Comparison

Kidz vs NumberSlam®

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

Head to head
About

Kidz

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
Read full description

'Kidz Knockout Operations' is a fun way of learning math operations - addition and multiplication. The game will ask the player to choose from two operations - Addition or Multiplication. If nothing is chosen by the player, the game sets the default operation to 'Addition'. With Addition, the player has to hit the numbered balls to make a sum equivalent to the monster's number. As the game progresses from 'easy', 'medium', and 'hard' levels, the numbered balls increase. For the easy level, the balls are numbered from 1 - 9; the balls in the medium level are numbered in the range 10 - 15. The balls in the hard level are numbered in the range 15 - 20. In Multiplication, the player's goal is to hit the numbered balls to make a product equivalent to the monster's number. In both math operations, the player cannot hit the numbered ball, which is the same as the monster's number. Happy playing :-)

About

NumberSlam®

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
Read full description

Finally, an engaging, exciting, and fast-paced mental math skills game. NumberSlam® was created to improve your mental math skills on a mobile device. NumberSlam® is a digital remake of the popular math game “Board Slam” played in Classical Conversations Communities’ classrooms around the world. Whether playing for fun or practice, NumberSlam® is THE mental math game for you. Perfect for CC students, their parents or anyone that enjoys a good mental math challenge. NumberSlam® is Ad-Free & tracking-free so that your game-play is safe and free from distractions. We hope you like it, now Get Slamming!

Screenshots

Kidz3 screens
NumberSlam®4 screens

Verdict

The call

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.

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

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard6 real differences · 4 level
Kidz versus NumberSlam®: the parameters behind the verdict, then further details
ParameterKidzNumberSlam®
Price$1.99Free — better
Rating5.0 (1 ratings) — better4.8 (8 ratings)
Positive reviews—100.0% of reviews
Number of ratings18 — better
Update frequencyEvery 38 monthsEvery 6 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.013.0 — better
Further details — not scored
Size1 MB31 MB
Age rating4+4+
DeveloperGomathy ShankaranPIRUX, LLC

Customer experience

Kidz

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

NumberSlam®

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Kidz

No in-app purchases

1 purchases

NumberSlam®

One-time1
  • Activate NumberSlam$7.99

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.

Other comparisons