Science-backed guides mapping out vocabulary retention, spaced repetition, and linguistic mastery—straight from the Wordrop devs.
Duolingo vs spaced repetition: which works for developers? An honest comparison of learning methods for busy professionals who need real vocabulary retention.
SM-2 is the spaced repetition algorithm developed by Piotr Woźniak in 1987 that calculates the optimal review interval for each vocabulary word individually. This guide explains the exact formula, step-by-step examples, and why Wordrop uses SM-2 to help people learn vocabulary permanently.
Spaced repetition is a learning technique that schedules reviews at increasing intervals to maximize long-term memory retention. This complete guide explains how it works, the science behind it, and how to use it to learn vocabulary faster.
A step-by-step system for building a 1,000-word English vocabulary in six months using just 10 minutes a day — no textbooks, no courses needed.
Most developers quit Duolingo within 3 weeks. Here's the real reason language learning fails for programmers — and a method that actually fits how you work.
Discover how the SM-2 spaced repetition algorithm used by Wordrop helps your brain lock in vocabulary permanently — backed by cognitive science.
Most language learners make the same vocabulary mistakes. Learn the five most common traps and the proven fixes that will fast-track your fluency.