KRONY TECHNOLOGIES · Android

Calls can wait.
Your focus can't.

Turn on a focus mode and RUCO Call quietly declines incoming calls, then texts each caller a polite reply that fits your moment: driving, sleeping, meetings, anything. All on your device.

Free, no ads 100% on-device ✓ Reply in under a second
21:36▲ ▼ ⏻
Meeting mode · ON
RUCO is guarding your focus
👤
Unknown number
+91 98••• ••210
Incoming📵 Declined
Declined silently no ring · no guilt
Auto-reply · SMSHi Sir/Madam, the person you called is in a meeting and will call you back once it ends.
✓✓ Delivered · name kept private
You never looked at your phone. That's RUCO.
Reply sentin under a second
🔒 Name hiddenfrom unknown callers
VIPs always ringwhitelist bypass
🚗 Driving😴 Sleeping💼 Meeting🧑‍💻 Working🎓 Class🏋️ Gym🧘 Personal✨ Custom

One call, handled in four beats

This is the exact journey every unwanted call takes while you stay heads-down.

21:36▲ ▼ ⏻
Meeting mode · ON
👤
Unknown number
+91 98••• ••210
Incoming📵 Declined
Declined silently no ring · no guilt
Auto-reply · SMSHi Sir/Madam, the person you called is in a meeting and will call you back once it ends.
✓✓ Delivered
Zero taps. Zero awkwardness.
01 · SET THE SCENE

Pick a mode, or let a schedule do it

Driving, Sleeping, Meeting, Working, Class, Gym, Personal or your own Custom mode. One tap, or an auto-schedule flips it on at the right time. An Auto-OFF timer ends it for you, reliably, even on phones that kill background apps.

02 · THE CALL ARRIVES

RUCO answers the question "who is it?"

In milliseconds it checks your VIP whitelist, your contacts, the repeat-caller emergency rule and the anti-spam cooldown. VIPs ring through untouched. Your own outgoing calls always connect.

03 · THE QUIET DECLINE

No ring. No vibration. No guilt.

Everyone else is declined silently and logged in your call history, so you can review exactly what happened later. If the same number keeps calling, the emergency bypass lets it ring, because real urgency matters.

04 · THE PERFECT REPLY

A polite SMS goes out for you

Matched to your mode, signed with your name and Sir or Madam if you chose a gender, and your identity stays hidden from numbers that aren't in your contacts. One reply per caller per cooldown, never spam.

Built like a bodyguard, polite like a secretary

Every piece exists to protect your time without burning your relationships.

🎯

8 focus modes, each with its own voice

Every mode carries its own reply, cooldown and rules. Tune the message per mode or write your own.

🚗 Driving😴 Sleeping💼 Meeting🧑‍💻 Working🎓 Class🏋️ Gym🧘 Personal✨ Custom
🔒

Your name, hidden from strangers

Numbers not in your contacts get a reply with no name and no gender. People you know still see you normally. On by default, made for safety.

To a saved contact"Hi Sir/Madam, Sahil Sir is in a meeting and will call you back once it ends."
To an unknown number"Hi Sir/Madam, the person you called is in a meeting and will call you back once it ends."
Recommended ON, especially for women.

VIP whitelist

The people who matter always ring through. No decline, no SMS, no exceptions.

Auto-schedules

Sleeping every night, Working on weekdays. Set once, forget forever.

🚨

Emergency bypass

Repeat calls in a short window ring through, because emergencies don't wait.

🛡️

Anti-spam cooldown

One reply per caller per window. Nobody ever gets flooded by your phone.

Auto-OFF that keeps its word

A system alarm ends the mode on time, even if your phone kills the app.

Dual-SIM, call history, custom replies and more

The full tour lives on its own page.

See every feature →

Nothing leaves your phone. Nothing.

RUCO Call runs entirely on your device. There is no cloud copy of your life, no ad network watching, and nothing for anyone to leak.

📱

On-device database

Call history, whitelist, profile and settings live in local storage on your phone only.

🚫

No ads, no trackers, no selling data

The app is free because it's built for trust first, not for advertisers.

🧹

Uninstall and it's gone

Delete the app and every byte of your data goes with it, instantly.

Fresh in the latest build

Shipped after real testing on real phones.

🔒

Hide your name from unknown callers

A privacy toggle, on by default, keeps your name and gender out of replies to numbers you don't know.

New
✍️

Respectful, personalised replies

Your name now carries Sir or Madam based on your chosen gender, or stays plain if you skip it.

New

A friendlier permission setup

A redesigned flow explains exactly what RUCO needs, with clear guidance if something is denied.

New

Rock-solid on aggressive phones

Faster call screening and an Auto-OFF timer that fires on time even when the OS kills background apps.

New

Become a RUCO Call tester

RUCO Call is in closed testing on Google Play. Drop your details to get early access, and help us go live.

Your email must be a Google account to test on Google Play. We'll only use it to send your test invite.

Stay focused. Stay polite.

Download RUCO Call and let your phone handle the interruptions.

▶ Get RUCO Call on Google Play