Screen Timer — Flip Countdown

Big flip countdown that proves the alarm rings — check screen + test alarm.

Screen Timer is a countdown you can read from across the room — and one that proves it will actually ring.

Set hours, minutes and seconds, hit start, and the digits fill the screen with a 3D flip. No sign-in, no account, and ads never cover a running countdown.

⏰ WHY DIDN'T IT RING? — THE PART EVERY OTHER TIMER SKIPS
One-star reviews of timer apps all say "it didn't go off". A silent alarm is not one bug but seven, each with its own fix:
• Exact-alarm permission (Android 12 and up)
• Notifications turned off for the app
• The alarm notification channel silenced by hand
• The Alarm volume slider at zero — separate from ringtone and media
• Do Not Disturb blocking it
• Battery optimisation putting the app to sleep
• Lock-screen (full-screen) permission on Android 14 and up
A check screen tests all seven, tells you which one is wrong, and opens that settings page. Anything it cannot read says "couldn't read this" instead of guessing. Then a real 10-second test alarm proves the whole chain — before you trust it with dinner or a nap.

🕐 THREE DISPLAY STYLES
• Flip — mechanical split-flap digits
• Circle — a ring that empties as time runs out
• Analog — a classic sweeping hand

🔔 RINGS WHEN IT SHOULD
The alarm goes through the system alarm service, so it fires on time even if you leave the app, the phone sleeps, or Android closes the app to free memory. Reopen mid-countdown: the remaining time is still right.

🍅 FOCUS AND INTERVALS
• Pomodoro (Pro): work and break lengths, rounds, rolls on by itself
• Interval chains (Pro): name your own phases, each with its own colour and length — circuits, tea steeping steps, revision blocks
• A heads-up alert seconds before time is up
• Home screen widget with the time remaining

📋 SESSION LOG AND DAILY GOAL
Every finished and abandoned session, with today's and the last seven days' totals. Pick a daily goal and a seven-day bar chart shows how close each day got; when a timer ends you see where today stands. Kept on this phone, never uploaded; copy it all to text or delete it in one tap, or switch the log off entirely.

🌙 EASY ON THE SCREEN
Left running by the bed or on a kitchen shelf, the screen dims itself after a few untouched minutes (touch to wake), the digits shift a few pixels every minute against OLED burn-in, and you can resize them. Only this app's window dims, never system brightness.

⭐ FREE WITH ADS, PRO WITHOUT
The free version shows a small banner under the Start button while you set a timer and, at most every few minutes, a full-screen ad after you tap Reset on a timer. Never while the clock counts down or is paused, with touch lock on, or when the alarm rings. Ads come from Google AdMob and Unity Ads, which may use your advertising ID; where the law requires it you are asked for consent first (Settings › Pro & ads).
Screen Timer Pro is a Google Play subscription (monthly, 3 months, or yearly with a 3-day free trial). It removes all ads and unlocks Pomodoro, interval chains, your own alarm sound and up to 12 saved presets (free keeps 8). A short video unlocks Pro features for 30 minutes (ads stay on). Had the app before ads arrived? Pro stays free on this install.

🔒 PRIVACY
Your timers and photos stay on your phone; there is no account. The countdown works offline; ads, Pro and anonymous usage stats use the internet, and stats can be switched off in Settings. Wi-Fi photo transfer talks only to the other device on your own network.
Full policy: https://locktimer.fighttech.vn/privacy

🧰 HANDY EXTRAS
• "Finish at…" in the time picker: pick a clock time like 15:30 and count down to it; the main screen shows when it ends
• Keep the screen awake while counting down
• Vibrate, sound or both when time is up; 24-hour or 12-hour clock
• Send photos between two phones on the same Wi-Fi by scanning a QR code — no cloud, no upload

WHAT PEOPLE USE IT FOR
Cooking, tea, workout rounds, study sprints, kids' screen time, naps, laundry, parking meters. Runs on Android 6.0 and up.