Who is using your app?

How many people… use a screen reader?

0.009%

1 in 11,000 people use a screen reader

How many people… turn on Reduce Motion?

3.52%

1 in 28 people uses Reduce Motion

How many people… use Reduce Transparency?

Screenshots comparing Reduce Transparency off (parent page content blurred and visible around modal content) versus Reduce Transparency on (parent page content totally obscured, improved contrast)

2.64%

1 in 38 people uses Reduce Transparency

How many people… use dark mode?

Screenshots comparing Dark mode off (light background, dark text) versus Dark mode on (dark background, light text)

36.97%

1 in 2.7 people use dark mode

How many people… change their text size?

Four screenshots demonstrating the change in layout from X Small (text size #1, the smallest) to Large (text size #4, default), to XXX Large (text size #7, the largest in the default range) and AX5 (text size #12, the absolute largest)

Text size simplified

Bar chart of distribution of text size settings Small (text sizes 1, 2, and 3) = 8.81% Default (text size 4) = 68.75% Large (text sizes 5, 6, and 7) = 19.34% Very large (text sizes 8 and up) = 3.11%

Individual text sizes

X Small = 3.04% Small = 2.25% Medium = 3.51% Large = 68.75% X Large = 6.47% XX Large = 4.81% XXX Large = 8.06% AX 1 = 1.77% AX 2 = 0.95% AX 3 = 0.28% AX 4 = 0.06% AX 5 = 0.05%

If don't have your own site or app stats, derive them from demographics

A British site that extrapolates how many people using your site have disabilities, based on population demographics: https://how-many.herokuapp.com

Accessibility is not a numbers game

Using numbers to justify accessibility efforts won’t get you far. But it’s super-interesting to see how people are using your app.

Who is using your app?