Readcrisp
Same page. Same size. Easier to read.
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How to calibrate
  1. Lighting. Pick the closest match — the blur your eye sees changes with light.
  2. Quick check. Scroll to the E rows. With Clarity off, notice which rows you can read; turn it on and compare. It's a before/after check, not a score.
  3. Adjust. Drag Clarity until the text looks sharpest and reading feels easy — or tap Find my setting and pick between two versions. The Clean dial keeps the picture tidier, with a little less sharpening.
  4. Save. Save your setting for this lighting and distance. It will be remembered.

Just put your glasses on, or took them off? Give your eyes a minute to settle before calibrating — they keep adjusting for a while.

Lighting
Distance
Your reading profile
Dark — · Dim — · Bright —
0
80
Higher Clean = tidier picture, a little less sharpening. Lower = bolder sharpening, more shimmer at edges.
This picture is drawn with the same blur model Readcrisp works against, so you can see roughly what your eye does with text like this. It's an explanation, not a measurement — it doesn't set or check your setting. Pick the Clarity that feels clearest to you.
Test on
Font
Spacing
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Tap the share button and choose “Open in Safari” (or Chrome) to launch the app.
scroll for the E rows ↓