Yes — you can make almost any reading app friendlier to dyslexic eyes: install the free OpenDyslexic font where the app allows custom fonts, then widen line spacing and letter spacing, shorten line lengths with bigger margins, and turn on text-to-speech or synced narration where available. None of these are a treatment; they are comfort settings, and the U.S. National Institute of Child Health and Human Development is a solid starting point for what dyslexia actually is.
MonBook Pro publishes information, not medical advice — for diagnosis or support, talk to a qualified professional. What follows is configuration, not therapy.
What is OpenDyslexic and where did it come from?
OpenDyslexic is a free, open font released by its creator Abelardo Gonzalez in 2011, with letterforms weighted toward the bottom — thicker bases intended to anchor letters and reduce the visual confusion some dyslexic readers experience with rotation and flip-prone characters like b, d, p, and q. Because it is free and openly licensed, it has spread widely through e-reading apps, education tools, and accessibility extensions.
Worth knowing: research on whether specialized fonts measurably improve reading speed is mixed, and the NICHD's materials emphasize structured literacy interventions as the evidence-based path. Fonts are comfort tools. Readers who like OpenDyslexic often simply report less fatigue — which is reason enough to try it.
Which reading apps support custom fonts like OpenDyslexic?
On Android, apps with permissive font settings are the natural home — Moon+ Reader, per its Play listing, loads custom fonts from device storage, making it one of the easiest ways to read your own files in OpenDyslexic. PocketBook Reader and other library-style apps offer varying font options. Kindle e-readers expose Amazon's built-in font list, which has included accessibility-oriented choices in recent firmware — check your device's font menu, per Amazon's support pages, since the list changes by model.
Where an app lacks custom fonts, system-level solutions exist on some platforms — accessibility settings and browser extensions can apply OpenDyslexic to web reading.
What settings matter most besides the font?
- Line spacing: more air between lines reduces visual crowding; most reading apps expose this.
- Letter and word spacing: the settings Moon+ Reader is known for, where supported by the format.
- Line length: larger margins shorten lines, easing the return sweep to the next line.
- Text size: bigger is usually calmer; do not be shy about it.
- Contrast: off-white backgrounds with dark text often beat pure black on white.
- Text-to-speech: hearing text while reading it helps many readers; both major mobile platforms provide system TTS engines.
How do you set up a comfortable configuration on Android?
- Download the OpenDyslexic font files from the creator's official source and place them in the folder your reader app watches.
- Open your book, enter display settings, and select the custom font.
- Increase line spacing a step or two beyond default and widen margins.
- Set text size comfortably large — if it feels slightly too big, it is probably right.
- Enable TTS from the app or system accessibility menu and adjust speed to taste.
Do e-readers help dyslexic readers compared with paper?
There is honest evidence in both directions, and the NICHD's public materials are the right place to read it carefully. What e-readers and reading apps clearly offer is control: spacing, size, and narration adjustable per reader, per book, per session — something a printed page can never do. Some readers with attention or visual-processing differences settle on E Ink for its low glare; others prefer a tablet for color and TTS integration. Both are legitimate outcomes.
What about schools and library apps?
Library apps like Libby expose text-size and lighting controls, though not custom fonts; Libby's help pages document the reader options available. For students, many institutional platforms carry their own accessibility toolkits. The practical tip: set one device up properly and it becomes the reference — screenshot the settings so you can reproduce them on every new app.
Where should you start?
With the free things, in this order: OpenDyslexic in an app that accepts custom fonts; spacing and margin increases; TTS turned on during rereads. Give each change a week. Comfort settings are personal — the configuration that works is the one that gets used, and dyslexic readers report widely different preferences, which is exactly why per-reader control is the accessibility story here.
For more context, read Moon+ Reader vs. PocketBook Reader: Which App Suits Your Files?.
For more context, read reading app privacy.
For more context, read Calibre Companion Apps: How Do You Send Books Wirelessly?.