VeriFACTU quotes and invoices in minutes — your whole business in one place.
ZENNO is the all-in-one CRM for installers and small businesses in Spain. Capture the lead, send the quote, win the deal, do the work, and issue a compliant invoice — all in one place, without jumping between spreadsheets, WhatsApp and your accountant.
20-minute demo · no commitment
Try it free for a month
Built for the way you actually work:
Half your business lives in WhatsApp, the other half in Excel.
A lead in WhatsApp, a quote in Word, an invoice in Excel, and no idea which deals are actually moving. It works, until it doesn’t.
Leads slip through the cracks
A missed call or a note on paper, and a real job quietly disappears. No pipeline, no follow-up, no visibility.
Quotes and invoices live in Excel
Copy-paste the last file, change the numbers, hope the VAT is right. One template breaks and the whole month is a mess.
VeriFACTU now has a deadline
Spain’s anti-fraud invoicing rules arrive for everyone — companies on 1 January 2027, autónomos on 1 July 2027 — and they demand certified, chained, traceable records. Excel simply can’t do that.
No clear picture of the money
Who owes you? What did you invoice this quarter? Which clients recur? The answers are buried across five files.
Quarter-end: the invoice hunt
Last day of the trimestre, and you’re digging through email, the van and a dozen folders to round up every invoice for your gestor. Four times a year, the same scramble.
Nobody knows what’s in stock
What’s on hand, what’s already spoken for, and what still needs ordering — nobody’s sure. So the job waits, sometimes for days, on a part that was sitting in the yard the whole time.
Your entire back office, in one place.
ZENNO replaces the pile of spreadsheets and disconnected tools with one system built for installers and small businesses.
Leads & deal pipeline
Leads, clients and agents in one place, with a visual pipeline, activities and lead-to-client conversion tracking.
Quotes
Line-item estimates with per-item IVA, professional branded PDFs, and one-click conversion into an invoice.
Invoices & VeriFACTU
Proforma, definitive and refund invoices, sequential numbering, QR codes and automatic AEAT submission.
Digital signatures
Send any PDF for signature — by link, WhatsApp or on the spot — and your client signs on screen with a finger. Each signature is timestamped with date and IP, tied to the deal.
Contracts & SEPA
Recurring contracts and subscriptions with SEPA direct-debit batches for maintenance plans and monthly service.
Purchases & IRPF
Register supplier invoices with IVA and IRPF withholding, attach the scan, and keep your expenses tidy.
Bank reconciliation
Import bank movements by CSV and match them to invoices and purchases so you know what’s really been paid.
Financial reports
Cash-flow, revenue vs. expenses, outstanding receivables and recurring revenue — quarter by quarter, at a glance.
Assets & delivery notes
Track equipment you install, rent or own, and issue albaranes tied to the job.
Your gestoría will thank you
Upload every purchase invoice the moment it arrives — stored and organised, nothing to hunt down at month-end. And when it’s time to close, export all your invoices in one click and send them to your asesoría. Fast and efficient.
From first contact to paid invoice.
Lead, quote, job, invoice — with nothing lost in between.
- 01
Capture the lead
Log every prospect with contact, address and source. Assign it to an agent and never lose track of a job again.
- 02
Send the quote
Build a clean, branded quote in minutes — line items, per-item IVA, your logo — then turn it into an invoice the moment it’s accepted.
- 03
Win the deal
Follow up on the quote, log calls and site visits, and move the deal forward — so you always know who’s about to say yes.
- 04
Do the work
Plan the visit, keep the job moving, and record what’s done on site — hours, materials and delivery notes — all tied to the deal, so nothing is lost between quote and invoice.
- 05
Invoice with VeriFACTU
Issue a compliant factura: chained, hashed, QR-coded and sent to the AEAT automatically. Legal, traceable, done.
Be compliant without becoming a tax expert.
VeriFACTU is Spain’s anti-fraud invoicing standard. Every invoice must be recorded, hash-chained and traceable by the AEAT. ZENNO handles all of it silently in the background — you just press "issue".
- Chained & hashed records
- Each invoice is registered and cryptographically chained (SHA-256) to the previous one, exactly as the regulation requires.
- Automatic AEAT submission
- Records are sent to the tax authority over the official SOAP web service — and retried automatically if something fails.
- QR on every invoice
- Each factura carries a verification QR linking to the AEAT, so your clients and inspectors can validate it instantly.
