Text to speech for dyslexia and ADHD

Why listening can be easier than reading

Reading text on a page asks a brain to do two jobs at once: decode the shapes of letters into words, and then hold the meaning of those words in mind long enough to understand a sentence. For a lot of people with dyslexia, the decoding step is the bottleneck — it takes real effort, and that effort competes with the mental space needed for comprehension. Text-to-speech removes the decoding step entirely. The words arrive as sound, already decoded, so all the available attention can go toward understanding rather than sounding things out.

For ADHD, the friction is often different but the fix overlaps. Reading a static page requires sustained visual attention and a steady eye-tracking rhythm — lose your place for a second and you have to hunt for the line again, which breaks focus and invites the mind to wander. Audio doesn't have a "place" to lose in the same way; it keeps moving forward at its own pace, which some people find easier to stay attached to, especially when paired with movement — pacing around a room, doing chores, or going for a walk while listening. Doing something physical while listening is a common strategy for holding attention that reading at a desk doesn't allow.

Reading fatigue is real, and it compounds

Visual reading is tiring in a way that's easy to underestimate until you compare it to listening. Every saccade (the tiny eye jump from word to word), every re-read of a line that didn't land the first time, every moment spent re-finding your place after a distraction — it adds up over a long document. For people who already find decoding effortful or find sustained attention hard to hold, that fatigue arrives faster and deeper than it does for others. By the end of a few pages, comprehension can drop off a cliff not because the material got harder, but because the reading itself has become the hard part. Offloading that to a voice reduces the fatigue load significantly, because the eyes and the sustained-attention system are no longer the bottleneck.

Practical tips for using text-to-speech well

Tune the speed to the moment

Speed isn't one-size-fits-all, and it isn't static within a single day either. Dense, unfamiliar material — a new textbook chapter, a technical document — often goes down easier slowed down, giving your brain more time per sentence to process meaning. Familiar or lighter material can go faster, which paradoxically can help ADHD attention stay locked on rather than drifting during "easy" stretches. The best tools let you change speed instantly, mid-sentence, without it costing you anything extra or making the voice sound warped.

Pick a tool that works everywhere, not just in one app

A lot of the value of text-to-speech as a daily accommodation comes from consistency — building one habit that works whether the material is a textbook page in a browser, a PDF a professor sent, or an email that needs answering. A tool that only works inside one specific app or requires importing and uploading text into a separate window adds exactly the kind of friction that makes people give up on an accommodation after a week. The fewer extra steps between "I need to hear this" and actually hearing it, the more likely the habit sticks.

Don't let cost or limits make it feel rationed

If text-to-speech is going to be used daily — for schoolwork, for work email, for long reading assignments — a capped free tier or a per-minute quota can quietly train you to save your listening for only the "important" stuff, which defeats the purpose of an accommodation meant to be used constantly. An unlimited free tier removes that math entirely: there's no meter running, so there's no reason not to use it for the next email the same way you'd use it for the next chapter.

Where Shmia fits

Shmia was built around exactly this "works everywhere, no rationing" shape. You select text in any desktop application — a browser, a PDF, an email client, a Word document, even a code editor — and either a small play bubble appears near your selection, or you press one global keyboard shortcut (⌥⌘R on Mac, Ctrl+Alt+R on Windows, both customizable). It starts speaking in about a second, because it streams the first sentences immediately while generating the rest in the background, so long documents don't mean long waits. Speed runs from 0.75x to 2x, pitch-preserved so a slowed-down voice doesn't turn into a chipmunk or a sped-up one into mush, and it changes instantly mid-sentence with no extra cost. The free tier — 10 local voices generated entirely on your own computer — is unlimited, forever, with no credit card and no trial clock, which matters if you're planning to lean on it every single day.