OMEGA·Ω
Dyslexia · dysorthography · written-language disorders

A dyslexia dictation that explains why you go wrong.

An ordinary dictation gives a grade and stops there. This one listens to how the word was written : it aligns what you typed with the sentence, word by word, and names each difference — a homophone confusion (their/there), a spelling slip, a missing or an extra word. It is a spelling dictation in English.

Free · no sign-up · read aloud · 100 % offline, nothing leaves your device

Listen, write, understand

The dictation happens in three steps, and it's the third that changes everything : instead of a score, you get an explanation for each error and a direction to work in.

45graded sentences (easy · medium · hard)
4kinds of difference, each named
3difficulty levels
0data sent · no account

How it works

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1. You listen

The sentence is read aloud in English. The speed is adjustable : slow it down as much as you need, and have it read again without limit.

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2. You write

You type what you hear, at your own pace. No timer, no pressure. A more readable font and colored syllables are one click away.

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3. You understand

Every slip is named — not just struck through in red. You see whether it was a homophone you confused, a word you spelled wrong, one you missed, or one you added.

What it spots — and can name

Two mistakes that look alike don't share the same cause. Writing « their » for « there » isn't the same difficulty as writing « recieve » for « receive » : the first is a homophone confusion (two real words that sound the same), the second a spelling slip. The dictation tells them apart :

« Their is no point » There · « your going » you're · « to much » too much

« recieve » receive · « seperate » separate · « definately » definitely

  • Homophonetheir/there/they're, your/you're, to/too/two, its/it's : both are real words, so no spell-checker flags them. The dictation knows which one the sentence asked for.
  • Spelling slip — the word doesn't exist as written (recieve, seperate, definately) : you see the correct spelling next to yours.
  • Missing word — a word of the sentence you didn't type.
  • Extra word — a word you typed that wasn't dictated.

Your text is aligned with the sentence word by word, so a word typed out of place isn't counted twice ; it's named for what it is.

Three levels, so it stays doable

The sentences are graded, and each level targets what actually trips English writers up :

  • Easy — short, plain sentences : get used to listening, then typing, without pressure.
  • Medium — the homophone traps : their/there, your/you're, to/too, its/it's.
  • Hard — the words everyone misspells : definitely, necessary, separate, receive.

Start where you like and change level whenever you want — nothing is locked, nothing is timed.

Who is it for ?

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People with dyslexia

Children and adults alike : practice without being judged, and finally understand what your errors are made of.

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Speech therapists

A word-by-word breakdown that separates homophone confusions from spelling slips — enough to see a pattern rather than count errors.

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Families & teachers

Gentle practice at home or in class : free, private, no ad screens.

Frequently asked questions

Is the dictation really free ?

Yes, entirely, and ad-free. No account to create, no paid version, no limit on the number of dictations.

Are the sentences read aloud ?

Yes : each sentence is read in English by the browser's speech synthesis, with an adjustable speed, and you can have it read again as many times as needed.

Do you have to sign up ? Where does the data go ?

No sign-up. Everything is computed on your device : what you write never leaves the browser and is sent to no server.

Does it work without internet ?

Yes. Once the page is loaded, everything works offline — and the whole application fits in a single HTML file to download, which opens with a double-click, no installation and no administrator rights.

How is it different from a classic dictation ?

A classic dictation counts errors. This one classifies them, so you can see what kind of mistake you make most. The goal isn't the grade, it's the direction.

What it's built on

  • Built on open data — an English lexicon assembled from Wiktionary (via kaikki.org), SUBTLEX-US subtitle frequencies and the CMU Pronouncing Dictionary ; the homophone groups come from the same sources. Everything is downloadable.
  • The same engine as the corrector — the dictation and the dyslexia corrector share the same cognition of the language : sounds, spelling, context.
  • Measured, not hacked together — the rules are tested on real corpus, and ideas that don't hold are rejected and documented : the research page →
  • Private by design — everything runs on your device, no data is sent.

Are you a speech therapist ?

The tool is ready, but it lacks the essential : real field feedback. If you support people with dyslexia and would try this dictation, your view is worth more than any metric. A printable trial sheet already exists.

Get in touch (via the repo)