# Kahoot! Big Numbers vs Umbra

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.

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.

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.

## The numbers

| Metric | Kahoot! Big Numbers | Umbra |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (1.6K ratings)](https://appshunter.io/ios/app/kahoot-big-numbers-dragonbox/id1529174828/reviews)** | — |
| Number of ratings | **1.6K** | — |
| Positive reviews | 48.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Monetization | Subscription | — |
| Size | 361 MB | 2 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kahoot ASA](https://appshunter.io/developer/1131203559) | [Justus Beyer](https://appshunter.io/developer/6798668049) |

## What reviewers say

### Kahoot! Big Numbers

[App page](https://appshunter.io/ios/app/kahoot-big-numbers-dragonbox/id1529174828)

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:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kahoot! Kids Monthly | $5.99 | per month |
| Kahoot! Kids Annual | $35.99 | per year |
| One-time Purchase | $19.99 | one-time |

**What reviewers like**

- 👍 Math made fun
- 🚀 Great game
- 🚀 Something about apples
- 🚀 It's Soo Magical!
- 🚀 Kahoot! is the best

**What reviewers complain about**

- 🐛 If you let the subscription lapse, your child will lose all their progress
- 🐛 u cant draw 4
- 🐛 Not challenging enough. Can only trial with annual subscription
- 💡 In app purchases are the worst :(
- 🐛 Have to pay.

**Reported bugs**

- Maalesef ⭐️⭐️⭐️
- Madenci bölümünde ilerlenmiyor
- Login screen freezes
- Incompatible with older devices

**Requested features**

- Maalesef ⭐️⭐️⭐️
- Madenci bölümünde ilerlenmiyor
- Dark mode option
- Advanced analytics dashboard


### Umbra

[App page](https://appshunter.io/ios/app/umbra-solar-eclipse-tracker/id6798668047)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


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