Fast Setup
Open the app. Add your first customer. Send your first invoice. Done.
Run your business from your phone
Invoices out in under a minute. Customers, products and stock in one place. Built for Germany - eRechnung ready.
Only 50 founding spots · First 2 months free
Sound familiar?
- No idea how much you earned this month
- Printing invoices just to scan them back
- Spending Sunday nights on admin
Why Assist4Biz?
No Install Needed
Works in your browser, phone, tablet or laptop. Nothing to download.
Grows When You're Ready
Start with invoicing. Add inventory, taxes and ERP when it makes sense for you.
Everything you need
Invoicing
Send professional invoices by email in seconds. ZUGFeRD and eRechnung included - no plugin needed.
Customers
Full contact history, addresses and invoice records. Find any client in two taps.
Products & Inventory
Items, services and stock levels in one list. Works whether you sell one thing or a hundred.
Taxes
German tax rates built in. VAT, Kleinunternehmer and export handled automatically.
See your business at a glance
Your numbers update as you invoice. Total revenue, outstanding invoices and top customers. Monthly and yearly totals. All on one screen.
Available onGrowthPro
When your business grows, Assist4Biz grows with it.
Built on a professional ERP backend, so you never have to migrate to a new system.
- German eRechnung and ZUGFeRD compliant
- GDPR ready from day one
- No platform switch when you scale
Your business advisor. Built in.
Every month, Assist4Biz reads your data and tells you what's working, what isn't, and what to do next.
- →Year-end summary with revenue, top clients, growth vs last year
- →Monthly digest: what changed and why it matters
- →Actionable suggestions. Not just charts, actual next steps.
Gets smarter the longer you use it. After 3 months, recommendations are tailored to your patterns.
Pro Plan onlySee what's included in Pro
Simple, transparent pricing
No hidden fees, no surprises.
Starter
Free
- 5 invoices per month
- Basic dashboard
- PDF export
- Secure backend sync
- 'Powered by Assist4Biz' footer
No credit card required
Most Popular
Growth
€12/month
- Unlimited invoices
- Up to 2 users
- Full dashboard suite
- Monthly DATEV export
- White-label invoices
- Email support
Pro
€24/month
- Everything in Growth
- Priority support
- AI Monthly Digest
- AI Annual Report
Template can be changed only once after delivery
| Starter | Growth | Pro | |
|---|---|---|---|
| Invoices / month | 5 | Unlimited | Unlimited |
| Dashboard | Basic | Full suite | Full suite |
| PDF export | |||
| Backend sync | |||
| Users | 1 | 2 | 5 |
| DATEV export | — | ||
| White-label invoices | — | ||
| Email support | — | ||
| Priority support | — | — | |
| AI Monthly Digest | — | — | |
| AI Annual Report | — | — | |
| Custom invoice template | — | — | ⚠ |
| 'Powered by' footer | ~ | — | — |
Trusted by growing businesses
Real customers. Real results.
“An invoice for an existing customer takes me one minute now. It used to take much longer. But the best part is the dashboard and the AI report: it shows me exactly where my business stands and keeps me motivated to stay on top of things. Accounting doesn't stress me out anymore.”
“Invoicing is fast but that's not even the best part. The dashboards actually tell me what's happening in my business. I make better decisions now because I can see the numbers clearly.”
Built by professionals with 30 years of software experience.
No vibe coders. No shortcuts.
We sell software, not data.
Your data is yours. Always.
Hosted in Germany.
Your data never leaves the EU. Servers in Germany, GDPR compliant.
Frequently Asked Questions
Yes, the Starter plan is free. Up to 5 invoices per month, no time limit.
No credit card is required for the Starter plan. Just sign up and start sending invoices.
Yes. It runs in your mobile browser. No app download, no updates to manage.
The app is available in English, Spanish, and German.
Yes, you can upgrade or downgrade your plan at any time from your account settings.
All data is encrypted in transit and at rest. We are fully GDPR compliant.
Yes. Growth and Pro users receive a monthly email with all invoice PDFs in a ZIP file and a DATEV-ready CSV summary - just forward it to your accountant. No manual exports needed.
Yes, all plans include one-click PDF export for every invoice.
Yes. All plans include ZUGFeRD-compliant PDF invoices.
No. Assist4Biz runs entirely in your browser. Open it on your phone, tablet or laptop - nothing to install.
Run your business like you mean it.
Be among the first 50 businesses. First 2 months completely free.
No credit card needed · Cancel anytime