Baldscone has produced a simple iPhone app to help with Tim’s accounting.

Invoice Split helps you to calculate the correct amounts of income tax and/or VAT to save every time an invoice gets paid. Quickly calculate the amount of VAT to keep aside for HMRC, how much to set aside for income tax, and more importantly how much ends up being your money to spend! Easily work out how much VAT was included without having to grab a calculator.

For more on Invoice Split visit the app’s dedicated page here.