Comparison

Buzzer Knockout vs ZenGrid Puzzle

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

Head to head
About

Buzzer Knockout

Features
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Stop the timer at exactly 10.00 seconds – without looking. Buzzer Knockout turns the stopwatch challenge into a party game. Everyone sees the same target time, say 6.7 seconds. Hit the buzzer to start an invisible timer and hit it again when you think the time is up. Closest to the target wins. No display, just your sense of timing. NEW: BUZZER ROYALE Every Friday at 8 pm (Berlin time) everyone plays at once. Each round the worse half is out, until only one is left. Will you be the last one standing? GAME MODES • Solo: Train your timing and chase your personal best. • NEW – Career: 50 levels in 5 chapters, up to 3 stars each. After the warm-up come Quick Glance, distractions, ghosts, wind and snow – every new star earns Sparks. • NEW – TV party: one iPhone or iPad shows the target and the ranking on the TV via AirPlay, every other phone becomes a buzzer. • Classic: 2 to 8 players on one device – take turns, pass the phone, done. • NEW – Party mode: Every turn brings a house rule – weaker hand, eyes closed, on one leg … • Knockout: Whoever is furthest off each round is out. • Time Guess: A counter starts visibly and vanishes after one second. How long did it run? • 10-Second Challenge: a fixed 10.00 s target and a result card to share. • Table Mode: Several players buzz at the same time on one screen, up to four on iPad. • Tournament: 4 or 8 players in a knockout bracket all the way to the final. • Online: Quick Match, private rooms via code or link, Time Guess and rematches – no Game Center account needed. DUEL BY LINK Three rounds, fixed target times: play first, send the link – your friends play the same times whenever they like. Even without the app: they play straight from the link via App Clip or in the browser. • Rematch in one tap – your opponent gets a notification with three new target times • Get notified as soon as someone plays your duel • A result card to share and stickers for iMessage MADE FOR GAME NIGHT • Local games are free – one device is all you need. • Teams: Compete in groups. • Handicaps like “Quick Glance” and “Distraction” level the field between pros and beginners. • Dare cards: Whoever finishes last in a round draws a card. AN EVENT EVERY MONTH Ghost Hour in October, Autumn Wind in November, Snow Storm in December: the buzzer vanishes, gets pushed around by the wind or snowed in – with double pass XP. And on December 31 the New Year's countdown: tap exactly at midnight – without a clock. DAILY CHALLENGE The same target time for everyone, worldwide, every day. Three attempts, one global leaderboard – how close can you get today? • NEW – Country league: your country counts too, with a flag next to your name. • Weekly league: your five best days count, and the top players earn Sparks every Monday. • Friends ranking: whoever opens your link joins your leaderboard. • Streaks with bonus Sparks – rescue a missed day with Sparks or a video. • Home and Lock Screen widget: today's target and your streak at a glance. • NEW – Apple Watch: stop blind on your wrist, with training and the Daily Challenge. COLLECT AND LEVEL UP • Buzzer Pass with monthly themed seasons • Daily Quests and dozens of Achievements • Buzzer skins, themes, frames, name effects, confetti and victory animations • Daily deals in the Shop • Back up your progress with iCloud BUZZER KNOCKOUT PLUS Unlock once: no ads, all dare card packs and an exclusive theme. IN 13 LANGUAGES English, German, Spanish, French, Portuguese, Italian, Dutch, Polish, Bosnian, Croatian, Serbian, Greek and Turkish. Buzzer Knockout is free to play. It contains ads and optional in-app purchases. How good is your timing?

About

ZenGrid Puzzle

Features
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Welcome to ZenGrid — the ultimate relaxing and mindful block puzzle experience designed to sharpen your mind and calm your soul. Place shapes, clear rows, columns, and 3x3 squares, and aim for the highest score in a clean, distraction-free environment. WHAT MAKES ZENGRID SPECIAL: 3 Grid Sizes to Master • 6x6 (Quick): Fast-paced, compact puzzle fun. • 9x9 (Classic): The balanced, strategic standard grid. • 12x12 (Master): A sprawling challenge for true puzzle enthusiasts. Each grid layout features its own independent high score tracking! 6 Beautiful Visual Themes Customize your game board to fit your mood: • Wood Classic (Natural & Warm) • Neon Cyber (Vibrant & Electric) • Minimalist (Clean & Modern) • Dark Mode (Sleek & Battery Friendly) • Ice Crystal (Cool & Refreshing) • Flame (Bold & Dynamic) Rewarding Combos & Full Board Clear Clear multiple lines or 3x3 blocks simultaneously to trigger explosive combos. Clear the entire board to earn a massive 2X Board Clear Bonus! Fluid & Responsive Touch Controls Enjoy ultra-smooth block dragging with smart lift offset and precision placement built specifically for touchscreens. Play Anywhere, Anytime • 100% Offline Support – No internet or Wi-Fi required. • No time limits, no pressure — just pure zen relaxation. Download ZenGrid today, challenge your brain, and find your daily moment of calm!

Screenshots

Buzzer Knockout4 screens
ZenGrid Puzzle4 screens

Verdict

The call

The clearest difference is in-app purchases: ZenGrid Puzzle at none against Buzzer Knockout's 5. ZenGrid Puzzle also leads on ads (none vs shown) and update cadence (daily vs every 8 days). On price and device support 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. Buzzer Knockout sells 5 one-off in-app purchases. ZenGrid Puzzle asks for nothing beyond the download.

UpkeepUpdate frequency

Buzzer Knockout ships an update every 8 days, ZenGrid Puzzle daily. Both last shipped on October 13, 2026.

Scorecard4 real differences · 2 level
Buzzer Knockout versus ZenGrid Puzzle: the parameters behind the verdict, then further details
ParameterBuzzer KnockoutZenGrid Puzzle
PriceFreeFree
Update frequencyEvery 8 daysDaily — better
AdsYesNo — better
In-app purchasesYesNo — better
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS17.615.0 — better
Further details — not scored
Size25 MB33 MB
Age rating4+4+
DeveloperStavros PetropoulosOmer Faruk Demirci

In-app purchases

5 purchases

Buzzer Knockout

One-time5
  • 100 Sparks$0.99
  • 500 Sparks$2.99
  • 1,200 Sparks$3.99
Show 2 more
  • Premium Pass$8.99
  • 3,000 Sparks$8.99
None

ZenGrid Puzzle

No in-app purchases

Questions

Is Buzzer Knockout free?
Buzzer Knockout is free to download, with in-app purchases available.
Is ZenGrid Puzzle free?
ZenGrid Puzzle is free to download, with no in-app purchases.
Do Buzzer Knockout or ZenGrid Puzzle have ads?
Buzzer Knockout shows ads; ZenGrid Puzzle does not.
Which is updated more often, Buzzer Knockout or ZenGrid Puzzle?
Buzzer Knockout ships an update every 8 days, and ZenGrid Puzzle daily. Most recently, Buzzer Knockout was updated on October 13, 2026 and ZenGrid Puzzle on October 13, 2026.

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