Comparison

Kahoot! Big Numbers vs Umbra

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

Head to head
About

Kahoot! Big Numbers

This game makes learning about large numbers and arithmetic engaging for children. Players embark on an adventure, using addition and subtraction to manage resources and progress through worlds. It offers over 10 hours of gameplay with no reading required.

Highlights
  • Master long addition and subtraction
  • Base-ten system learning
  • Adventure-based gameplay
  • Over 10 hours of content
  • No reading required
  • Collect and trade resources
  • Furnish and decorate houses
Features
Read full description

Kahoot! Big Numbers by DragonBox is an award-winning math learning game that makes it easy for kids to master the math behind BIG numbers. Kids as young as 6 can learn how the base-ten system works and how to perform long additions and subtractions. **REQUIRES A SUBSCRIPTION** Access to the contents and functionality of this app requires a subscription to Kahoot! Kids. The subscription starts with a 7 day free trial and can be cancelled at any time before the end of the trial. The Kahoot! Kids subscription gives your family access to premium Kahoot! features and 3 award-winning learning apps for math and reading. HOW THE GAME WORKS Kahoot! Big Numbers by DragonBox takes your child on an adventure to the magical land of Noomia. Your child will have to gather and trade resources to acquire new items and unlock new worlds. To advance in the game, your child must add and subtract to manage their resources. Over the course of the game, quantities will get larger and operations will get harder. Your child will have to perform 1000s of operations and gain complete mastery of long additions and subtractions to complete the game. FEATURES - An innovative interface that makes solving long additions and subtractions easy - An infinite amount of additions and subtractions to solve. - Over 10 hours of engaging gameplay - No reading required - 6 worlds to explore - Learn to count in different languages - 10 Different resources to collect and trade - 4 Noom houses to furnish and decorate - No third-party advertising - No in-app purchases Kahoot! Big Numbers by DragonBox is based on the same pedagogical principles as the other games in the award-winning DragonBox series, and works by integrating the learning seamlessly into the gameplay, no quizzes or mindless repetitions. Every interaction in Kahoot! Big Numbers by DragonBox is designed to heighten your child’s understanding of mathematics while motivating them to keep learning through play and exploration. Terms and Conditions: https://kahoot.com/terms-and-conditions/ Privacy Policy https://kahoot.com/privacy-policy/

About

Umbra

Features
Read full description

The Umbra App shows you exactly what a solar eclipse looks like from your location—not just whether one is happening, but how much of the sun will be obscured, when it begins, when it reaches its peak, and how high the sun will be above your horizon during the eclipse. The app works completely offline, and all calculations are performed on your device.

Screenshots

Kahoot! Big Numbers4 screens
Umbra2 screens

Verdict

The call

The clearest difference is in-app purchases: Umbra at none against Kahoot! Big Numbers's 3. Kahoot! Big Numbers's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 26.0). On price, update cadence and ads 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. Kahoot! Big Numbers sells 3 in-app purchases, starting at $5.99 per month. Umbra asks for nothing beyond the download.

UpkeepUpdate frequency

Kahoot! Big Numbers ships an update every 2 months, Umbra every 4 weeks. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Kahoot! Big Numbers versus Umbra: the parameters behind the verdict, then further details
ParameterKahoot! Big NumbersUmbra
PriceFreeFree
Rating4.6 (1.6K ratings) — better—
Positive reviews48.9% of reviews—
Number of ratings1.6K — better—
Update frequencyEvery 2 monthsEvery 4 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscription—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better26.0
Further details — not scored
Size361 MB2 MB
Age rating4+4+
DeveloperKahoot ASAJustus Beyer

Bugs and requests

Kahoot! Big Numbers

Reported bugs

4 issues
  • Maalesef ⭐️⭐️⭐️
  • Madenci bölümünde ilerlenmiyor
  • Login screen freezes
  • Incompatible with older devices

Requested features

4 requests
  • Maalesef ⭐️⭐️⭐️
  • Madenci bölümünde ilerlenmiyor
  • Dark mode option
  • Advanced analytics dashboard

Umbra

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Kahoot! Big Numbers

Subscriptions2
  • Kahoot! Kids Monthly$5.991 Month
  • Kahoot! Kids Annual7 Days trial$35.991 Year
One-time1
  • One-time Purchase$19.99
None

Umbra

No in-app purchases

Questions

Is Kahoot! Big Numbers free?
Kahoot! Big Numbers is free to download, with in-app purchases available.
Is Umbra free?
Umbra is free to download, with no in-app purchases.
Do Kahoot! Big Numbers or Umbra have ads?
Neither Kahoot! Big Numbers nor Umbra shows ads.
Which is updated more often, Kahoot! Big Numbers or Umbra?
Kahoot! Big Numbers ships an update every 2 months, and Umbra every 4 weeks. Most recently, Kahoot! Big Numbers was updated on November 7, 2026 and Umbra on October 31, 2026.

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