Comparison

KittyKitty Add Subtract vs Undumb

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

Head to head
About

KittyKitty Add Subtract

This educational game helps preschoolers and kindergartners master basic addition and subtraction. It offers a unique interactive workspace with animated characters and a reward system to encourage practice and track progress.

Highlights
  • Addition and subtraction practice
  • Interactive workspace
  • Progress tracking
  • Difficulty adjustment
  • Reward system
  • Certificates of achievement
Features
Read full description

KittyKitty Add Subtract is a math game for teaching preschoolers and kindergartners the basic concept of addition and subtraction. Older kids may also benefit from practicing simple addition and subtraction and collect rewards. Prerequisites: - ability to count up to 20 - ability to read numbers, "+" and "-" signs * Knowledge of addition and subtraction is NOT required * Let the kid work out the answer! Unlike most of the early math educational games on the market, we not only just provide questions and answers. We also provide a working area for kids to work out the answers on their own... with wiggly KittyKitties! Guidance may be required for the first few questions, but you will be amazed by how fast your kid can understand the basic concept by adding and subtracting kitties. Progress tracking and difficulty adjustment The game saves the progress of each child and adjust the difficulty of the questions as the child progress. After the child completed a certain number of questions, he/she will get a certificate to acknowledge his/her achievement. Collect rewards and practice more! Practice makes perfect. A reward system to collect KittyKitty's outfits is in place to encourage kids to do more questions. Free to play and only one ad per game session We understand how annoying it is to have ads popping up while your child is playing games. So we limited the ads to only show once at the beginning of the game. Or you can remove ads with a cost.

About

Undumb

This app offers daily brain workouts designed to enhance creativity, critical thinking, and focus, especially for those using AI tools regularly. It provides hand-crafted puzzles to combat 'AI-brain-drain' and offers a cognitive profile to track progress.

Highlights
  • Daily brain workouts
  • Enhances creativity
  • Improves critical thinking
  • Boosts focus
  • Cognitive profile tracking
  • AI-brain-drain combat
Features
Read full description

Undumb is a short daily workout backed by a Harvard-educated forensic psychiatrist to keep your brain sharp when using AI regularly. Workouts help with creativity, critical thinking, and focus. We built Undumb because hard thinking is a skill worth practicing. In the modern workplace, AI tools can make work faster and are often becoming required by employers. We still want to read carefully, notice weak evidence, make our own calls, and explain what we think but the modern pace of work with AI doesn't always allow for that. Undumb offers short daily questions that help anyone deliberately train the parts of their brain that over-using AI impacts. Think of these puzzles as a workout or gym routine for your brain. Each puzzle is hand crafted with intention to help people experiencing AI-brain-drain. Your first seven workouts are free. Complete Workout 7 to unlock your Cognitive Profile, with starting scores for Creativity, Critical thinking, and Focus. As you progress further, you can see how your scores are trending over time. Membership unlocks new daily workouts after Workout 7. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

KittyKitty Add Subtract4 screens
Undumb4 screens

Verdict

The call

The clearest difference is rating: Undumb at 5.0 against KittyKitty Add Subtract's 4.7. KittyKitty Add Subtract's advantage is ratings volume (13 vs 3) and iOS requirement (12.0 vs 17.0). On price, update cadence, ads and in-app purchases 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. KittyKitty Add Subtract sells 10 one-off in-app purchases and Undumb sells 2 in-app purchases, starting at $5.00 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Undumb holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 13 and 3 respectively.

UpkeepUpdate frequency

KittyKitty Add Subtract ships an update every 4 days, Undumb every 9 days. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.

Scorecard3 real differences · 7 level
KittyKitty Add Subtract versus Undumb: the parameters behind the verdict, then further details
ParameterKittyKitty Add SubtractUndumb
PriceFreeFree
Rating4.7 (13 ratings)5.0 (3 ratings) — better
Positive reviews90.0% of reviews—
Number of ratings13 — better3
Update frequencyEvery 4 days — betterEvery 9 days
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size95 MB53 MB
Age rating4+4+
DeveloperAngry Baby Studios, LLCFigLantern LLC

Customer experience

KittyKitty Add Subtract

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews10 reviews
Positive90.0%
Neutral0.0%
Negative10.0%

Undumb

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

10 purchases

KittyKitty Add Subtract

One-time10
  • Item Set: Love Angel$0.99
  • Item Set: Naughty Devil$0.99
  • Item Set: Ballerina$0.99
Show 7 more
  • Item Set: Cutie Bunny$0.99
  • Item Set: Polka Dot Clown$0.99
  • Item Set: Handsome Man$0.99
  • Item Set: Nerdy Panda$0.99
  • Item Set: Ahoy! Pirate$0.99
  • Item Set: Cool Tomato$0.99
  • Remove Ads$2.99
2 purchases

Undumb

Subscriptions2
  • Undumb Monthly7 Days trial$5.001 Month
  • Undumb Annual7 Days trial$30.001 Year

Questions

Is KittyKitty Add Subtract free?
KittyKitty Add Subtract is free to download, with in-app purchases available.
Is Undumb free?
Undumb is free to download, with in-app purchases available.
Which has better reviews, KittyKitty Add Subtract or Undumb?
Undumb is rated higher. KittyKitty Add Subtract averages 4.7 out of 5 from 13 ratings, while Undumb averages 5.0 from 3 ratings.
Do KittyKitty Add Subtract or Undumb have ads?
Neither KittyKitty Add Subtract nor Undumb shows ads.
Which is updated more often, KittyKitty Add Subtract or Undumb?
KittyKitty Add Subtract ships an update every 4 days, and Undumb every 9 days. Most recently, KittyKitty Add Subtract was updated on November 2, 2026 and Undumb on November 6, 2026.

Other comparisons