Skip to content
Português

Websites · Automation · API integrations

Fast websites and handy automations for small businesses

We build sites that open in a blink on any phone, Python scripts that take repetitive work off your plate, and integrations that get your tools talking to each other. You see a preview before you commit.

Email us See pricing

We build with AI — that's how we deliver fast and affordable.

What we do

Three things, done well

Fast websites

A clean site for your business that works on every phone: what you do, prices, opening hours, a map and a contact button.

  • Loads quickly even on a weak mobile connection
  • Readable, accessible and easy for search engines to understand
  • Your own domain, registered in your name

Python automations

Scripts that take over the repetitive part of the job, on a schedule or with a single click.

  • Reports, spreadsheets and files generated for you
  • Alerts by e-mail or Telegram when something changes
  • A log of what ran, so nothing fails silently

API integrations

Connect the tools you already use, so data flows between them without copy and paste.

  • Payments, forms, spreadsheets, open government data
  • Handles rate limits, retries and errors
  • Documented, so anyone can maintain it

How it works

You see it working before you decide

  1. Tell us what you need

    A few lines to contato@ondahq.com about your business or the task are enough. Sometimes we write first, with a preview already made for you.

  2. Get a preview

    We build a working preview: a draft of your website, or the automation running on sample data. It's free and there's no commitment.

  3. Decide

    Like it? We finish it with your texts, photos and prices and put it online. Not for you? No problem: the preview comes down.

  4. We keep it running

    Hosting, security and small changes every month, so your site stays current without you thinking about it.

Transparency

We build with AI

That's how we deliver fast and affordable. AI helps us write, test and check the work, so a small business can get a good website or a useful automation without agency prices or weeks of waiting.

  • Every site is checked at phone, tablet and desktop widths, for contrast and keyboard use
  • Automations come with tests and plain instructions
  • Want to know whether you're talking to a person or an AI? Just ask. We'll always tell you.

Pricing

Simple reference prices

The exact price depends on what you need, and you get it in writing before you commit.

Website

from US$350 one-time

  • Design and build of your site
  • Your texts, photos, prices and hours
  • Contact or WhatsApp button
  • Your domain connected

Hosting & tweaks

from US$39 per month

  • Hosting and HTTPS
  • Small changes: a price, a photo, a paragraph
  • We keep it online and up to date

Automations & integrations

Quoted per project

  • Describe the task in a few lines
  • We reply with a quote and, when possible, a short demo
  • Delivered with instructions to run it

Domain registration is paid to the registrar and stays in your name.

Portfolio

Sample projects

Demo projects we built to show the kind of work we do. Each one is marked as a demo: none of them was made for a client.

Top of the Mesa Limpa Contabilidade landing page: headline, WhatsApp button and a monthly summary card with an 'up to date' stamp.

Demo · fictional company

Landing page for an accounting firm

Sales page for an accounting office that serves small businesses: services, plans with prices, FAQ and WhatsApp contact. Responsive from 320 to 1440 px, light and dark themes, AA contrast, 83 KB in total.

HTML · CSS · JavaScript · SEO

Public tender alert: a sample notification card, counters of publications read and matched, and a table of tenders with city, object, estimated value and deadline.

Demo · real public data

Public tender alerts

Python monitor for the API of Brazil's national public procurement portal (PNCP). Filters by keyword, state, city and value, never repeats an alert, and sends what's new by Telegram or e-mail with a spreadsheet. 72 automated tests.

Python · API · SQLite · Excel

Batch payment generator: confirmation that the file was generated and re-read, and a preview table of six sample payments by Pix and wire transfer.

Demo · not certified by the bank

Batch payment file generator (CNAB 240)

Turns a payment spreadsheet into the CNAB 240 file that Brazilian internet banking accepts for batch Pix and wire transfers. Validates every field, shows a readable preview and re-reads the file before download. Runs entirely in the browser.

JavaScript · validation · 64 tests

The screenshots are in Portuguese because these demos were made for Brazilian businesses.

Questions

Good to know

Do I need to have anything ready?

No. A few lines about your business are enough to start. For the final site we use your texts, photos and prices, and we can help you write them.

Who owns the domain?

You do. It's registered in your name; we just point it to your site.

What does the monthly fee cover?

Hosting, HTTPS and small changes, like new prices, opening hours, a photo or a paragraph. Bigger changes get their own quote first.

How do we talk?

By e-mail, in English or Portuguese. Everything stays in writing, so you always have a record of what was agreed.

Do you work outside Brazil?

Yes. We work with small businesses anywhere.

Let's talk

Tell us about your business and what you need. English or Portuguese.

contato@ondahq.com