There are many tools available to work with your GPS data. We've used them too. Most of these tools require creating an account and sharing your data with some corporation. Often this works just fine, until one day after you've amassed a lot of Map data the tools start to fail, the company decides to raise their fees or worse yet goes out of business.
Cartographer keeps your data yours. Nothing is shared unless you elect to share. Your data is stored on your computer. No one can take it from you. We use the industry standard GPX file format for importing and exporting data so you can always get your data out of Cartographer and take it with you wherever you may need it.
Cartographer was created by someone who saw a need for this type of app and actually uses the it, not some corporation looking to farm your data for a quick buck or AI training.
Our plain English Privacy Terms can be read here