Simplify the following text for a Grade 11 native English-speaking person.
Original: An insulin pump is an alternative to multiple daily injections of insulin by insulin syringe or an insulin pen and allows for intensive insulin therapy when used in conjunction with blood glucose monitoring and carb counting .
Simplified: These devices are an alternative to constant and daily injections of insulin via syringes or pen . An insulin pump allows intensive insulin therapy when used along with carb counting and blood glucose monitors .