Your business is unique. So is your system.
Stellax builds custom systems for companies: personalized software, built around your process, with AI on WhatsApp, finance and tax wired together from day one.
What is your business?
Pick yours and see a real example. Each one starts from a ready-made base and becomes a system built your way.
Health
Retail and services
Industry and farming
Management and AI
TradeasyAX
Live markets and news, a trading bot with an open scoreboard and a grade for your trading
Open siteTrading involves risk of loss. Past results do not guarantee returns.
Not seeing your industry?
We build custom systems for any operation, from scratch or from the closest ready-made base.
Software that's generic costs you in three different ways.
It costs you what you don't use
Dozens of features for people who use half a dozen. You pay for what's left over and still miss what matters — because nobody thought about your process.
The system is built around your process, with no unused modules.
It costs you in parallel tools
Calendar in Google. Tracking in spreadsheets. Invoices in another portal. WhatsApp by hand. Every new customer, one more copy-paste.
Scheduling, finance, tax and WhatsApp in the same system.
It costs you in support that never answers
A transaction stuck at 5:45 pm. Friday. You open a ticket. The answer: 'up to 72 business hours'. The customer walked out. Pray for Monday.
Human support on WhatsApp, from the people who wrote the code.
Your company doesn't need yet another generic system. It needs a technology partner.
How Stellax builds your custom system, with artificial intelligence and tailored consulting — in 2 minutes.
Four decisions that make a difference.
AI that delivers — not AI as decoration
AI reads documents, fills in records and sums up the day while your team works. Maya answers your customers on WhatsApp while you sleep. If one AI provider goes down, another takes over instantly — service never stops.
Brazilian LGPD data protection, taken seriously down to the database
Each company is isolated at the database level: yours can't see your neighbor's data, not even there. Passwords and secrets are stored encrypted. It's not marketing: it's how the database was built.
Growing? The system keeps up — no switching tools.
You started alone, then hired a team. One unit became three. Volume doubled. You add users, branches and movement without migrating, without export/import, without losing history. Same database, same engine — just bigger.
Invoicing ready to test. Production with the A1 certificate.
NF-e, NFC-e and NFS-e ready to test in training mode — invoices with a SEFAZ-standard key, no tax value and nothing sent to SEFAZ until the A1 certificate is in. You run the system from day one and switch on transmission whenever you want.
Maya handles your customer while you sleep.
A 24/7 WhatsApp attendant that understands your business, answers customers, clears up questions and books into your calendar. You only step in when needed.
- ✓If one AI provider goes down, another takes over — service never stops
- ✓Learns your business — speaks the way your customers understand
- ✓Hands the conversation over to you when a person is needed
- ✓Full history of every conversation
From the operation to your hand.
The owner's app isn't the system squeezed onto a phone — it's another tool with a single job: show the company's real numbers, right now. Between one meeting and the next, you see where things are stuck and decide on the spot.
- ✓Revenue, P&L, daily balance and cash forecast on one screen
- ✓A phone alert when something needs you
- ✓The operation stays on the desktop — the app is just for decision-makers
The system that doesn't exist yet? We build it.
Every Stellax system is born the same way: a real problem, a real customer, a personalized system built on top of it. When your process doesn't fit generic software, we build yours — from the flow to the screen, with AI, WhatsApp, tax and finance already in place underneath.
- ✓A product that is yours, not a generic template with touch-ups
- ✓You follow along in deliveries — use each part as soon as it is delivered
- ✓Hosted, monitored and supported by the people who wrote the code
Connects to what you already use.
Companies that already chose to get organized and grow.
Technology only makes sense when it simplifies the routine of the people on the front line. That is why every rollout starts from the company's real process.
From your process to the first screens in the first week.
You tell us your process
Tell us how your operation works today, over WhatsApp. The team designs your custom system and sends the proposal.
We build around it
The ready-made base — AI, WhatsApp, finance and tax — is already in place. Whatever is unique to your process, the team writes from scratch, and the first screens usually go live in the first week.
You operate
First sale, service call, order or work order. The rest arrives in deliveries, and human support on WhatsApp answers in minutes — not in 72 business hours.
Your system is one of a kind. So is the quote.
Every operation has its own size and its own way of working. Tell us how yours works and we'll put the proposal together on WhatsApp, with the people who build it, not a sales bot.
- ✓A custom system for your process — no extra modules you won't use
- ✓AI and WhatsApp set up for your customer service, scheduling or billing
- ✓Owner's finance on the phone: P&L, daily balance and forecast
- ✓Tax in training mode: NF-e, NFC-e and NFS-e — real invoices with an A1 certificate
- ✓Unlimited users on the same system
- ✓Human support on WhatsApp
No lock-in · Cancel anytime
The questions you were going to ask anyway.
How much does it cost?+
It depends on the size and shape of your operation — each system is built for the company. Message us on WhatsApp, tell us how you work today and we will send a proposal. No hidden setup fee and no lock-in.
How long until I'm productive?+
The first screens usually go live in the first week, and the team starts using them as soon as they arrive. The rest comes in deliveries while you keep selling or serving customers.
Do you build custom systems?+
We do — it's what Stellax does: custom software for companies of any size. You tell us the process, we design and build the system your way, on top of the AI, WhatsApp, tax, finance and reporting base we already have ready, which shortens the road a lot. The project ships in deliveries: the first screens usually go live in the first week.
Will I need to hire IT to roll it out?+
No. It's hosted software, nothing to install: the team sets up your account and you open it in the browser. Import a CSV spreadsheet if you want to bring old data — we do it with you, at no cost. WhatsApp support in minutes.
And my data? Who has access?+
You and the people you register. Each company is isolated at the database level — yours can't see your neighbor's data, not even there. Passwords and secrets are stored encrypted, and the Stellax team only accesses what's needed for support and maintenance.
If I cancel, do I lose my data?+
No. The data is yours: if you leave, our team hands you a complete copy in spreadsheet and open-file formats — records, sales, finance, invoices, everything. No hostages.
Is the AI just ChatGPT in a costume?+
No. Stellax uses a queue of several AI models: if one goes down, the next takes over without you noticing. For you, far less chance of the AI stopping.
Do I need a digital certificate to issue e-invoices?+
For real production, yes: an A1 digital certificate, issued by a certificate authority. To test in training mode (invoices with no fiscal value, not sent to SEFAZ), you don't need one. You use the full system from day 1 and turn on transmission whenever you want.
Is there a mobile app?+
Yes, in two layers. The full system opens in the phone's browser and can be installed as a home-screen shortcut — the team uses it that way. And for the owner or manager there is the Stellax App, already published on the App Store: an app with the management reports only (revenue, P&L, daily balance, forecast) that also pings your phone when something needs you. Just search “Stellax” in the store — included for existing Stellax clients.
Your system should keep up with your business.
Tell us what is blocking your operation. We answer on WhatsApp and show the simplest path.