Custom software and AI agent development for product teams

Square63 builds products, gets AI agents ready for real users, and stabilizes MVPs that have outgrown their code.

UVOHealth telemedicine platform
YipSMS SMS marketing dashboard
99.9%uptime for UVOHealth

Building for companies in the US, UK, Australia and Canada since 2011

  • UVOHealth
  • YipSMS
  • WhizTutor
  • Yoga Team
  • SherpaPrep
  • Phillip Jeffries

Where is your product right now?

Each stage has a service with a set scope and a typical duration.

  1. Idea

    You have an idea for a product or an AI feature, but no scoped first project.

    Discovery sprint
  2. Prototype

    Your agent works in demos and you need to know how it holds up before real users see it.

    AI agent audit
  3. Build

    You need a product built and shipped.

    Custom softwareAI products and agents
  4. Live

    The MVP has customers and the code is holding it back.

    MVP stabilization
  5. Growing

    The product works and you need more engineers on it.

    Dedicated engineers

Six services, each with a set scope

Every engagement is quoted in writing before it starts, and ends with something you keep.

See all six

Not sure which one fits?

Tell us what exists today, who uses it and what you want to be different. We’ll reply with the service we’d start with.

Results from client projects

UVOHealth

HIPAA-compliant telemedicine that runs in the browser

  • Ruby on Rails
  • Amazon Chime
  • AWS
99.9%uptime for video consultations, a virtual waiting room and EMR integrations
Read the case study
YipSMS

SMS recovery flows that keep working during flash sales

  • Node.js
  • Redis
  • PostgreSQL
  • Shopify API
97%deliverability, and an average 5x return on SMS spend for merchants
Read the case study
ESTA Visa

Automated screening for US visa-waiver applications

  • Ruby on Rails
  • PostgreSQL
  • Stripe
−20%application errors, with processing that averages under 30 minutes
Read the case study
WhizTutor

A tutoring marketplace on iOS, Android and web

  • React Native
  • Ruby on Rails
  • Stripe
4.8/5average app rating. The company went through the Techstars accelerator.
Read the case study

How we run a project

  • Scope agreed in writingThe outcome, the timeline and what counts as done are written down before any work starts.
  • A demo every weekYou review working software on a real environment every week.
  • Senior engineers on the workThe people who scope your project write the code and are accountable for it.
  • You own everythingCode, infrastructure and documentation sit in your accounts from the first day.
  • AI where it helpsWe build AI systems, and we tell you when a scheduled job or a SaaS tool is the better answer.

Production software for product teams, since 2011

See all case studies
2011
The year we started, in Lahore
4
Client markets: US, UK, Australia and Canada
12
Case studies you can read on this site

What we build with

The stack behind the projects above.

  • Ruby on RailsWeb applications
  • ReactInterfaces
  • React NativeiOS and Android
  • Node.jsServices
  • PostgreSQLData
  • RedisQueues and caching
  • AWSInfrastructure
  • StripePayments
  • ShopifyCommerce integrations

Tell us what you’re building

Pick what you need and leave your email. Here is what happens next.

  1. We replyWith questions, or a time for a call.
  2. You get a written scope and quoteThe outcome, the timeline and what counts as done.
  3. Work startsWith a demo on a real environment every week.

hello@square63.com · +1 (415) 343-5403

What do you need?

Step 1 of 2. Pick one and we’ll ask for your name and email.