Comparison

Quack Sort vs Screw Machine

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

Head to head
About

Quack Sort

Engage in a unique color-sorting puzzle where you tap groups of rubber ducks to send them onto a looping track. Match ducks by color and plan your moves carefully to avoid filling the path. Clear all ducks to complete clever levels with surprising obstacles and rewarding challenges.

Highlights
  • Color-sorting rubber duck puzzles
  • Looping track mechanic
  • Tap to send ducks
  • Match and sort by color
  • Manage limited space
  • Clever levels with obstacles
  • Helpful boosters
Features
Read full description

Ready to get your ducks in a row? Quack Sort: Loop Puzzle gives color-sorting puzzles a fresh spin. Tap groups of colorful rubber ducks and send them onto a looping track. Match ducks by color, choose the right order, and keep the path moving without running out of space. The rules are easy to learn, but every move matters. Release the wrong ducks too early and the loop may quickly fill up. Find the smart sequence, clear the obstacles, and watch every color slide perfectly into place. HOW TO PLAY • Tap to send ducks onto the loop • Match and sort ducks by color • Manage limited space and plan the order • Sort every duck to complete the level WHY YOU’LL LOVE IT • A fresh loop-and-sort puzzle mechanic • Bright rubber-duck visuals and smooth movement • Clever levels with new obstacles and surprises • Helpful boosters for tricky situations • Limited-time events and rewarding challenges • Relaxing gameplay with a satisfying sense of flow Sort the ducks, clear the way, and keep the good times flowing!

About

Screw Machine

A unique color-sorting puzzle game where you manage screws on a spinning machine. Tap panels to release screws and match them to their colored plates before the rail overloads. Features special mechanics like mystery plates and gates for added challenge.

Highlights
  • Spinning machine sorting mechanic
  • Color-matching screw puzzles
  • Tap-to-release screw panels
  • Special game-changing parts (mystery plates, gates)
  • Offline play
  • No timer or move counter
Features
Read full description

Screw Machine is a color-sorting screw puzzle with a moving twist. Instead of stacking screws onto a bolt, you spill screws onto a spinning machine and let timing do the sorting. Tap a panel drop its screws onto the rail, and watch each color thread itself into its matching plate as the ring carries it around. Fill every plate to win. Overload the rail and the whole machine seizes up. HOW THE MACHINE WORKS • Tap a panel to loosen its screws onto the spinning rail • Four color plates sit around the ring — each one takes three screws of its color • As the machine turns, every screw passing its matching plate drives itself in • Fill a plate and it locks shut; the next color rolls up behind it • Clear all the plates to finish the level KEEP IT TURNING • The rail only holds so many screws, release colors with nowhere to go and it jams solid • Read the machine before you tap: open the panels whose colors have an open plate • No move counter, no timer, you only lose if the rail jams for good • Every level is a small sorting puzzle built to be untangled PARTS THAT CHANGE THE GAME • Mystery plates: The next color stays hidden behind a "?" until it rolls into place • Gates: Run a screw through and it splits into more • Tunnels: Feed a whole extra run of panels onto the board • Arrows: Panels that you can only unlock from a certain direction WHY IT'S HARD TO PUT DOWN • A fresh, tactile spin on the nuts and bolts puzzles you already love • One-tap, simple, with real timing and planning underneath • Hand-built levels that stay clever without ever feeling like work • Oddly satisfying to watch, screws driving home, plates locking in sequence • Play offline, anywhere, no wifi needed • Free to play, with lives that refill over time Loosen the screws. Run the machine. Sort every color.

Screenshots

Quack Sort4 screens
Screw Machine4 screens

Verdict

The call

Quack Sort and Screw Machine both sit at 4.9 stars, but that hides the real split: 63% of Quack Sort's written reviews are positive against 50% of Screw Machine's. Quack Sort also leads on chart position (#99 vs unranked) and ratings volume (3K vs 445). On price, rating, update cadence and ads 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. Quack Sort sells 17 one-off in-app purchases and Screw Machine 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 — 4.9 for Quack Sort against 4.9 for Screw Machine. That said, the two scores are not equally well evidenced: Quack Sort has 3K ratings behind it against 445, so its average is the more settled of the two. Written reviews are what separate them: 63% of Quack Sort's written reviews are positive against 50% of Screw Machine's.

UpkeepUpdate frequency

Quack Sort ships an update every 5 days, Screw Machine every 4 days. The most recent releases landed on October 23, 2026 and October 20, 2026 respectively.

Scorecard3 real differences · 8 level
Quack Sort versus Screw Machine: the parameters behind the verdict, then further details
ParameterQuack SortScrew Machine
PriceFreeFree
Rating4.9 (3K ratings)4.9 (445 ratings) — better
Positive reviews63.0% of reviews — better50.0% of reviews
Number of ratings3K — better445
Update frequencyEvery 5 daysEvery 4 days — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#99 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size403 MB368 MB
Age rating4+4+
DeveloperLE TECH CO.,LIMITEDTwist Games

Customer experience

Quack Sort

All ratings2,725 ratings
Positive98.3%
Neutral0.8%
Negative0.8%
Written reviews27 reviews
Positive63.0%
Neutral22.2%
Negative14.8%

Screw Machine

All ratings445 ratings
Positive98.7%
Neutral0.2%
Negative1.1%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

17 purchases

Quack Sort

One-time17
  • Mini Coin Pack$1.99
  • Small Offer$1.99
  • Starter Bundle$1.99
Show 14 more
  • Revive Offer1$1.99
  • Medium Offer$4.99
  • Quack Bundle$4.99
  • Revive Offer2$4.99
  • Small Coin Pack$7.99
  • Ducky Pass$9.99
  • Large Bundle$9.99
  • Ad-Free Bundle$11.99
  • Super Bundle$19.99
  • Big Coin Pack$29.99
  • Mega Bundle$39.99
  • Super Coin Pack$59.99
  • Mega Coin Pack$99.99
  • Epic Bundle$99.99
10 purchases

Screw Machine

One-time10
  • 1000 Coins$1.99
  • Fail Offer$4.99
  • 5000 Coins$7.99
Show 7 more
  • No Ads$7.99
  • Small Bundle$9.99
  • No Ads Bundle$12.99
  • 10000 Coins$14.99
  • Medium Bundle$19.99
  • Large Bundle$29.99
  • Mega Bundle$49.99

Questions

Is Quack Sort free?
Quack Sort is free to download, with in-app purchases available.
Is Screw Machine free?
Screw Machine is free to download, with in-app purchases available.
Which has better reviews, Quack Sort or Screw Machine?
Screw Machine is rated higher. Quack Sort averages 4.9 out of 5 from 3K ratings, while Screw Machine averages 4.9 from 445 ratings.
Do Quack Sort or Screw Machine have ads?
Both Quack Sort and Screw Machine show ads.
Which is updated more often, Quack Sort or Screw Machine?
Quack Sort ships an update every 5 days, and Screw Machine every 4 days. Most recently, Quack Sort was updated on October 23, 2026 and Screw Machine on October 20, 2026.

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