Comparison

DUO vs Guess Size

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

Head to head
About

DUO

Features
Read full description

DUO-ALIBI is a real-time multiplayer party game inspired by the alibi concept popularized by Squeezie. A CRIME HAS BEEN COMMITTED. Each team of 2 suspects receives an AI-generated alibi they must memorize together. Then, suspects are interrogated separately: if their answers contradict each other, they're busted! HOW TO PLAY: Create or join a game with a room code Each duo receives a unique alibi scenario to memorize Concertation phase: prepare your story together Interrogation phase: answer questions on your own Vote to identify the most suspicious team! FEATURES: 4 or 6 players per game 11 themes: Heist, Party, Zoo, Paranormal, Cruise, Camping, Casino, Space, Circus, Restaurant and Random 5, 7 or 10 questions per round Adjustable concertation timer (30s, 60s, 90s) Sign in with Apple, Google or as a guest Available in French and English

About

Guess Size

Features
Read full description

You see a dog next to a gorilla. A wine glass next to a child. One of them is drawn to scale. The other one is up to you. Drag to resize the red silhouette until it looks right, then hit Validate. The real size appears, and you find out just how wrong your brain was. It is called the Mandela Effect for a reason: we remember sizes we have never actually measured. HOW IT WORKS - A blue reference object is drawn to its true scale - Resize the red object by dragging it, pulling its handle, or pinching - Validate to reveal the real size and score up to 100 points - Five rounds per game, 500 points to chase DAILY CHALLENGE Everyone gets the same five objects each day. Compare your score with your friends and find out who actually has an eye for scale. PRACTICE MODE Play as much as you want with random objects from a library of 60: animals, vehicles, buildings, furniture, everyday objects and a few surprises. SHARE YOUR BEST ROUND Every game creates an image of your best guess next to the real size. Save it to your photos and post it wherever you like. No account. No ads. No data collected. Just you against your own sense of scale.

Screenshots

DUO3 screens
Guess Size3 screens

Verdict

The call

The clearest difference is update cadence: DUO at daily against Guess Size's every 3 days. DUO also leads on iOS requirement (15.1 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

DUO ships an update daily, Guess Size every 3 days. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

Scorecard2 real differences ยท 4 level
DUO versus Guess Size: the parameters behind the verdict, then further details
ParameterDUOGuess Size
PriceFreeFree
Update frequencyDaily โ€” betterEvery 3 days
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS15.1 โ€” better26.0
Further details โ€” not scored
Size39 MB2 MB
Age rating4+4+
DeveloperChristophe BoshraRemi Cassan

In-app purchases

None

DUO

No in-app purchases

None

Guess Size

No in-app purchases

Questions

Is DUO free?
DUO is free to download, with no in-app purchases.
Is Guess Size free?
Guess Size is free to download, with no in-app purchases.
Do DUO or Guess Size have ads?
Neither DUO nor Guess Size shows ads.
Which is updated more often, DUO or Guess Size?
DUO ships an update daily, and Guess Size every 3 days. Most recently, DUO was updated on November 5, 2026 and Guess Size on November 6, 2026.

Other comparisons