SRS 101 — How MemBox compares

There are many ways to space reviews. Here’s the big picture and where MemBox fits.

Classic Leitner (box systems)

Cards move through levels (boxes). Right answers move forward; wrong answers move back. Simple and transparent. MemBox belongs to this family with a modern, color‑coded path and fixed cadences.

SM‑x / SuperMemo

Algorithm series that model memory statistically to pick optimal intervals. Powerful for very large decks; tends to push intervals far apart once items feel solid.

SM‑2 / Anki‑style

Ease factor + interval adjustments based on your responses (Again/Hard/Good/ Easy). Widely used and very configurable. Great for breadth and efficiency.

FSRS (data‑driven)

Trains parameters from your review history to predict stability and recall probability. Very strong for heavy users with lots of data; conceptually complex.

MemBox

• Type: fixed, color‑coded Leitner‑style cadence (Red → Black)
• Cadence: Red 2×/day 1 wk • Orange 1×/day 1 wk • Blue 2×/wk 1 mo • Yellow 1×/wk 1 mo • Purple 2×/mo 6 mo • Green 1×/mo 6 mo • Brown 2×/yr 2 yr • Black 1×/yr for life
• Modifier: Difficult is an optional extra‑practice bucket that does not change the main schedule
• Best for: smaller, precious decks; verbatim recall; lifetime retention

If you need a highly adaptive engine for tens of thousands of items, consider a traditional adaptive SRS. If you want word‑perfect memory for a collection you care about, MemBox keeps it simple and predictable.