EU VIES service before you issue.
CREDIT PACKS — PAY ONLY FOR WHAT YOU SEND
- Top up with consumable credit packs that cover each Peppol network send (we pass through the real per-send cost rather than padding a subscription).
- The same credits power optional AI helpers: snap a photo of a quote or receipt and turn it into line items, type a rough description and let it draft the lines, or generate a tactful payment-reminder email for an overdue invoice. AI actions cost a few credits each and are entirely optional — the app is complete without them.
WHO IT'S FOR
Freelancers, consultants, designers, developers, and small businesses across the EU who invoice other businesses and need to be ready for e-invoicing mandates — without paying for a heavyweight accounting platform.
HONEST PROMISE
The free app is a complete invoicing tool, not a trial. We only ask you to pay where it genuinely costs us or genuinely earns you compliance: structured e-invoices, network delivery, automation, and AI. No fake urgency, no nagging, no surprise limits.
Pay Day Pro is an auto-renewing subscription, monthly or annual with a 7-day free trial. Peppol network sends are metered separately via consumable credit packs on every Pro plan. Payment is charged to your Apple ID; subscriptions renew automatically unless cancelled at least 24 hours before the end of the period; manage or cancel anytime in your Apple ID settings. Credit packs are one-time purchases.
Terms of Use (EULA): https://mako.midgarcorp.cc/terms/payday
Privacy Policy: https://mako.midgarcorp.cc/privacy/payday
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What's New in Pay Day
1.0.3
July 30, 2026
The whole app is now localized — every screen, not just this page. Now in German, Spanish, Finnish, French, Italian, Japanese, Korean, Dutch, Polish, Brazilian Portuguese, Simplified Chinese, Traditional Chinese.
MoreSubscription plans
Pay Day Pro (Annual)
EN 16931 e-invoices, Peppol delivery & branding.
$39.991 Year
7 Days trial4
In-App Purchases
$2.99
30 Credits
Starter pack to try AI-assisted invoicing




