Comparison

Jo vs Alien Whack Attack

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

Head to head
About

Jo

Features
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Simple and Easy Shooting Game! Enjoy endless gameplay whenever you have a free moment! Step into a laid-back world inspired by the Jomon period and defend your village from the invasion of clay figures! • Press the Start button on the title screen to dive straight into the action! • Analyze the movement and attack patterns of various enemies to clear each wave. • Enemies get stronger with every wave you conquer. • Take down as many enemies as possible and aim for a high score! Each wave introduces enemies with unique attack patterns: • Lined up in a row for synchronized attacks. • Random attacks while drifting sideways. • Surrounding the player and firing diagonally. And that’s not all—bosses unleash special attacks and targeted strikes to keep you on your toes! Survive as long as you can and aim for the highest score!

About

Alien Whack Attack

Features
Read full description

Game Features • Simple Controls, Pure Fun Just tap the screen to play! The intuitive controls make it easy for anyone to jump right in. It’s perfect for quick breaks or relaxing moments—anytime, anywhere! • Unique Aliens & Scoring Strategy Different types of aliens appear at random, each giving you a different score when tapped. Will you aim for the rare, high-scoring aliens or build up your points steadily? But be careful: tapping the wrong targets, like animals, will cost you points! This fast-paced game challenges both your reflexes and your decision-making skills. The better you play, the more intense it gets—aliens pop out faster and in greater numbers! Stay sharp and keep your focus to stay in the game! • 3 Difficulty Levels & AI Battle Mode Choose from Easy, Normal, or Hard to suit your skill level. It’s great for both new players and seasoned pros! Plus, go head-to-head with AI opponents in an exciting challenge mode. Race for points in real-time and show off your skills! • Online Rankings Climb the global leaderboard and see how your reflexes measure up. Can you make it to the top? • Fun for All Ages With its cute design and simple controls, this game is fun for kids, teens, and adults alike! Perfect For: Those who love classic whack-a-mole games, are looking for a simple yet addictive game, want to test their reflexes and concentration, enjoy alien or space-themed games, or simply want to have fun during a short break. You’ll also love the intense battles against the AI! Free to Play! “Whack an Alien” is completely free to play (with optional ads). Just one game and you’ll be hooked! Tap those aliens and protect the planet with your trusty hammer! Notes • Fully playable offline • Internet connection required for rankings and online features • Please play safely—no real hammer-swinging, of course! Download now and become the ultimate Alien Defender!

Screenshots

Jo4 screens
Alien Whack Attack4 screens

Verdict

The call

The clearest difference is update cadence: Jo at every 11 days against Alien Whack Attack's every 5 weeks. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Jo ships an update every 11 days, Alien Whack Attack every 5 weeks. The most recent releases landed on September 18, 2026 and September 15, 2026 respectively.

Scorecard1 real difference · 5 level
Jo versus Alien Whack Attack: the parameters behind the verdict, then further details
ParameterJoAlien Whack Attack
PriceFreeFree
Update frequencyEvery 11 days — betterEvery 5 weeks
AdsYesYes
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size129 MB105 MB
Age rating4+4+
DeveloperSeima NakamotoShinya Okubo

In-app purchases

None

Jo

No in-app purchases

None

Alien Whack Attack

No in-app purchases

Questions

Is Jo free?
Jo is free to download, with no in-app purchases.
Is Alien Whack Attack free?
Alien Whack Attack is free to download, with no in-app purchases.
Do Jo or Alien Whack Attack have ads?
Both Jo and Alien Whack Attack show ads.
Which is updated more often, Jo or Alien Whack Attack?
Jo ships an update every 11 days, and Alien Whack Attack every 5 weeks. Most recently, Jo was updated on September 18, 2026 and Alien Whack Attack on September 15, 2026.

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