Comparison

Plain Chess vs Knock And Drop

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

Head to head
About

Plain Chess

Enjoy offline chess matches on your iPhone without ads or accounts. Play against the computer, a friend, or use the AI Coach for strategic advice. Perfect for learning, practicing, or quick games.

Highlights
  • Offline chess play
  • Play against computer
  • Pass-and-play multiplayer
  • AI Coach explanations
  • Saved games
  • No ads or account required
Features
Read full description

Chess without the stress. Play for free as often as you like, learn from a coach that explains your games, and play the people you know. FREE TO PLAY Play Fern, a friendly rival, as often as you like, or pass and play with someone on one iPhone. Your first three games come fully coached, with hints, threat checks, takebacks, coach notes and a full review in games against the rivals and the computer. Solve the daily puzzle, start the lesson library with How Chess Works, and accept any friend's invite. The coach and rival voices are free for everyone. SIX RIVALS WITH REAL PERSONALITIES From Pip, a beginner learning one move at a time, to Nova, an expert who loves to attack, each rival plays at their own level and talks like themselves. Choose how chatty they are: quiet, friendly or spicy. Every rival is an AI and always labeled as one. Fern is always free; the other five come with Plain Chess Coach. LEARN AS YOU PLAY 55 short, hands-on lessons take you from how the pieces move to tactics, checkmates, endgames and your first openings. Each one shows the idea on the board, then lets you find the move yourself. PLAY THE PEOPLE YOU KNOW Play friends through Game Center: a daily game, with up to three days a move, or a live game with a clock. Accepting an invite is always free. Inviting friends, and Play online, which finds a player near your level or one of our AI rivals when nobody's around, come with Plain Chess Coach. No chat, just six friendly reactions. PLAIN CHESS COACH Become a member for everything else: • All six rivals and the classic computer • Coach notes, and unlimited Hint, Threats and takebacks, in games against the rivals and the computer • A review of every game against a rival, the computer or another player online: where it turned, your best move and every mistake, explained in plain words and read aloud if you like. Play any moment again from the review • The full lesson library, 85 opening lessons, and nearly 5,000 checkmate puzzles on a path through ten lands • 300 AI Coach answers a month: ask about your position, typed or out loud • Invite friends and play online • My Games: every game you finish, synced with iCloud Choose Yearly, with a 7-day free trial for eligible new members, or Monthly. Family covers up to six people through Family Sharing, with 50 AI Coach answers a month for each person. Prices vary by country; the app shows your price before you buy. Plain Chess Lifetime, $99 once, includes everything except AI Coach answers. AI Coach answer packs (25, 75 or 250 answers) are available to Lifetime owners, original buyers and members who use up their monthly answers. Already a member, or bought Plain Chess early? You keep everything you have, and your price stays the same while your membership is active. Payment is charged to your Apple Account when you confirm the purchase. A membership renews automatically unless you cancel at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours before the period ends. Manage or cancel in your Apple Account settings. Deleting the app doesn't cancel a membership. AI Coach needs an internet connection and can make mistakes. No ads, no account to create. Privacy: https://cerebraenterprises.com/plain-chess/privacy Terms: https://cerebraenterprises.com/plain-chess/terms Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Knock And Drop

Engage in a satisfying smash puzzle game where you aim and roll a ball to trigger chain reactions. Knock down jars, crumble stones, and topple towers with skillful throws and strategic angles to clear each colorful arena.

Highlights
  • Satisfying destruction physics
  • Skill-based rolling mechanics
  • Ever-changing level layouts
  • Colorful arena environments
  • Chain reaction gameplay
  • Domino effect clearing
Features
Read full description

Welcome to Knock & Drop! : The Cannon Smash Party! Some things are just meant to be smashed. Load up your cannon, take aim, and fire straight into the arena! Blast through jars, smash wooden crates, knock down towers, and trigger spectacular chain reactions with every shot. One perfectly placed cannonball can bring the whole stage crashing down. Quick Play Guide Load & Aim: Position your cannon and line up the perfect shot. Find the right angle to hit the weakest point of the structure. Fire Away: Launch your cannonball and watch it smash through obstacles, break wooden blocks, and send everything flying. Create the Chain: A single hit can trigger a massive chain reaction. Knock one object into another and keep the destruction going! Clear the Board: Destroy all the targets using as few shots as possible. Plan your attacks, make every cannonball count, and clear the entire arena! Cool Features Satisfying Destruction: Smash jars, break wooden crates, collapse towers, and watch structures burst apart with every powerful impact. Simple Cannon Mechanics: Easy-to-learn aiming and shooting controls that feel instantly satisfying, with plenty of room to master the perfect shot. Chain Reaction Chaos: Hit the right spot and let physics do the rest. One cannonball can turn a stable structure into total destruction. Ever-Changing Levels: Every stage brings a new layout, new obstacles, and a fresh cannon-smashing challenge. Colorful Arenas: Bright, lively environments packed with fun structures and satisfying targets to destroy. Ready to Fire? The cannon is loaded, the targets are waiting, and the arena is yours to destroy. Download Knock & Drop now and let the smashing begin!

