Whole screen
Nothing on the screen responds. The call carries on underneath exactly as it was — video, sound, the other person — and every tap, swipe, pinch and palm lands on the lock instead.
Free · A touch lock for video calls · Android
The call stays on. Whatever they tap.
Start a video call, lock the screen, hand the phone over. ScreenFrezzer lays a transparent lock over the call so a toddler’s taps, swipes and mashing cannot hang up, mute, or flip the camera. Lock the whole screen, or only the call buttons. When you want the phone back, hold a volume key for three seconds. No account, nothing leaves the phone.
Coming soon to Google Play
- No account
- No screen reading
- No internet needed
- No subscription
A lock over the call
Taps and swipes stop at the lock
Or just the buttons
Draw zones over end, mute and flip
Three ways out
Volume keys, a corner hold, or fingerprint
Never reads the screen
No account, nothing leaves the phone
Three steps
Call, lock, hand it over
Practise the lock and the unlock once, without a call, and then it is one tap every time.
See what it doesSet it up once
Grant the two Android permissions the lock needs — Display over other apps, and the accessibility service that hears the volume keys — pick a lock mode, and run the practice lock and unlock.
Start the call, tap the lock
Open WhatsApp, Meet or whichever app you use and start the call. Tap the floating lock button at the edge of the screen, or accept the offer to lock when the call begins.
Hand it over, take it back
The call stays on through everything they do to the screen. When it is time, hold a volume key for three seconds and the phone is yours again.
What it does
Built for one moment: a small child and a live call
A lock layer, two ways to lock, three ways to unlock, and nothing else in the way.
Call buttons only
Draw blocked zones over the end-call, mute and flip-camera buttons and leave the rest of the screen live, so a child can still tap a reaction or move a thumbnail. Zones are saved per app, because every call app puts its buttons somewhere different.
Hold a volume key to unlock
The recommended way out: hold either volume key for three seconds. A child mashing the screen never touches them, and a parent does it without looking. Prefer something else? Hold the top corner for three seconds, or use your fingerprint.
A lock button that waits at the edge
Once armed, a small floating lock button sits at the edge of the screen, over whichever app is open. Start the call, tap it, hand the phone over.
Offers to lock when a call starts
ScreenFrezzer can notice when a known video-call app comes to the front and offer the lock right then. It is a prompt, not an automatic lock, and you choose whether it is on.
Practise first
A practice lock and a practice unlock, with no call involved, so the first time you need it you already know the hold. Sounds, haptics and animations each have their own switch, and there is a share link for passing the app on.
Straight about what a lock can do
ScreenFrezzer stops touches on the screen. It does not stop the phone’s own power button, an emergency call, or every gesture Android reserves for itself, and it is not a child-safety product — it is a way to keep a call going while a small child holds the phone, with you in the room.
How the app describes its limits, in the app and here.
- No account
- No screen reading
- No internet needed
- No subscription
FAQs
Straight answers
What people ask before they put a lock over a call.
Which call apps does it work with?
Any app, because the lock sits over whatever is on screen. Whole screen needs nothing app-specific. Call buttons only needs blocked zones drawn for the app, and the app saves a layout per call app so you draw them once.
Why does it need an accessibility service?
It is the only way Android lets an app notice the volume keys while another app is in front, hold back the Back and Home gestures, and notice that a call app has opened. The service is used for those three things, only while a lock is armed or active, and it never reads what is on the screen. The privacy policy spells it out.
What if I forget how to unlock?
Hold either volume key for three seconds — that is the default and the one we recommend. If you chose the corner hold or fingerprint instead, those work the same way they did in practice.
Can my child still hang up somehow?
Not by touching the screen in Whole screen mode, and not through a blocked zone in Call buttons only. The power button and emergency calls remain the phone’s own, and Android may still let some system gestures through on some phones. Run the practice lock to see what your phone does.
Does it record or watch the call?
No. The lock layer swallows touches and nothing else. The app never reads the screen, never records anything, and sends nothing off the phone.
Does it need an internet connection?
No. The lock works offline. When there is a connection the app fetches its remote settings and sends usage counts and crash reports to Google Firebase, described in the privacy policy.
Is there an iPhone version?
No. iOS does not let an app lay a layer over another app’s call, so there is no iOS lock.
Is it free?
Yes. There is no subscription and no account.
Tell us what to fix or add next
A call app whose buttons the zones do not fit, a phone where the volume-key hold does not register, or something that got through the lock — it goes to the person who builds the app.
Prefer email? screenfrezzer@makekk.com reaches the same person. What you send is kept only to reply — see the website privacy policy.
Hand over the phone, keep the call.
Free. No account, nothing leaves the phone, and the lock works with the call apps you already use.
Coming soon to Google Play
No account required