If you remember this product exists the next time you're measuring than yes, it might be useful. I use my notes app to jot down field measurements all the time and it works well. Simplicity can be nice up until the point of too much fragmentation.
If I use a product and find it handy and convenient I'll remember to use it next time. Likewise, if I use a product and find it obtuse and makes a simple task harder than it needs to be, I'll remember not to use it next time.