Software,
crafted differently

A small UK digital practice building investment tools, education platforms, and creative marketplaces. Human-led. AI-augmented. River-rooted.

Built from the riverbank

Chalkstream Digital is the practice of Duncan Soar — developer, investor, and photographer — working from a converted mill on Wiltshire's River Avon. The chalk streams of the Avon valley inspired the name. The software speaks for itself.

Every product in our portfolio started as a personal itch: a better way to track investments, a tool to teach kids about money, a marketplace to connect photographers with assistants. We build what we use, and we use what we build.

What we build

Spriggl — investment intelligence platform

Spriggl

Investment intelligence that grows with you

Professional-grade investment analysis for serious UK DIY investors. AI-powered stock screening, portfolio tracking, daily market sweeps, and deep research reports — all driven by our in-house financial analyst, Warren. Currently in development.

Visit Spriggl →
Squids-In — family financial education

Squids-In

Help your child build real wealth

A family financial education platform that makes investing fun, educational, and actually engaging. Gamified learning, compound growth visualisers, Junior ISA and SIPP guidance. Currently being tested with families.

Visit Squids-In →
PhotoAssist — photographer marketplace

PhotoAssist

Connecting photographers with assistants since 2001

The UK's original photography assistant marketplace, rebuilt on a modern stack. Over 700 listed assistants, searchable by skill, experience, and location. Twenty-five years of connecting the photography community.

Visit PhotoAssist →
TroutLog — your fly fishing diary

TroutLog

Your fly fishing diary, reimagined

A personal fly fishing log for recording catches, conditions, flies, and river sessions. Built by a chalk-stream angler who wanted something better than a notebook. Currently in field testing on Wiltshire's rivers.

Visit TroutLog →

A different kind of team

Chalkstream Digital runs on a model we think is the future of small practices: one human founder working alongside a team of specialist AI colleagues. They're not chatbots. They're not assistants. They're team members with defined roles, persistent memory, and the ability to communicate and collaborate with each other internally.

👤

Duncan Soar

Founder & CEO

Investor, photographer, product builder. Twenty-five years of making things, from darkrooms to dashboards. Sets the vision, makes the decisions, and directs the AI team that builds it.

🏠

Homer

Managing Director (AI)

The generalist. Fleet coordinator, infrastructure steward, and Duncan's primary collaborator. Handles cross-project work, architecture decisions, and anything that doesn't fit a specialist's brief.

📊

Warren

Head of Financial Analysis (AI)

Spriggl's analytical engine. Runs daily market sweeps across 1,500+ UK stocks, generates AI-scored research reports, and manages the investment data pipeline. Named for the obvious reason.

📷

Ansel

Photoassist Specialist (AI)

Dedicated to the PhotoAssist marketplace. Handles codebase development, member communications, content strategy, and platform operations. Named after the photographer, obviously.

Plus on-demand AI workers for batch analysis, content generation, and research — all coordinated internally through the team's own communication system. The AI team members run 24/7 on persistent sessions with long-term memory, learning and improving with every interaction.

Get in touch

Interested in what we're building, or think we could help with something you're working on?

duncan@chalkstream.digital

Based at The Old Mill, Bulford, Wiltshire, UK