Organisation
Your words, grouped the way you think about them
A deck is a grouping, not a filing system. Language lives on the pair, so decks stay shallow and useful — the ones you actually want to review together, and nothing else.
- Due counts per deck, before you open one.
- Add, edit and delete a card in place.
- Review one deck, or everything that is due.
Decks
- My words23 due
184 cards · 62% known
- From the news8 due
96 cards · 41% known
- WorkClear
148 cards · 78% known
- Kitchen and cooking4 due
61 cards · 55% known
The two levels
Pair first, then decks
One concept above decks, and nothing below them. That is the whole hierarchy.
A language pair
Two BCP-47 tags: what you are learning, and what you already speak. It decides which voice speaks a card, which direction a card is asked in, and which decks you see. Rayaad has no built-in list of “supported” languages — you supply the tags.
A deck
A named group of cards inside that pair. Every deck shows how many cards it holds, how many are due, and how much of it you have actually learned. Reviewing a single deck and reviewing everything due are both one tap.
Where a deck comes from
Four ways one starts existing
You type into it
Quick add puts a card straight into the deck you are looking at.
You import a list
A CSV or a paste becomes a deck, after you have checked every row.
You install a unit
Catalog words are copied into a new deck that belongs to you.
You start empty
An empty deck is a perfectly good starting point. Nothing is ever created for you without asking.
Why the hierarchy stops at two levels
Sub-decks, tags, filtered decks and nested presets are the features that make a mature review tool powerful and also make it something you have to maintain. The maintenance is real work: deciding where a new word goes, rebalancing when a deck grows, remembering what a filter was for six months ago.
Rayaad's position is that for vocabulary specifically, that work buys very little. The scheduler does not read your deck structure — it schedules each card on its own history — so a perfectly organised collection and a single large deck get identical intervals. Decks earn their place only when you genuinely want to review a subset, and two levels is enough for that.
What you can still do
- Review one deck on its own, or everything that is due across the pair.
- Move between pairs to change language, with each pair keeping its own progress.
- Edit or delete any card at any time, including ones that came from the catalog.
- Export the whole account — every pair, deck, card and review — in one file.
Next: getting words in quickly, orwhat the catalog contains.
About decks
How is a deck different from a language pair?
A pair is the two languages — the one you are learning and the one you already speak — and it is what every card belongs to. A deck is a grouping inside that pair, like "from the news" or "work". You switch pairs to change language; you use decks to keep one language tidy.
Can I study more than one language?
Yes. You add a second pair and switch between them; each has its own decks, its own cards and its own schedule. On the Free plan one pair is active at a time, and Pro removes that limit — but a downgrade never deletes a pair, and you can still switch between the ones you have.
Do I have to organise my words into decks?
No. Most people run one deck for a long time and it works fine — the scheduler does not care how cards are grouped. Decks exist so you can review a subset when you want to, not because the app needs the structure.
What happens to a deck I installed from the catalog?
It becomes yours. Installing copies the words into a deck in your own pair, and from that moment you can edit them, delete them, or add to them like anything else you typed in.
How many cards can I have?
The Free plan holds 500 cards, counted on what you are holding rather than what you have ever created — deleting a card frees the slot. Pro is unlimited. Reviewing, editing, exporting and deleting all keep working even if you are over a ceiling.
Twenty words tonight.
Free plan with no review limit, on every device. No ads, and your words stay yours.

