Comparison

Chrono flip timer vs Clackboard

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Chrono flip timer

Features
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Chrono flip timer brings count-up and countdown timing together in a clean, classic flip-clock interface. Large, readable digits and smooth flip animations help you stay focused on every passing second. COUNT UP & COUNT DOWN • Count up starts automatically after a 3-2-1 countdown (optional) — perfect for workouts, talks, meetings, and study sessions • Record laps during count up and copy them all after pausing • Tap or drag the flip digits to set a countdown • Use quick presets for 5, 15, 25, or 45 minutes, or set hours, minutes, and seconds precisely • Add a label to your countdown (like Study or Break) and see it on the Lock Screen, in notifications, and on the start screen • Timers continue across app launches until you pause or reset them LOCK SCREEN & DYNAMIC ISLAND • Follow the remaining time and progress of a countdown in a Live Activity on the Lock Screen and in the Dynamic Island — no need to open the app • Get a notification when time is up, even when your iPhone is locked or you are in another app MADE FOR FOCUS • View an extra-large fullscreen clock in landscape • Keep the screen awake while a timer is running • Get sound, vibration, and a celebration animation when time is up • Double-tap an empty area to hear the current time • Automatically remember your last countdown duration YOUR TIMER, YOUR WAY • Two interface styles: clean Standard, or sticker-like Hand-drawn with hand-lettered flip digits and a full-screen 3-2-1 and finish screen • Choose Classic Black, High Contrast, or Stage flip themes in the Standard style • Choose light, dark, or system appearance; the app icon follows Dark Mode, with Dark and Sun alternate icons • Use multiple interface languages with matching voice announcements • Designed for iPhone, iPad, and Mac • No ads, no tracking, and no personal data collection Whether you are focusing with a Pomodoro session, cooking, training, presenting, or running a meeting, Chrono flip timer keeps time clear and easy to see.

About

Clackboard

Features
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A real split-flap board on your iPhone: flip clock, message board, countdown and scoreboard in one. Every flap falls with gravity, catches the light, casts a shadow, hits the stop and bounces – just like the departure boards at the station. CLOCK Stand your iPhone sideways on its charger and it becomes a split-flap desk clock. 12 or 24 hours, with seconds and date. At night the board can dim by itself. MESSAGE "Coffee?", "Do not disturb", "Delayed by about 5 min" – type what the board should say and watch every flap run through the alphabet until your text stands. COUNTDOWN How long until your vacation, a birthday or the end of the workday? The board keeps count. SCOREBOARD Table tennis in the garden, the match on TV, a game night: two teams, their names, points and sets. Tap or swipe down for a point, pull the flap back up to take it away – every point is one flap. WIDGETS & STANDBY The clock, your message and your countdown on the Home Screen and in StandBy, the countdown also on the Lock Screen – your iPhone on the charger becomes a split-flap clock. IPHONE & IPAD One purchase for both. An iPad on the desk or on the wall makes a big departure board. ON THE BIG SCREEN Mirror your iPhone to the TV with AirPlay or a cable, and the whole room can read the board. DELUXE IN 3D Real plastic flaps, rendered live in 3D: light, shadows, reflections and a little wear, like a board that has hung in a station for years. DESIGNS Deluxe, Station, Airport, Night Train, Retro, Brass, Signal Red, White and Terminal. Pick one from the menu – swipe sideways to switch between clock, message, countdown and scoreboard. CLACKBOARD PRO – BUY ONCE, KEEP FOREVER • 8 more designs, including Deluxe in 3D • Countdown, also as a widget • Scoreboard with your own team names • Your own messages on rotation • Video clips with sound and high-res images • No subscription, Family Sharing included No ads. No account. No data collected.

Screenshots

Chrono flip timer4 screens
Clackboard4 screens

Verdict

The call

The clearest difference is in-app purchases: Chrono flip timer at none against Clackboard's 1. On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Clackboard sells 1 one-off in-app purchase. Chrono flip timer asks for nothing beyond the download.

Scorecard1 real difference · 5 level
Chrono flip timer versus Clackboard: the parameters behind the verdict, then further details
ParameterChrono flip timerClackboard
PriceFreeFree
Update frequencyEvery 2 days—
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS17.0 — better18.0
Further details — not scored
Size6 MB4 MB
Age rating4+4+
Developer书玉 简Kris Pierre Ludemann

In-app purchases

None

Chrono flip timer

No in-app purchases

1 purchases

Clackboard

One-time1
  • Clackboard Pro$2.99

Questions

Is Chrono flip timer free?
Chrono flip timer is free to download, with no in-app purchases.
Is Clackboard free?
Clackboard is free to download, with in-app purchases available.
Do Chrono flip timer or Clackboard have ads?
Neither Chrono flip timer nor Clackboard shows ads.

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