Screenshots

Plain Chess4 screens
Knock And Drop4 screens

Verdict

The call

Plain Chess and Knock And Drop both sit at 4.8 stars, but that hides the real split: 100% of Plain Chess's written reviews are positive against 65% of Knock And Drop's. Plain Chess also leads on ads (none vs shown). Knock And Drop's advantage is monetization model (ad-supported vs paid) and ratings volume (4.2K vs 11). On price, rating, update cadence and in-app purchases 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. Plain Chess sells 10 in-app purchases, starting at $4.99 per month and Knock And Drop sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Plain Chess against 4.7 for Knock And Drop. That said, the two scores are not equally well evidenced: Knock And Drop has 4.2K ratings behind it against 11, so its average is the more settled of the two. Written reviews are what separate them: 100% of Plain Chess's written reviews are positive against 65% of Knock And Drop's.

UpkeepUpdate frequency

Plain Chess ships an update every 4 days, Knock And Drop weekly. Both last shipped on November 10, 2026.

Scorecard6 real differences · 4 level
Plain Chess versus Knock And Drop: the parameters behind the verdict, then further details
ParameterPlain ChessKnock And Drop
PriceFreeFree
Rating4.8 (11 ratings) — better4.7 (4.2K ratings)
Positive reviews100.0% of reviews — better64.9% of reviews
Number of ratings114.2K — better
Update frequencyEvery 4 days — betterWeekly
AdsNo — betterYes
In-app purchasesYesYes
MonetizationPaidAd-supported — better
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.013.0 — better
Further details — not scored
Size117 MB427 MB
Age rating4+12+
DeveloperCerebra Enterprises, LLCGrand Games A.Ş.

Customer experience

Plain Chess

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Knock And Drop

All ratings4,214 ratings
Positive93.5%
Neutral3.9%
Negative2.6%
Written reviews37 reviews
Positive64.9%
Neutral10.8%
Negative24.3%

In-app purchases

10 purchases

Plain Chess

Subscriptions3
  • Plain Chess Monthly$4.991 Month
  • Plain Chess Annual7 Days trial$39.991 Year
  • Plain Chess Family$69.991 Year
One-time7
  • 25 AI Coach Answers$2.99
  • 10 AI Coach Credits$2.99
  • 75 AI Coach Answers$7.99
Show 4 more
  • 30 AI Coach Credits$7.99
  • 250 AI Coach Answers$19.99
  • 100 AI Coach Credits$19.99
  • Plain Chess Lifetime$99.00
10 purchases

Knock And Drop

One-time10
  • Starter Bundle$0.99
  • 1000 Coins$1.99
  • Mini Bundle$4.99
Show 7 more
  • 5000 Coins$7.99
  • Epic Bundle$9.99
  • 10000 Coins$14.99
  • Premium Bundle$19.99
  • 25000 Coins$29.99
  • Luxury Bundle$49.99
  • Ultimate Bundle$99.99

Questions

Is Plain Chess free?
Plain Chess is free to download, with in-app purchases available.
Is Knock And Drop free?
Knock And Drop is free to download, with in-app purchases available.
Which has better reviews, Plain Chess or Knock And Drop?
Plain Chess is rated higher. Plain Chess averages 4.8 out of 5 from 11 ratings, while Knock And Drop averages 4.7 from 4.2K ratings.
Do Plain Chess or Knock And Drop have ads?
Knock And Drop shows ads; Plain Chess does not.
Which is updated more often, Plain Chess or Knock And Drop?
Plain Chess ships an update every 4 days, and Knock And Drop weekly. Most recently, Plain Chess was updated on November 10, 2026 and Knock And Drop on November 10, 2026.

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