TBConnect vs ChartEye

The ToughBuilt Connect mobile app is the perfect companion to the ToughBuilt 165’ Laser Measuring Device. You no longer have to juggle the laser device, notepad and pencil and your smartphone. Instead, let the app capture and document your measurements in an organized fashion.

Need a Snellen eye chart for a quick at-home vision check or a classroom? ChartEye makes a true-size Snellen-style eye chart for your viewing distance, on screen and as a printable PDF. Set the viewing distance from 5 to 20 feet. Each letter's height follows the Snellen standard — a 20/20 letter subtends 5 arc minutes at that distance — so the rows are the right size when you stand back at the chosen distance. • EIGHT SNELLEN ROWS — from 20/200 down to 20/20, each labeled with its acuity value, at every distance from 5 to 20 ft. • TRUE-SIZE PRINTABLE PDF — letters sized by their actual printed height; when the rows need more room, the chart continues on a second Letter page instead of leaving any row out. A 100 mm scale bar lets you confirm the printer didn't shrink the page. • TRUE-SIZE ON SCREEN — after a quick card calibration, the phone shows one row at a time at its real size; step between larger and smaller rows. • TUMBLING E — a chart for children or anyone who doesn't read Latin letters, with each E facing a random direction; shuffle for a fresh set. • CARD CALIBRATION — hold a bank or debit card upright against the screen and match the outline, so the on-screen letters are true size on your device. ChartEye is a screening aid only. It is not a medical device, does not diagnose anything and is not a substitute for a professional eye exam. If you notice any change in your vision, see an optometrist or ophthalmologist. Everything is made on your device; no account needed. The on-screen chart is free, and your first 3 PDF charts are free. A one-time $4.99 unlock gives you unlimited PDFs. No subscription, no ads. Questions: overlapmarr@gmail.com