- Your certificate, your control
- Upload your digital certificate once. ZENNO signs and submits; you keep full visibility of every response and incident.
Set by Real Decreto-ley 15/2025. Invoicing with non-compliant software risks fines of up to €50,000 — and you can issue VeriFACTU invoices voluntarily today. Switch early, switch calmly.
ZENNO carries the declaración responsable required by Real Decreto 1007/2023 — invoicing software officially compliant with the AEAT requirements.
No spreadsheets. No plugins. No last-minute panic.
Built around how your business actually runs.
Construction, solar, HVAC, electricians, IT services — or a one-person autónomo just starting out.
Bill a long job in stages, not in chaos
You invoice a reform as it progresses. ZENNO tracks each certificación, keeps the approved budget separate from the extras, and issues every phase with the right IVA — a 3-month job never loses a euro.
The install pays once. Maintenance pays every year.
Quote the system, and the accepted deal becomes an asset register of the panels and inverter. The annual maintenance then bills itself by SEPA — recurring income with zero admin.
Turn one install into every-season revenue
Close the install, attach a service contract, and ZENNO issues the maintenance invoice and albarán each season on its own. One job becomes a client for years.
Ten jobs a day, invoiced before you leave
Quote on-site from your phone, turn it into a VeriFACTU-compliant factura before you’ve packed the van, and stop losing evenings to paperwork. Fast in, paid faster.
Your revenue is renewals — so protect them
Keep every client’s devices and support contracts in one place, bill monthly by SEPA, and see at a glance who’s up for renewal. Built for informáticos and mantenimiento.
The simplest way to start doing it properly
One person, no gestor headache. Make a quote, send a factura — now VeriFACTU-legal from day one, with your clients and money finally in one place. The easiest first step off manual invoicing.
A gentle step up — with none of the chaos left behind.
If you invoice in spreadsheets today, ZENNO feels familiar on day one. You keep the simplicity of "make a quote, send an invoice" and gain everything a spreadsheet could never give you.
Everything you like about your spreadsheets
- Fast, simple quotes and invoices
- Your own products and prices
- Full control over each document
- Clean, branded PDF output
Plus what spreadsheets can’t do
- VeriFACTU compliance, automatic
- Every lead, deal and client tracked
- IVA & IRPF calculated for you
- Cash-flow and receivables at a glance
One plan. One price. Everything included.
No per-user fees, no feature tiers, no surprises. Just the whole platform for one flat monthly price.
ZENNO CRM
Try it free for a monthFlat price for your whole company · VAT included
No lock-in · cancel anytime · no setup fee
Request a demoSee it on your own numbers — a 20-minute demo, no commitment.
Everything in ZENNO:
- Leads, deals & full CRM pipeline
- Quotes with branded PDFs
- VeriFACTU-compliant invoicing
- Automatic AEAT submission & QR codes
- Digital signatures with audit trail
- Recurring contracts & SEPA direct debit
- Purchase invoices with IVA & IRPF
- Bank reconciliation & cash-flow reports
- Unlimited users & role permissions
Made in Torrevieja, for businesses across Spain.
ZENNO is built by VSTECH S.L., a small company in Torrevieja. We first built it to run our own business — it made life so much easier that we decided to open it up and share it with other local businesses.
- Local, not anonymous
- We’re in Torrevieja (Alicante), not a faceless SaaS overseas. Real people, same time zone, same market, same rules.
- Support in your language
- Spanish, English or Russian — talk to us in whichever is easiest. No ticket queues in a language you don’t speak.
- Small, like you
- When you write to us, you reach the people who actually build ZENNO. Feedback becomes features, fast.
Everything you’re probably wondering.
What exactly is VeriFACTU, and does ZENNO cover it?
When does VeriFACTU become mandatory?
I invoice in Excel today. Is switching hard?
Is €39.90 per user or for the whole company?
Is it really for my business — construction, solar, HVAC?
Do I need my own digital certificate?
Where is my data stored?
Can I try it before paying?
See what ZENNO can do for your business.
Book a personal demo. We’ll walk you through the whole process — from lead to a live VeriFACTU invoice — with your kind of jobs and numbers.
20-minute demo · no commitment
- Leads, deals & full CRM pipeline
- Quotes with branded PDFs
- VeriFACTU-compliant invoicing
- Automatic AEAT submission & QR codes
Thank you!
We’ve got your request and will be in touch very soon to arrange your demo.