Turning leadership insight into measurable growth
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In summary
A bespoke SaaS platform that enables leadership teams to quantify business performance, align on priorities, and systematically improve their probability of success.
The backstory
Quarterli is a SaaS product conceived by McKenzie Growth Management and designed, developed, and delivered end-to-end by Sandlebridge. The platform is built to help business leaders engage their senior teams in structured, meaningful conversations about performance—shifting focus from day-to-day operations to working on the business.
At the heart of Quarterli is the Growth Probability Matrix: a clear, visual model that shows where a business currently sits and how likely it is to succeed based on a set of measurable factors. The platform operationalises this model, transforming what is often subjective leadership discussion into a consistent, data-driven process.
The Challenge
Senior leadership teams often struggle to step back from operational pressures and objectively assess the health and trajectory of their business. Strategic discussions can become fragmented, overly subjective, or dominated by individual perspectives rather than collective insight.
McKenzie Growth Management had developed a powerful framework—the Growth Probability Matrix—built on thirteen Growth Probability Indicators (GPIs), each representing a key driver of business success. However, without a digital platform, applying this framework consistently across organisations was difficult. The process relied heavily on manual facilitation, limiting scalability, repeatability, and the ability to track progress over time.
There was a clear need for a structured, scalable solution that could:
Engage entire leadership teams in a consistent assessment process Capture and analyse data objectively Visualise results in a way that drives clarity and action Provide ongoing tracking to support continuous improvement
Outcomes & Benefits
Solution provided
Sandlebridge designed and developed a fully custom SaaS application, built on Bubble.io, supported by a Webflow-powered marketing site. The platform digitises the entire Growth Probability Matrix methodology, making it accessible, scalable, and easy to use.
The process begins with the Managing Director or CEO inviting senior team members to complete an online questionnaire. Each participant provides input across the thirteen Growth Probability Indicators. Behind the scenes, the application aggregates and processes these responses using a bespoke algorithm, determining the organisation’s position within the Growth Probability Matrix.
A dedicated leadership dashboard provides a comprehensive view of results. Responses are anonymised to encourage honesty and reduce bias, while visual reports and charts highlight strengths, gaps, and areas requiring attention. The platform also enables leaders to define, log, and track strategic actions—creating a continuous feedback loop between insight and execution.
The solution is fully integrated with Stripe for subscription management and payments, and Mailchimp for communication and user engagement, ensuring a seamless commercial and operational ecosystem.
Outcomes & Benefits
Quarterli transforms what was previously a qualitative, workshop-led process into a structured, repeatable system. Leadership teams gain immediate clarity on where their business stands, supported by data rather than opinion.
The platform drives higher engagement across senior teams by giving every voice equal weight through anonymised input. This leads to more balanced, honest discussions and stronger alignment around priorities.
Crucially, the ability to track progress over time introduces accountability. Businesses can see how their position on the Growth Probability Matrix evolves, linking strategic actions directly to measurable improvement. This moves strategy from a periodic exercise to an ongoing discipline.
From a commercial perspective, the SaaS model enables McKenzie Growth Management to scale their methodology far beyond traditional consultancy constraints, reaching more organisations with a consistent, high-quality experience.
Strategic impact
Quarterli positions McKenzie Growth Management not just as a consultancy, but as a product-led business with a proprietary, scalable growth framework. The platform creates a repeatable pathway for client engagement, reducing reliance on time-intensive delivery while increasing reach and consistency.
For end users, the strategic impact is equally significant. Leadership teams are equipped with a clear, evidence-based mechanism for decision-making. The Growth Probability Matrix becomes a shared language across the organisation, aligning teams around what truly drives success.
Over time, this shifts organisational behaviour—from reactive management to proactive, data-informed leadership—embedding better habits and improving long-term business performance.