Reps handles anatomy two ways: photos on cards, and a drawing pad on every card that lets you reproduce a structure from memory rather than recognise it.
Anatomy is the subject where text cards break down first. The material is spatial, relational and dense with proper nouns, and a card reading "name the branches of the facial nerve" tests a list while the exam tests a picture.
You can look at a labelled diagram of the brachial plexus, feel that you know it, and find at the exam that you knew the shape of that particular image. Recognition is a much weaker form of memory than reconstruction, and it feels almost identical from the inside. That gap is where anatomy revision usually fails.
Drawing the structure from a blank pad removes the ambiguity. The roots, trunks, divisions and cords are either in the right relationship on your page or they are not, and it takes seconds to see which.
Reps has a drawing pad on the front, the back, or both sides of a card. Supported Apple Pencil models vary line thickness with pressure, which matters more than it sounds when you are distinguishing a nerve from a vessel from an outline.
A pattern that works: photograph the labelled diagram from your atlas for the back of the card, and leave the front as a prompt to draw it. Checking one against the other is the review.
A card can carry a photo on the front, the back, or both. Useful for histology fields, cadaver photographs, radiographs and cross-sections, where the thing you have to recognise is a specific image rather than a schematic.
One rule: if the image contains six facts, it is six cards. A photograph of a whole slide has no single answer, so there is no honest way to rate yourself on it.
Attachments, innervations, actions and blood supply are list material and card cleanly. One structure per card, one relationship per card. "Origin, insertion, action and innervation of biceps brachii" is four cards.
Anatomy as a class, with subjects for regions or systems. Upper Limb, Thorax, Head and Neck. Two levels, and worth planning, because cards cannot be moved between subjects afterwards.
The iPad is where this subject lives. A phone is too small to draw a plexus on, and a Mac trackpad is workable but slower than a Pencil. All three share one library through your own iCloud account.
Reps works fully offline, which covers dissection labs and hospital basements.
For drawing seriously, yes. Any Apple Pencil works; pressure sensitivity is on the 1st generation, 2nd generation and Pencil Pro, but not the USB-C model.
Not directly. A photo goes on one side of the card and your drawing on the other, which is the comparison you want anyway.
No. Nothing ships in the app. You write your own, or import a .reps file from a classmate.