FROM $25,000 · FIXED PRICE ON A BLUEPRINT SCOPE

Production apps with AI inside. Live in weeks, at a fixed price.

b7dev is a senior software studio from Uruguay. Two principal engineers lead every build with AI tools and a vetted team, so you get senior architecture at startup speed.

WORKING US AND EUROPEAN HOURS · ENGLISH, ESPAÑOL, DEUTSCH
ENGINEERED BY B7DEV FOR —
Vicentius AppsClementina EnterprisesGemini CommunicationsMcMoy
SINCE
2011
CLIENTS IN
20+ countries
PRODUCTION PRODUCTS
10+

Three ways to start

Pricing →

From idea to live product in four steps.

  1. 1
    WEEKS 0–2

    Blueprint

    Scope, architecture, fixed quote.

  2. 2
    WEEKS 2–8

    Build

    Weekly demos, working software every week.

  3. 3
    LAUNCH

    Launch

    App stores, monitoring, handover docs.

  4. 4
    AFTER

    Care

    We stay on call while you grow.

REVIEW · CHECKOUT RETRY EXAMPLE
AI drafts. A senior reviews.draft retry the payment if it times outdraft log every failed attemptsenior retry only if the charge never went throughdraft add a test for double charges Reviewer: a timeout doesn’t mean it failed.

Two principals. The output of a team of six.

We write code with AI tools every day, under senior review. AI writes the first draft; engineers own every decision, every review and every line that reaches production. You get the speed of AI with the judgment of people who have shipped this before.

How we work →
Portrait of Chaim Sajnovsky
“Five years in broadcast technology, then eighteen building software. I have architected AI matching engines, monitoring SaaS, live-video marketplaces and consumer apps for companies in the US, UK and Europe. Every b7dev project starts on a call with me.”
Chaim Sajnovsky, founder and principal architect.

Live right now

Products we engineered, and where each one stands today.

Myngly LIVE
FOR VICENTIUS APPS, LLC
CleverQA LIVE
FOR CLEMENTINA ENTERPRISES, LLC
Peaceful Parent LIVE
FOR GEMINI COMMUNICATIONS, LLC
Fiesta! Pic Challenges STORE LAUNCH
FOR CLEMENTINA ENTERPRISES, LLC
Secure LIVE IN THE STORES
FOR MCMOY LLC
RaveBae BETA IN DALLAS
FOR RAVEBAE

FAQ

Do I own the code?

Yes. Code is delivered after full payment. On longer projects, code can be delivered against monthly payments.

How do you use AI without risking my code?

We use business-tier AI tools whose terms exclude training on your code, and a human reviews every change before it merges.

What if my scope changes?

It will. Changes are quoted as small add-on sprints, never silently absorbed or billed later.

Can you take over an existing app?

Yes. That is what the App Rescue Audit is for.

What happens after launch?

Launch Care keeps monitoring, fixes and small features running for a monthly fee, or we hand over to your team with full docs.

Tell us what you are building.

20 minutes, no slides, an honest opinion even if you don't hire us.

Book a 20-min call