one sec and Go Gray both add healthy friction to phone use. one sec interrupts you with a short pause, like a deep breath, before you open an app you chose. Go Gray turns the whole screen grayscale so every app is less tempting, and nudges you when you have spent too long.
At a glance
| Go Gray | "one sec" | |
|---|---|---|
| Main approach | Grayscale for the whole phone, plus nudges after 30 minutes and 1 hour on apps you choose. | Interruptions before opening chosen apps (for example, take a deep breath), plus blocking and time limits. |
| Platforms | iPhone only. | Multiple devices (per one-sec.app). |
| Price | Free download; Go Gray Pro $2.99/month or $24.99/year. | Free download; see one-sec.app for paid plans. |
| Screen time data | Stays on your iPhone; never uploaded. | See one sec’s privacy policy. |
Which should you choose?
Choose one sec if you want a pause before opening specific apps. Choose Go Gray if you want your whole phone to feel less stimulating. They work well together: grayscale lowers the pull, and a pause interrupts the habit.
one sec details were checked on its official site (one-sec.app) on October 20, 2026. Features and prices can change; check there for the latest.
Get Go Gray
Go Gray is free to download on the App Store for iPhone. Go Gray Pro is $2.99 a month or $24.99 a year (US prices).
How Go Gray works · FAQ · vs. Screen Time · vs. Opal · vs. one sec · The app