one sec vs Opal

one sec asks you to wait. Opal refuses to open the door. The choice is really between friction and force.

By Ruslan Shchuchkin, who built PhoneStop · Last checked September 2026 · Read this page as Markdown

The short version

Choose one sec if a moment of friction is enough for you. The enforced breath stops most impulse opens, it keeps you in charge, and there is nothing to rebel against. Past one app it is around $50 a year.

Choose Opal if friction is not enough and you want a wall. Deep Focus makes the block genuinely hard to lift, which is what some people need. It is the pricier of the two, near $100 a year.

Pick friction if your problem is autopilot. Pick the wall if your problem is willpower.

How each one stops you

one sec inserts a pause and can cap opens; it is deliberately gentle, and it lets you through if you still choose to go. Opal builds a session and blocks the apps in it, with Deep Focus turning the block from a speed bump into a barrier. Both lean on Apple's Screen Time API on iPhone, where each is at its best.

So the mechanism difference is the whole story: one sec slows the door, Opal locks it.

Where one sec wins

• Cheaper, and free for a single app.
• Cross-platform and calmer, a breath, not a battle.
• The best evidence behind its pause.
• Nothing to resent, so it survives bad days.

Where Opal wins

• A real block, not just a delay.
• Deep Focus for when you cannot be trusted with an override.
• Per app, website and category control.
• Schedules for recurring focus.

Friction or force, both are aimed at single apps on the iPhone

one sec and Opal are the two best-known iPhone-first tools, and they sit at opposite ends of the same street: one slows the app, the other bars it. But both are pointed at individual apps you nominate, and both leave the rest of the phone wide open. Slow down Instagram, wall off TikTok, and the evening still finds Reddit, or YouTube, or the news.

PhoneStop takes the other route entirely: no per-app friction and no per-app wall, just one budget for the whole phone that every app draws down. It is free on Android today, with an iPhone version on the way, and it is built for the case both of these miss, the app you did not think to add.

Disclosure: we make PhoneStop, so treat our own entry with the scepticism it deserves. Everything else here is written from public information and hands-on use; prices and platforms were checked in September 2026 and change often, so check the vendor before you pay.