There are several DNA analysis apps. But most of them are subscription-based. DNADynamo is a static license app. It means that once you purchase a license, you get full support for these licenses, including future updates. We have five licenses in my lab, and I can easily transfer the licence on the computer of the finished student to the one who has just started. The interface is improving with every update, and I can say I love the app!
SnapGene Viewer - SnapGene offers the fastest and easiest way to plan, visualize, and document DNA cloning and PCR. You can easily annotate features and design primers.
Periodica - Periodic Table - Download this app from Microsoft Store for Windows 10. See screenshots, read the latest customer reviews, and compare ratings for Periodica - Periodic Table.
BioEdit - Biological sequence alignment editor
Avogadro - Avogadro is a free, fantastically easy to use molecule editor.
UGENE - UGENE is free open-source cross-platform bioinformatics software
Ptable - Interactive periodic table with dynamic layouts showing names, electrons, oxidation, trend visualization, orbitals, isotopes, and compound search. Full descriptions from write-up sources.