Development

Software that listens and responds.

MVN Development builds artificial intelligence products that hear a message, a recording or a spoken answer and send back useful feedback right away. Made in Natal, Brazil, and used by students, job seekers and small businesses.

Talk to MVN See the products

Sonora screen with feedback on an A minor pentatonic exercise: overall score 76, scores per criterion, time-stamped passages and the next step.
Trampeiro on a phone during a voice interview with the AI interviewer Gabi, showing the conversation transcript in Portuguese.
Since 2024
registered Brazilian company
Natal, Brazil
where our team and office are
LGPD
data handled under Brazilian law, no tracking
3 products
live and in operation

What we build

Three products of our own in operation, plus made-to-order projects for businesses.

AI agents on WhatsApp

First-line customer service for small businesses, in the owner’s own tone.

The agent answers right away, at any hour. It answers questions from the business’s knowledge base (products, list prices, lead times and terms), understands text and voice messages, asks for what a quote needs and hands the conversation to a person with a ready summary.

How a conversation goes

  1. The customer writes or sends a voice messageOn the business’s own WhatsApp, at any hour.
  2. The agent answers from the business’s knowledge baseIt clears up questions and asks only for what the quote still needs.
  3. A person takes over with a ready summaryThe owner gets who it is, what they want and what is left to decide.

What the agent never does

  • Negotiate or give discounts
  • Close a sale or give a final price
  • Make up what is not in the knowledge base
  • Seasonal notices that expire on their own date
  • Automated tests before every content change
  • Costs tracked customer by customer
I want an agent for my business
Carla’s CakesVirtual assistant
  1. Today
  2. Hi! Do you make cakes for 20 people?
  3. 0:14
  4. We do! I heard your voice message: it’s for Saturday, with chocolate fudge filling. The 20-slice cake starts at R$ 140 on our price list. Would you rather pick it up or have it delivered?
  5. Delivered, please. I’m in Ponta Negra.
  6. Noted. I’ll pass this to Carla to confirm the date and the delivery fee. She’ll message you shortly.
  7. Conversation handed over to Carla

Summary Carla receives

Customer
Júlia, Ponta Negra
Order
Cake for 20 people, chocolate fudge filling
When
Saturday, home delivery
Price list
From R$ 140
To decide
Confirm date and delivery fee

Sonora

AI feedback for music students.

Students record an exercise on their phone or in the browser and get a score per criterion, time-stamped passages to work on and the next step. Teachers create exercises, correct the AI’s assessment and follow each student.

Discover Sonora playsonora.com

Sonora screen with feedback on an A minor pentatonic exercise: overall score 76, scores per criterion, time-stamped passages and the next step.
6
instruments: acoustic and electric guitar, piano, bass, violin, voice and drums
4
languages: Portuguese, English, Spanish and French
Teachers
in control: they review and correct what the AI said
Trampeiro on a phone during a voice interview with the AI interviewer Gabi, showing the conversation transcript in Portuguese.

Trampeiro

AI job interview practice.

A voice conversation of up to 10 minutes, built from the job posting and your résumé, with a live transcript on screen. At the end, concrete feedback and a review of every attempt. Available in Portuguese.

10 min
voice interview, with the clock always in view
Free
first interview, no card needed
BRL 19.90
for a pack of five interviews

Practice on Trampeiro trampeiro.com

Custom software

For businesses that need a system that does not exist yet.

The same team that builds and runs our own products builds for other businesses.

Ask for a quote
  • Web systems and appsFrom design to launch, with automated tests.
  • IntegrationsWe connect what you already use: WhatsApp, payments, spreadsheets and internal systems.
  • Hosting and operationsWe keep it online, with monitoring and tracked costs.
  • Consulting and supportHelp choosing, reviewing or fixing a business’s technology.

How we work

AI that serves people needs clear rules. These apply to everything we build.

Get in touch

Quotes, partnerships or any question about your data: write to our email. The MVN team will answer.

contato@mvndevelopment.com