Chrono flip timer vs Clackboard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chrono flip timer
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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.
Clackboard
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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
Verdict
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
Both are free to download. Clackboard sells 1 one-off in-app purchase. Chrono flip timer asks for nothing beyond the download.
| Parameter | Chrono flip timer | Clackboard |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 6 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | 书玉 简 | Kris Pierre Ludemann |
In-app purchases
Chrono flip timer
No in-app purchases
Clackboard
- Clackboard Pro$2.99





