# I.Q. vs Idle Zombies

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.

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.

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.

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.

## The numbers

| Metric | I.Q. | Idle Zombies |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.9 (7 ratings)](https://appshunter.io/ios/app/iq-test/id407003328/reviews) | **[4.8 (68K ratings)](https://appshunter.io/ios/app/idle-zombies/id1370346970/reviews)** |
| Number of ratings | 7 | **68K** |
| Positive reviews | 23.3% of reviews | **53.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 52 MB | 144 MB |
| Requires iOS | **9.0** | 12.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Pedro Navarro](https://appshunter.io/developer/391493904) | [Lion Studios](https://appshunter.io/developer/1362220666) |

## What reviewers say

### I.Q.

[App page](https://appshunter.io/ios/app/iq-test/id407003328)

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:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tickets x10 | $0.99 | one-time |
| Tickets x100 | $1.99 | one-time |
| Remove ADS | $2.99 | one-time |
| Unlimited Tickets | $2.99 | one-time |


### Idle Zombies

[App page](https://appshunter.io/ios/app/idle-zombies/id1370346970)

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:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Micro Diamond Package | $0.99 | one-time |
| Gift For New Player | $0.99 | one-time |
| Super Weapon Package | $0.99 | one-time |
| Weapons of destruction | $0.99 | one-time |
| DAM of Knife x 99 | $0.99 | one-time |
| Much More Money | $1.99 | one-time |
| No Ad Forever | $2.99 | one-time |
| Week Package | $2.99 | one-time |
| Super Discount Package | $9.99 | one-time |
| City Pass | $9.99 | one-time |

**What reviewers like**

- 🚀 Fast gameplay
- 💰 Earn money quickly
- 🔥 Exciting and addictive
- 👍 Great time killer

**What reviewers complain about**

- 🐛 Frequent crashes and glitches
- 💰 Aggressive monetization
- 🕰️ Slow progression at higher levels
- 🔍 Lack of instructions/tutorials

**Reported bugs**

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

**Requested features**

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


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*