No ads · No subscription · On-device

A true-size
eye chart.

Set the viewing distance, then show the chart on screen or print a true-size PDF — with a Tumbling E option.

Download on theApp StoreFree to try · $4.99 one-time unlock

Screening aid only. Not a medical device. Not a substitute for a professional eye exam.

ChartEye true-size eye chart PDF designed for 10 feet
Calibrated, true-size On-device only No ads, no subscription Pay once

The chart, the right size

Letters sized for the distance you set.

Set your distance

The chart is sized for the viewing distance you choose, with lines from 20/200 to 20/20.

Tumbling E

Switch to a Tumbling E chart.

Printable PDF

A true-size chart PDF designed for your distance.

Three steps

No account, no setup.

Set the distance

How far away the reader will stand.

Show or print

On screen or as a PDF.

Read the lines

From 20/200 down to 20/20.

Free to try
$4.99 once

Try it free. One purchase unlocks unlimited eye charts.

  • Unlimited eye charts
  • Calibrated, true-size print
  • Everything stays on your iPhone
  • No ads and no subscription
Download on theApp Store

Questions, answered

Is this an eye test?

No. ChartEye is a screening aid only. It is not a medical device and not a substitute for a professional eye exam.

Can I print the chart?

Yes. Make a true-size PDF designed for your viewing distance.

Is anything uploaded?

No. ChartEye works on-device only.

Is it a subscription?

No. It's free to try, and one $4.99 purchase unlocks unlimited use. No ads.

The right size, every time

On-device, no ads, no subscription — pay once.

Download on theApp Store