In my article titled You Can Increase Your Profits Without Changing Your Prices, I ended with the following summary: If You Remember Nothing Else, Remember The Following: 1. One good way to maintain and/or significantly increase your profits without raising your prices, is to reduce your Variable Costs(VCs). 2. You can reduce your variable costs by marketing more efficiently (getting more customers at lesser cost, AND maintaining them at lower expense). I once read an article that proposed a new parameter COCS: Cost Of Customers Sold or Served). This could be adopted as a Key Performance Indicator(KPI). 3. You can also reduce your variable costs by innovating more(i.e. developing greater efficiency in your routine internal operations and/or product/service delivery). That way, you would be able to produce/deliver more products and/or services with less effort, in less time, and using less resources. All of these would imply LOWER expenses/costs, leading to INCREASED profit retention per unit of product/service sold. 4. There is saying that: "You cannot manage something, if you do not measure it. Nor can you measure it, if you do not record it". Spreadsheet tracking will help you conveniently implement and sustain the process of monitoring, controlling and/or reducing your VCs. You will need to do this so as to constantly evaluate progress of your VC monitoring/control and reduction initiatives.
1. The Pareto Principle _ Using spreadsheet tracking, you can easily apply the Pareto principle in deciding which of your income sources and expense channels(i.e. products and services sales) to focus on in order to maximize profits. Considering that you are most likely to use the same marketing/sales resources to serve your customers, it only follows that if you focus on your biggest margin selling products/services, you will get increased profits at more or less the same cost.
This last point in my opinion is ONE major benefit you must seek to extract, if you choose to engage the services of a developer. S/he should be able to help you develop (in_house) expertise needed to maintain the application AFTER s/he is gone. If you fail to ensure this, all your cost_savings from using the application might end up being spent paying the developer to maintain the application over time in the future!
From this point on, I will refer to only one of the above mentioned applications, because it is my preferred work environment. That is Microsoft Excel. I believe users of other spreadsheet applications will be able to adapt whatever I say from here for use in their own peculiar environments.