How a SaaS founder built and monetised a side project without distraction

Executive overview

Most founders struggle to focus on the handful of tasks that actually move their business forward. The solution here is Flow — a digital index card app built to surface daily needle movers and get founders into flow state.

Built as a deliberate side quest with strict constraints: no VC, no coding, 0.001% of available time. The result was a product that reached revenue while leaving the core business untouched.

Building for yourself first, with tight guardrails, is the fastest path from idea to paying customers.

Identifying the gap

• Founders across coaching programs consistently reported feeling overwhelmed and unable to prioritise daily work
• The core problem: an endless task list with no clear way to identify the three things that actually matter today
• Marc Andreessen's index card habit — three needle movers written each morning — inspired the product concept
• As the business scaled, even a physical index card became insufficient; that friction became the product idea

The Flow product

• Core feature: a digital hit list of daily tasks, styled as an index card, designed to focus attention on needle movers
• Task prioritisation matrix: urgent and important, urgent but not important, fun — lets users sort rather than just list
• "Let tomorrow you handle this" feature rolls incomplete non-urgent tasks forward automatically
• Plan of attack: break any task into subtasks with strategy notes, inspired by Tony Robbins chunking method
• Ambient sound modes (fireplace, coffee shop, alpha waves) to support deep work sessions
• Weekly and monthly reflections capture goals, wins, and gratitude — building longitudinal context about the user

Meaningful AI features

• MCP server connects Flow to Claude Code agents: agents can read context, add tasks, update plans of attack, and mark who owns what
• AI performance coach generates a weekly coaching report based on tasks completed and reflections written
• Chat interface lets users query the coach directly, with pre-baked prompts: "What patterns do you see in my productivity?", "What should I focus on today?", "How have I evolved over the past six weeks?"
• "Celebrate my wins" prompt surfaces forgotten accomplishments from the full task and reflection history
• Mobile-optimised as a progressive web app, saved as a home screen icon — no app store required
• WhatsApp integration with agent: send a message, it adds the task to Flow

Rules for avoiding distraction from the core business

• Hard cap of 0.001% of available time — the rest belongs to clients
• No coding; entire app built with Lovable (vibe coding only, no GitHub commits from the founder)
• Only build features that the founder genuinely wants to use — inbound requests that feel boring get rejected
• No product hunt launch, no AppSumo deals — distribute exclusively to existing founder clients and network
• Success metric: do existing clients get less overwhelmed? Not revenue targets or user growth

How the product reached revenue

• Launched by sharing directly with coaching clients who had the exact prioritisation problem
• Core product loop validated first before any additional features were added
• Features added incrementally based on usage by real clients, not speculative roadmapping
• AI features added only after the product had sufficient longitudinal context to make them genuinely useful
• Services business model: software is an additional revenue line, not a replacement — clients get deeper value, some discover the coaching programs through the product

What is not happening next

• No venture capital raise (acknowledged it would be fundable; choosing not to)
• No team hiring — two co-founders, complexity is low, distribution is the moat
• No product hunt launch or lifetime deal offers — attracts the wrong customers and creates permanent support overhead
• No pivot away from the core services business

What is next

• Continue selling Flow to coaching clients and the existing audience
• Flow adds a software and AI revenue line to a services business without operational overhead
• Keeps the founder sharper: building validates the principles being taught in coaching programs
• Side projects that start as creative outlets have historically become the founder's next main business