upsunday

Custom software development

Custom software your team and customers actually enjoy using

We design and build custom web applications: SaaS products, client portals, dashboards, internal tools and AI features. Product design and engineering happen in one team, so what gets designed is what gets shipped.

See the work
3D code window with orange brackets

What's included

Everything it takes, designed and built under one roof

  • Web applications

    Product

    Browser-based apps with accounts, roles, data and the workflows your business runs on.

  • SaaS products

    MVP to scale

    From a focused first version to a product ready for paying customers, with room to grow.

  • Client portals

    Self-serve

    Secure places for customers to log in, track work, share files and get answers without an email chain.

  • Dashboards and internal tools

    Operations

    Clear views of the numbers and queues your team checks every day, replacing fragile spreadsheets.

  • AI features and agents

    LLM integration

    Assistants, search, summarization and agent workflows built on your own data with sensible guardrails.

  • APIs and integrations

    Systems

    Connections to payments, CRMs, analytics and the tools you already pay for.

  • Product design

    UX and UI

    Flows, prototypes and interface systems tested with real users before they are built.

How we work

A clear process, with work to review every week

  1. 01

    Discover

    Users, jobs to be done and constraints, turned into a scoped first release.

  2. 02

    Prototype

    Clickable flows that answer the risky questions before engineering starts.

  3. 03

    Build

    Short cycles with working software every week, reviewed together.

  4. 04

    Launch

    Testing, monitoring and a careful rollout to real users.

  5. 05

    Iterate

    Measure, learn and improve based on how people actually use it.

FAQ

Software Development: common questions

  • What kind of software do you build?

    Web-based software: SaaS products, customer and client portals, dashboards, internal tools, booking and ordering flows, and AI-powered features. If it runs in a browser and needs thoughtful design as much as solid engineering, it is a good fit.

  • Can you add AI features to our product?

    Yes. We build assistants, semantic search, summarization, content generation and agent workflows on top of leading language models, connected to your own data. We start by finding where AI saves real time for your users, then design the guardrails and review steps around it.

  • Can you build an MVP?

    Yes. We help you cut the first release down to what proves the idea, design it properly, and build it on a foundation that does not need to be thrown away when it works.

  • What drives the cost of custom software?

    The number of user roles and workflows, the complexity of data and integrations, security and compliance needs, AI features, and how polished the first release must be. We scope in phases so you can invest in steps rather than all at once.

  • Do you design the product as well as build it?

    Yes. Product design and engineering are one team here, which means fewer handoff gaps and an interface that matches your brand and website.

Further reading

Guides from the studio on software development done well

More services

One team for brand, web, software and motion

Contact

Let's talkabout something yours

project@upsunday.co