InvoYX: the offline-first Lexoffice alternative
The best Lexoffice alternative for tradespeople and solo founders who work on site is InvoYX — a fully offline invoicing app with ZUGFeRD 2.2/Factur-X e-invoices, DATEV CSV export, quotes, dunning and 27 languages. Where Lexoffice is cloud software that needs a connection, InvoYX runs entirely on your phone.
The short version
Choose Lexoffice if you want a full cloud accounting suite with your tax advisor logging in directly. Choose InvoYX if you invoice on the move, offline, and want ZUGFeRD e-invoices and DATEV export without a monthly cloud subscription for features you don't use.
Lexoffice vs. InvoYX: how they compare
| Lexoffice | InvoYX | |
|---|---|---|
| Price | Cloud subscription, tiered monthly plans | 7-day free trial, then €12.99/month — flat, all features |
| Works offline | No — browser/cloud, needs internet | Yes — SQLite on device, zero connection needed |
| ZUGFeRD 2.2 / Factur-X PDF | Yes (in higher tiers) | Yes — built in, every invoice |
| DATEV export | Yes | Yes — 42-field CSV booking batch |
| Quotes (Angebote) & credit notes | Yes | Yes — offers, vouchers, refunds, recurring invoices |
| Dunning (Mahnwesen) | Yes | Yes — 3-stage with configurable fees |
| Languages | German + English | 27 languages, document language independent of app language |
| Account & data | Account required, data in cloud | No account, all data stays on your device |
When Lexoffice is the better choice
Lexoffice is a full cloud accounting system. If you run an office with a bookkeeper and want your tax advisor to log in, or you need full double-entry accounting and payroll hooks, it is the stronger general-purpose tool.
When InvoYX is the better choice
InvoYX is built for the tradesperson or freelancer who writes invoices on site. Offline-first means it works in a cellar with no signal. ZUGFeRD e-invoices and DATEV export are included in one flat price, and your customer and invoice data never leaves the phone.
5 reasons to switch
- Offline-first: you write the invoice on the building site, save it, and send the PDF when you have signal again — no cloud, no reloading, no lost work.
- One flat price for everything: no tier where ZUGFeRD or DATEV is locked behind a higher plan.
- 27 languages with document language independent of app language — your customer gets the invoice in German even if you work the app in Turkish or Arabic.
- Quotes, credit notes, refunds, recurring invoices and 3-stage dunning are all built in — no separate Mahntool.
- AES-256 encrypted backup and a PIN lock: customer data and prices stay private on your device.
Frequently asked questions
Is InvoYX really a full replacement for Lexoffice?
For invoicing, quotes, dunning and tax export — yes. InvoYX does not do full double-entry accounting, payroll or VAT filing, so if you need a complete accounting suite, Lexoffice remains the broader tool. Most tradespeople only need the invoicing side, which InvoYX covers offline.
Can my tax advisor still work with InvoYX?
Yes. Export all invoices as a DATEV CSV (42-field booking batch) or ZUGFeRD e-invoices and your tax advisor imports them directly into DATEV — no re-typing.
Does InvoYX work without internet?
Completely. Everything runs in a local SQLite database on your device. You only need a connection to send the finished PDF or install updates.
Try InvoYX free for 7 days
7-day free trial, then €12.99/month. Cancel anytime. No cloud, no account.
📱 Start free trial