The questions we get asked most often about IO Tech.
Does IO Tech fully replace my pupilometer?
IO Tech can fully replace your pupilometer — precision is validated across thousands of real measurements. But it also works very well as a complementary solution: a second measuring station, a backup when your pupilometer is down, or a mobile measurement option outside the store. Many opticians start this way, at their own pace.
Is it reliable for progressive and aspheric lenses?
Yes, that's exactly its purpose: three cross-checked measurement protocols (distance, near, screen) for reliable centering, including for wearers who work a lot on screens.
What does it cost?
€4.90/month (€58.80/year, 3-year minimum commitment) per device, or €245 as a single payment for a 3-year license — convenient if you'd rather pay by bank transfer or invoice.
Is my client data protected?
Yes: everything happens in your phone's browser, no photo or measurement is ever sent to a server.
Do I need training to use it?
No: open the link, activate with your license key, and measure — the app guides every step.
Is it compatible with my phone?
Yes, on iPhone and Android, directly in the browser — no app to download from a store.
Can I try it before buying?
We don't have a physical booth at SILMO this year — write to us to arrange a remote demo and we'll get back to you quickly.
Is it available in my country?
The site is available in French, English, Spanish and German, and IO Tech works anywhere you have a smartphone and an internet connection for activation.
