# Kidz vs NumberSlam®

The clearest difference is price: NumberSlam® at Free against Kidz's $1.99. NumberSlam® also leads on update cadence (every 6 days vs every 38 months) and ratings volume (8 vs 1). Kidz's advantage is in-app purchases (none vs 1) and rating (5.0 vs 4.8). On ads, device support and iOS requirement there is nothing between them.

NumberSlam® is free to download; Kidz costs $1.99 up front. NumberSlam® sells 1 one-off in-app purchase. Kidz asks for nothing beyond the download.

Kidz holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: NumberSlam® has 8 ratings behind it against 1, so its average is the more settled of the two.

Kidz ships an update every 38 months, NumberSlam® every 6 days. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Kidz | NumberSlam® |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/kidz-knockout-operations/id1510014095/reviews)** | [4.8 (8 ratings)](https://appshunter.io/ios/app/numberslam/id1618839777/reviews) |
| Number of ratings | 1 | **8** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 6 days** |
| Monetization | Paid | **Free** |
| Size | 1 MB | 31 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gomathy Shankaran](https://appshunter.io/developer/503956143) | [PIRUX, LLC](https://appshunter.io/developer/1618629503) |

## What reviewers say

### Kidz

[App page](https://appshunter.io/ios/app/kidz-knockout-operations/id1510014095)

Learn addition and multiplication through an engaging game. Solve math problems by hitting numbered balls to match a monster's target number, with increasing difficulty levels. Offers a fun and interactive way to practice essential math skills.

**Highlights:** Addition and multiplication practice, Adjustable difficulty levels (easy, medium, hard), Interactive gameplay with numbered balls, Targeted math problem solving, Default operation setting

**Features:** macOS Compatibility

**In-app purchases:** none


### NumberSlam®

[App page](https://appshunter.io/ios/app/numberslam/id1618839777)

This is a fast-paced mental math game designed to enhance your calculation skills on mobile. It's a digital adaptation of a popular classroom game, offering an engaging way to practice math for fun or improvement. The game is ad-free and tracks no user data for a safe, distraction-free experience.

**Highlights:** Improves mental math skills, Engaging and fast-paced gameplay, Digital remake of a popular classroom game, Ad-free experience, Tracking-free for user privacy, Suitable for practice or fun

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Activate NumberSlam | $7.99 | one-time |


## Frequently asked questions

### Is Kidz free?

Kidz costs $1.99, with no in-app purchases.

### Is NumberSlam® free?

NumberSlam® is free to download, with in-app purchases available.

### Which has better reviews, Kidz or NumberSlam®?

Kidz is rated higher. Kidz averages 5.0 out of 5 from 1 ratings, while NumberSlam® averages 4.8 from 8 ratings.

### Do Kidz or NumberSlam® have ads?

Neither Kidz nor NumberSlam® shows ads.

### Which is updated more often, Kidz or NumberSlam®?

Kidz ships an update every 38 months, and NumberSlam® every 6 days. Most recently, Kidz was updated on October 16, 2026 and NumberSlam® on October 24, 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.*