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 â€ĸ Count up starts automatically after a 3-2-1 countdown (optional) — perfect for workouts, talks, meetings, and study sessions â€ĸ Record laps during count up and copy them all after pausing â€ĸ Tap or drag the flip digits to set a countdown â€ĸ Use quick presets for 5, 15, 25, or 45 minutes, or set hours, minutes, and seconds precisely â€ĸ Add a label to your countdown (like Study or Break) and see it on the Lock Screen, in notifications, and on the start screen â€ĸ Timers continue across app launches until you pause or reset them LOCK SCREEN & DYNAMIC ISLAND â€ĸ 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 â€ĸ Get a notification when time is up, even when your iPhone is locked or you are in another app MADE FOR FOCUS â€ĸ View an extra-large fullscreen clock in landscape â€ĸ Keep the screen awake while a timer is running â€ĸ Get sound, vibration, and a celebration animation when time is up â€ĸ Double-tap an empty area to hear the current time â€ĸ Automatically remember your last countdown duration YOUR TIMER, YOUR WAY â€ĸ 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 â€ĸ Choose Classic Black, High Contrast, or Stage flip themes in the Standard style â€ĸ Choose light, dark, or system appearance; the app icon follows Dark Mode, with Dark and Sun alternate icons â€ĸ Use multiple interface languages with matching voice announcements â€ĸ Designed for iPhone, iPad, and Mac â€ĸ 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. IPHONE DUO Your iPhone Duo becomes a bedside clock, and Clackboard works out how it is standing. Half-folded on a table, the clock stands on the upper half with a reflection below. Propped half-open on its edges, like a book stood up, the left side shows the hours and the right side the minutes, and the fold stays clear. As a tent, the clock uses the full width of the outer display. In the night hours the board turns amber, with no clacking and no seconds; on a table the lying half is a dimmer – swipe up or down. Without a charger, a quiet notice appears below 20 % battery. You can switch the night light off in Settings. With Pro, the Duo also shows a second time zone, one clock per half, and becomes a scoreboard pad: on the lying half each team gets a big field – tap for +1, swipe up for −1; propped on its edges, Home is on the left and Guest on the right. Nothing changes on other iPhone models. 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 â€ĸ 8 more designs, including Deluxe in 3D â€ĸ Countdown, also as a widget â€ĸ Scoreboard with your own team names, also as a pad on iPhone Duo â€ĸ Second time zone on the clock â€ĸ Your own messages on rotation â€ĸ Video clips with sound and high-res images â€ĸ 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. Chrono flip timer also leads on update cadence (every 2 days vs every 2 weeks). 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.

UpkeepUpdate frequency

Chrono flip timer ships an update every 2 days, Clackboard every 2 weeks. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

Scorecard2 real differences ¡ 4 level
Chrono flip timer versus Clackboard: the parameters behind the verdict, then further details
ParameterChrono flip timerClackboard
PriceFreeFree
Update frequencyEvery 2 days — betterEvery 2 weeks
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+
DeveloperäšĻįŽ‰ įŽ€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.
Which is updated more often, Chrono flip timer or Clackboard?
Chrono flip timer ships an update every 2 days, and Clackboard every 2 weeks. Most recently, Chrono flip timer was updated on November 5, 2026 and Clackboard on November 6, 2026.

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