Hi, I'm
I build free, friendly study tools — CertDesk for IT certification exams and Mrs. Pfeifer's Science for middle-school science. No accounts, no ads, just learning.
Bio coming soon.
CertDesk is a free study desk for IT certification exams — domain notes, flashcards, practice tests, drills, and progress, with no accounts, ads, or analytics. Progress stays on your device. Web, iOS, and Android.
On the desk now: CompTIA A+ Core 1 & Core 2, Cisco CCNA, ISC2 CISSP, and CompTIA Security+.
Mrs. Pfeifer's Science is a free Grade 8 science space built for curious kids — science you can poke at. Every unit has flashcards, practice questions, a quiz, hands-on mini-games, real science news, and class handouts. No accounts or ads, and progress stays on your device.
Units: 8.1 Contact Forces, 8.2 Sound Waves, 8.3 Forces at a Distance, 8.4 Earth in Space, 8.5 Genetics, and 8.6 Natural Selection & Common Ancestry.
Questions, ideas, or just want to say hi? I'd love to hear from you.