Comparison

I.Q. vs Idle Zombies

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

Head to head
About

I.Q.

Calculate your intelligence quotient with this app. Perform various tests, including a time-trial mode, and share them with family and friends to see who is the most intelligent. Create multiple user profiles to track progress and compare results.

Highlights
  • Calculate intelligence quotient
  • Multiple test types
  • Time Trial Test
  • Create multiple users
  • Share tests with friends and family
Features
Read full description

Discover your intelligence quotient with this innovative and intuitive app. Share the tests with your family and friends and find out who is the most intelligent. Perform different test with lots of questions, including a Time Trial Test. FEATURES: • USERS Create different users and share the tests with your family and friends and discover who's the most intelligent!

About

Idle Zombies

Defend cities from a relentless zombie horde in this idle defense game. Upgrade your arsenal with earned currency, unlock unique weapons and skills, and battle legendary bosses. It's an easy-to-learn, tough-to-master experience that tests your swiping and tapping skills.

Highlights
  • Idle defense gameplay
  • Upgrade weapons and artillery
  • Battle legendary bosses
  • Unlock unique skills and weapons
  • Crazy Mode for increased challenge
  • Daily login rewards
Features
Read full description

The zombies are invading and only you can defend the cities from total destruction! Surround the gate with the best arsonal you can afford. Swipe away at the zombies with your knife for some extra punch! The more zombies you eliminate the better the guns you can afford! Battle legendary bosses and travel to different cities to defend mankind in this epic idle game. This heartstopping, easy to play, but tough to master zombie tycoon game will test your swiping, focus and tapping skills. Unlock crazy weapons such as an electric fence, air raids, and even a mighty DOG! Can you become the ultimate zombie slayer and save the city? This action packed idle defense game will test your grit. The relentless zombie horde keep coming and it’s up to you to defend the city! How far can you make it? Do you have what it takes to take them down? Upgrade your artillery with the money you earn from slaying the waves of zombies. Travel through space and time defending different locations from the onslaught. The further you get the more challenging the game becomes! Start your adventure now! The one thing you have to ask yourself is: can you handle the CRAZY MODE? Game Features: 1. Crazy Mode This idle game has non-stop adrenaline filled action, and that’s not even mentioning the Crazy Mode. The horde gets stronger and harder. An alarm will go off if they get too close to the gate. Can you stay calm and defend the city? Or will you lose? 2. Battle legendary monsters Gotta slay them all! It will take everything you got to take down the huge epic boss monsters invading the cities! 3. Log on for amazing gifts Need some help progressing? The more you play and defend, the better your rewards you get. 4. Level up your items The more you kill the more money you make. The more you earn the better your equipment becomes. Only then will you become the best zombie slayer in town. 5. Free to play with no WIFI needed! Swipe and tap anytime, anywhere for free! No internet connection is needed! 6. Unique skills and weapons to Unlock! Need help pushing back those zombies? Unlock special abilities like airstrikes or an electric fence to evaporate the dead. Don’t forget the nukes. It's time to become the hero you were destined to become and start defending the world. This is the best incremental zombie simulation there is. Never miss a dull moment with this easy to learn and easy to play game that is almost IMPOSSIBLE to master. Use your guns and knives to slay that horde! Start your mission and never stop destroying! Can you face the walking dead? Visit https://lionstudios.cc/contact-us/ if have any feedback, need help on beating a level or have any awesome ideas you would like to see in the game! From the Studio that brought you Happy Glass, Flip Trickster and Love Balls! Follow us to get news and updates on our other Award Winning titles; https://lionstudios.cc/ Facebook.com/LionStudios.cc Instagram.com/LionStudioscc Twitter.com/LionStudiosCC Youtube.com/c/LionStudiosCC

Screenshots

I.Q.4 screens
Idle Zombies4 screens

Verdict

The call

The clearest difference is rating: Idle Zombies at 4.8 against I.Q.'s 2.9. Idle Zombies also leads on review sentiment (54% vs 23%) and ratings volume (68K vs 7). I.Q.'s advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 3 weeks). On price, in-app purchases, monetization model 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. I.Q. sells 4 one-off in-app purchases and Idle Zombies 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

Idle Zombies holds the better App Store score, 4.8 against 2.9. That said, the two scores are not equally well evidenced: Idle Zombies has 68K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 23% of I.Q.'s written reviews are positive against 54% of Idle Zombies's.

UpkeepUpdate frequency

I.Q. ships an update every 2 weeks, Idle Zombies every 3 weeks. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.

Scorecard6 real differences · 4 level
I.Q. versus Idle Zombies: the parameters behind the verdict, then further details
ParameterI.Q.Idle Zombies
PriceFreeFree
Rating2.9 (7 ratings)4.8 (68K ratings) — better
Positive reviews23.3% of reviews53.9% of reviews — better
Number of ratings768K — better
Update frequencyEvery 2 weeks — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better12.3
Further details — not scored
Size52 MB144 MB
Age rating4+12+
DeveloperPedro NavarroLion Studios

Customer experience

I.Q.

All ratings7 ratings
Positive42.9%
Neutral14.3%
Negative42.9%
Written reviews30 reviews
Positive23.3%
Neutral10.0%
Negative66.7%

Idle Zombies

All ratings67,661 ratings
Positive93.7%
Neutral3.4%
Negative3.0%
Written reviews592 reviews
Positive53.9%
Neutral8.4%
Negative37.7%

Bugs and requests

I.Q.

Not enough reviews yet to summarise bugs or requests.

Idle Zombies

Reported bugs

4 issues
  • Weapons freezing at high upgrade levels
  • Offline revenue not tracking correctly
  • Resets causing loss of progress
  • Ads not working as intended

Requested features

4 requests
  • Auto-upgrade option for weapons
  • More variety in weapon types and abilities
  • Offline progress improvements
  • Better boss fight mechanics

In-app purchases

4 purchases

I.Q.

One-time4
  • Tickets x10$0.99
  • Tickets x100$1.99
  • Remove ADS$2.99
Show 1 more
  • Unlimited Tickets$2.99
10 purchases

Idle Zombies

One-time10
  • Micro Diamond Package$0.99
  • Gift For New Player$0.99
  • Super Weapon Package$0.99
Show 7 more
  • Weapons of destruction$0.99
  • DAM of Knife x 99$0.99
  • Much More Money$1.99
  • No Ad Forever$2.99
  • Week Package$2.99
  • Super Discount Package$9.99
  • City Pass$9.99

Questions

Is I.Q. free?
I.Q. is free to download, with in-app purchases available.
Is Idle Zombies free?
Idle Zombies is free to download, with in-app purchases available.
Which has better reviews, I.Q. or Idle Zombies?
Idle Zombies is rated higher. I.Q. averages 2.9 out of 5 from 7 ratings, while Idle Zombies averages 4.8 from 68K ratings.
Do I.Q. or Idle Zombies have ads?
Idle Zombies shows ads; I.Q. does not.
Which is updated more often, I.Q. or Idle Zombies?
I.Q. ships an update every 2 weeks, and Idle Zombies every 3 weeks. Most recently, I.Q. was updated on October 23, 2026 and Idle Zombies on October 26, 2026.

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