Comparison

OK! Bird vs Pizza Up! Stack Tower Maker

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

Head to head
About

OK! Bird

Experience a visually stunning 3D game with unique gameplay. Navigate a cute bird through a fantastic world, collecting items and encountering special characters. Enjoy high-quality graphics and engaging challenges.

Highlights
  • High-quality 3D graphics with Global Illumination
  • Special item boxes with power-ups
  • Encounter various cameos and hidden characters
  • Dynamic flying speed increase
  • Achievement medal collecting
  • iOS Game Center support
Features
Read full description

Beautiful and highest quality of 3D game in the history of iOS. (It has also the excellent game play.) The zany and cute bird is flying, OK! Bird. OK! Bird gives you totally different visual experience than other ‘Flappy’ styled games. Let’s feel the fantastic world with your birds ! There are item boxes in the game, you can get ‘Star’ and ‘Quick Dog’ from the boxes. You can joy the game with; 1) The best quality of graphics through 'Real Time Global Illumination. 2) Special itmes from '?' Boxes. The Star : you can get higher score Quick Dog : The dog help you to get more 2 points. 3) Various cameos will appear while you are playing the game. 4) Great 3D effects with the change of camera angle. 5) As you play the game, the flying speed will be faster. 6) Achievement medal collecting 7) Supporting iOS Game Center Even more suprising is all these functions were implemented by just one engineer! :- ) While you are flying, you will meet hidden characters, let’s find it !!

About

Pizza Up! Stack Tower Maker

Read full description

Pizza Up! is a cozy retro pixel stacking game. Tap at the perfect moment to stack pizza boxes into a tower that climbs higher and higher. One wrong tap and your pizza tower comes crashing down! Start in a warm, nostalgic pizzeria filled with neon signs and checkered tables, then take your stacks through bustling city skylines and even into outer space. Each world brings fresh visuals, new challenges and that addictive "just one more try" feeling. Stack it. Don't drop it. Key Features: • Endless one-tap stacking with simple arcade controls • Hand-crafted 8-bit style pixel art with a cozy pizzeria and cafe vibe • Multiple themed worlds: Pizzeria → City → Space • Power-ups and upgrades to build taller towers • Relaxing music and satisfying sound effects • A shop to customize your experience • Beat your high scores and climb global leaderboards • Easy to learn, impossible to put down Whether you have 30 seconds or an hour, Pizza Up! delivers pure stacking joy. Perfect for fans of casual arcade and retro games, pixel art lovers, and anyone who enjoys a relaxing food game. Can you become the ultimate pizza maker and build the tallest tower? Download Pizza Up! today and start stacking!

Screenshots

OK! Bird4 screens
Pizza Up! Stack Tower Maker4 screens

Verdict

The call

The clearest difference is in-app purchases: OK! Bird at none against Pizza Up! Stack Tower Maker's 7. OK! Bird also leads on ads (none vs shown) and iOS requirement (6.0 vs 15.0). Pizza Up! Stack Tower Maker's advantage is update cadence (monthly vs every 2 months). 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. Pizza Up! Stack Tower Maker sells 7 one-off in-app purchases. OK! Bird asks for nothing beyond the download.

UpkeepUpdate frequency

OK! Bird ships an update every 2 months, Pizza Up! Stack Tower Maker monthly. The most recent releases landed on October 24, 2026 and October 3, 2026 respectively.

Scorecard4 real differences · 6 level
OK! Bird versus Pizza Up! Stack Tower Maker: the parameters behind the verdict, then further details
ParameterOK! BirdPizza Up! Stack Tower Maker
PriceFreeFree
Rating3.0 (2 ratings) — better—
Positive reviews92.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 2 monthsMonthly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS6.0 — better15.0
Further details — not scored
Size9 MB64 MB
Age rating4+4+
DeveloperNorthriversoftYoussef Moukhabir

In-app purchases

None

OK! Bird

No in-app purchases

7 purchases

Pizza Up! Stack Tower Maker

One-time7
  • BBQ Smokehouse Box$0.99
  • Supreme Deluxe Box$0.99
  • Black Truffle Box$0.99
Show 4 more
  • Ocean Seafood Box$0.99
  • Remove Ads$0.99
  • Cyber Desk Map$3.99
  • Everything Bundle$4.99

Questions

Is OK! Bird free?
OK! Bird is free to download, with no in-app purchases.
Is Pizza Up! Stack Tower Maker free?
Pizza Up! Stack Tower Maker is free to download, with in-app purchases available.
Do OK! Bird or Pizza Up! Stack Tower Maker have ads?
Pizza Up! Stack Tower Maker shows ads; OK! Bird does not.
Which is updated more often, OK! Bird or Pizza Up! Stack Tower Maker?
OK! Bird ships an update every 2 months, and Pizza Up! Stack Tower Maker monthly. Most recently, OK! Bird was updated on October 24, 2026 and Pizza Up! Stack Tower Maker on October 3, 2026.

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