Now Available on iOS

Block the noise.
Lock in.

One tap blocks every distraction. No override. No willpower. Just you and the work that matters.

Download on the App Store See how it works →
★★★★★ 4.9 · Thousands of focus sessions daily
What Sero does

Simple by design.
Brutal by intent.

🔒 Block
Pick apps. Block them.
Choose what pulls you away. Instagram, TikTok, YouTube — Sero locks them for the day the moment you hit your limit.
Calendar
Notes
Instagram
TikTok
YouTube
⏱ Limits
Your daily limit. Hard stop.
Set how long you're allowed per app each day. Hit the cap — they're gone until tomorrow.
Instagram 1h 20m / 2h
TikTok BLOCKED
YouTube 45m / 2h
🎮 Unlock mechanic
Want more time? Earn it.
When you hit your limit, the only way back is through the game. Beat it — you get 15 minutes. One try. No cheats. No easy exit.
🔒
Limit hit
→
🕹
Play the game
→
⏱
+15 min
✕
Pricing

Start free.
Go deeper with Pro.

Free
$0
Free forever
  • 🔒1 block session at a time
  • ⏱Daily app time limits
  • 🎮1 game unlock try per session
Download free
Premium
$5.99 / month
$49.99 / year Save 30%
  • 📱Multiple block sessions
  • ⚡Quick extends — no game required
  • ♾️Unlimited game unlock tries
  • 🔒Daily limits & app blocking included
Get Premium
How it works

Three steps.
Then just work.

Step 01
Pick your apps
Choose what to block. Instagram, YouTube, WhatsApp — whatever pulls you away. Build sessions, name them, save them.
Step 02
Set a duration
30 minutes or 3 hours. Tap once to start. No confirmation screens. No "are you sure?" Sero trusts you already decided.
Step 03
Actually focus
The session runs. Blocked apps stay blocked. When it ends, Sero steps aside — quietly, without ceremony.
Early users

People who actually use it
have a lot to say.

★★★★★
"I used to justify opening Instagram just to check something. Sero removed that option. Best decision."
Alex K. · Designer
★★★★★
"The hard lock is what sold me. Every other app lets you override. Sero doesn't. That's the difference."
Mia R. · Freelance writer
★★★★★
"Got more done in three days with Sero than in the two weeks before it. No joke."
James T. · Startup founder
★★★★★
"Clean, dark, minimal. The kind of app that respects you enough not to gamify your attention."
Sara M. · UX researcher
★★★★★
"Scheduled my morning block on day one and haven't touched it since. Runs itself."
Noah P. · Developer
★★★★★
"Quiet interface. No streaks, no points, no pressure. Just you and your work."
Leila A. · Architect
★★★★★
"I used to justify opening Instagram just to check something. Sero removed that option. Best decision."
Alex K. · Designer
★★★★★
"The hard lock is what sold me. Every other app lets you override. Sero doesn't. That's the difference."
Mia R. · Freelance writer
★★★★★
"Got more done in three days with Sero than in the two weeks before it. No joke."
James T. · Startup founder
★★★★★
"Clean, dark, minimal. The kind of app that respects you enough not to gamify your attention."
Sara M. · UX researcher
★★★★★
"Scheduled my morning block on day one and haven't touched it since. Runs itself."
Noah P. · Developer
★★★★★
"Quiet interface. No streaks, no points, no pressure. Just you and your work."
Leila A. · Architect

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Free to download. No subscription required to begin.

Download on the App Store