Why You Forget New Words (and How Spaced Repetition Fixes It)
Vocabulary is the most important part of a language. Grammar helps you build sentences, but without words you have nothing to build them with.
The hard part is that almost nobody remembers a new word after seeing it once. Maybe very young children can, but for the rest of us, forgetting is normal. It isn't a sign that you're bad at learning. It's how memory works.
One exposure is never enough
Researchers have known for well over a century that new information fades quickly unless we meet it again. The trick is when you meet it again. Review too soon and you waste time on words you already know. Review too late and you've forgotten it and have to start over.
That's the idea behind spaced repetition: review each word just before you'd forget it, and the gap gets longer every time you succeed.
Your memory is not my memory
Here's the problem with a fixed schedule ("review on day 1, day 3, day 7"). Memory isn't the same for everyone:
- Some people pick up words faster than others.
- Even for the same person, ability changes with age.
- It changes through the day. You may learn better in the morning than late at night.
- It changes with the situation: tired, stressed, distracted or relaxed.
- And some words are simply harder than others.
A single schedule can't fit all of that. So Mem-App doesn't use one.
How Mem-App adapts to you
In Mem-App, each word has its own review cycle, and it adjusts based on how you actually remember it.
Your only job is to answer honestly after each review, with one of four options:
| You tap | It means | What happens next |
|---|---|---|
| Easy | Remembered without effort | The next review is pushed far out |
| Good | Remembered, with a little thought | The interval grows at your normal pace |
| Hard | Got it, but it was a struggle | The word comes back sooner |
| Forgot | Couldn't recall it | The word returns soon so you can rebuild the memory |
That's it. No settings to tune and no schedule to plan. Behind the scenes, Mem-App uses a personal ease factor for each word, so the next interval adapts to your results over time. Words you find easy fade into the background, and words you struggle with get more attention, automatically.
Why this is efficient
Spaced repetition is one of the most widely studied and practical methods for memorising information. The reason it works is simple: you spend your time on the words that need it, and not on the ones you already know.
The result is that you can learn more words with less total review time, and the effort is matched to your own needs.
Try it
- Look up a word in Mem-App's built-in dictionary (definitions, examples, synonyms, opposites and UK/US pronunciation).
- Add it to your list.
- Review when it's due and tap Easy, Good, Hard or Forgot.
Mem-App is free to start: the Starter plan lets you save up to 50 words with 5 new words a day, and it's ad-free. You can install it from your browser on Android, iPhone and iPad, Mac and Windows, with no app store needed.
I'm building Mem-App on my own, so I'd love to hear from you: how do you usually review new words, and what would make reviewing easier for you?