STEM visual software for the reliable modelling of business

A more productive way of working, a direct path to results and a modelling style which is adaptable by design.

Position markets, customers, forecast demand for services and load/volume, drop-in anticipated/planned resources with associated capex and opex, and STEM wraps it all up and generates all the technical and financial outputs you need, including NPV, cashflow, profitability, and yield per customer; right first time.

Add dimensioning rules/drivers, expand to hundreds of cost elements, overlay a cost hierarchy when it looks like you need one; STEM just keeps working.

Explore scenarios with multiple correlated or independent inputs, replicate across discrete geographies, and stress test your assumptions with sensitivity analysis; STEM just keeps working.

Link inputs from Excel or SQL, output dynamic results tables to Excel or SQL (think Tableau, Qlik, …), publish an abridged model online with the same underlying calculations guaranteed, all from a single joined-up interface; STEM just keeps working.

Business canvas

What is STEM?


Understand the difference between our Windows desktop, distributed and enterprise solutions, as well as our free demo system for small projects.

Applications and examples

What can you do with STEM?


STEM is freely available for simulations on relevant topics from courses in business economics and engineering finance.


The new and integrated documentation web for STEM combines serial user-guide and context-sensitive help functions.

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Free subscription when we review your business model

How well do you understand your business? It may be profitable now, but how prepared are you for this to change? We have a track record of analysing individual services or entire businesses in an interactive workshop style that engages and informs. Our visual software enables multi-disciplinary dialogue about the business you thought you knew and the more uncertain future ahead.

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STEM User Group Meeting 2017 proceedings

Our most recent customer event was held on 27–28 September 2017 at King’s College, Cambridge. The modelling track explored three growth models for a start-up business, from unconstrained to measured to driven. The remainder of the event covered the forthcoming STEM version 8.0, the revised business model for Implied Logic, and two guest presentations.

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A freshly baked model of a start-up

We examine Michaela’s Best Bread Direct service, from her first unconstrained vision, through a more realistic measured phase and finally to a more ambitious, customer-driven approach. We demonstrate how STEM can be applied to almost any business topic and always delivers a systematic and reliable treatment of time and money.

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Business-case design and training at your service

Ever wondered what we do at Implied Logic? We have recently posted a comprehensive update to our services portfolio online which is effectively a self-service proposal for everything from online training on-demand through to on-site business-modelling consulting and hosting services for business models on the web.

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Connecting elements to graphs and publishing online

In what is likely to be the final preview article for the forthcoming STEM version 8.0, we explore visual connections between individual icons and a related graph, as well as intuitive, interactive options for adding an element to an existing graph. We also explore new layout options for pushing a presentation of results in STEM to the web.

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Our latest help and training materials

Documentation is never regarded as a very exciting activity, but our comprehensive help and training materials are a vital element of the self-serve experience with STEM. In the last quarter we have posted two significant updates to our online help site which enhance both of these aspects.

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A radical re-think on STEM pricing

We announce a new freemium strategy for accessing the STEM software, including a free and fully-functional demo system for small projects and study as a taster for an innovative minimal-support subscription to the Conventional STEM (C-STEM) desktop solution at just GBP 330 p.a..

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Vision for the forthcoming STEM 8.0

As part of our vision for a more intuitive way of working that bridges previous mental leaps wherever possible, we preview another two features of the forthcoming STEM version 8.0 – direct-draw connect mode and more flexible user data – that form part of a joined-up approach to fulfilling this dream.

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