About RecallOS
A daily active-recall habit for healthcare students — wake up your brain, stay sharp, and study a little every day instead of cramming.
What RecallOS is
RecallOS is a study app built around one idea: a short, daily Recall Run of high-yield practice questions. Instead of rereading notes, you retrieve answers from memory, see a rationale for each one, and your misses come back the next day. It is designed for nursing students, NCLEX candidates, new-graduate nurses, ICU and critical-care nurses, and nurses on the CRNA/SRNA path.
Who it's for
We focus on nursing and NCLEX first, with dedicated support for CRNA/SRNA, CCRN and critical-care, and other advanced-practice health paths. If your path isn't healthcare, RecallOS probably isn't the right tool.
Who builds it
RecallOS was founded by a practicing CRNA (nurse anesthetist) who wanted the studying habit they wished they'd had. The team writes and maintains the app and its educational resources.
Independence
RecallOS is an independent study aid. It is not affiliated with, endorsed by, or sponsored by NCSBN, the NCLEX, the AACN Certification Corporation, the NBCRNA, the AANA, or any other testing organization or certifying body. Exam and certification names are used descriptively to indicate subject matter.
Our promises
- The daily Recall Run is free, forever — free users are never blocked from learning.
- We don't publish fabricated statistics, testimonials, or pass-rate claims.
- We never promise you'll pass an exam, hit a score, or retain a specific amount. RecallOS is a study aid — not medical advice, and not a guarantee.
Questions? Contact us or read our editorial standards.