# Hippo Math - AR Brain Trainer — A Game to Play with Your Face

> Face-controlled educational game for counting and reaction training. (iPhone/iPad app by Vito Technology Inc..)

- Source: https://appshunter.io/ios/app/hippo-math-ar-brain-trainer/id1393901846 (this page in markdown: same URL + `.md`)
- Developer: [Vito Technology Inc.](https://appshunter.io/developer/289641503)
- Category: Education, Games, Casual, Puzzle
- Price: $0.99 with in-app purchases
- Rating: 4.80/5 from 18 App Store ratings
- Age rating: 4+
- Requires: iOS 10.0 · 141 MB
- Languages: American English
- Released: 2018-08-09
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/hippo-math-ar-brain-trainer/id1393901846/reviews.md

## What is Hippo Math?

***Meet the new face-controlled brain training game***

Count and catch fruits with your mouth to feed the hungry hippopotamus. Be careful,  don’t let him eat rotten fruits and avoid overeating!

The app uses the TrueDepth camera to recognize and detect the user’s facial expression. Face recognition is available only for iPhone X, to play on other devices, use touch control. 

Hippo Math is appropriate for both adults and children.

Starting the game, you’ll see a path with different fruits rolling down over it down to the hippo. You are also given a certain number of fruits necessary to eat. Your goal is to feed the hippo with the right amount of the necessary fruits. It is not a simple task as you should make the necessary facial expressions and count the eaten fruits simultaneously to win the game.

How to eat fruits?

◆ When the fruits reach the blue line, open and close your mouth as if trying to catch them. 
◆ If you don’t need any fruit - blow it off.

What are the rules?

◆ Do not overfeed the hippo - he should eat as many as shown on the screen.
◆ Do not let the hippo eat rotten fruits - he does not like them.
◆ Do not miss fruits that can be eaten.
◆ When counting fruits, you are supposed to add only 1, 2 and 3 of them. 
◆ The level of difficulty gradually increases. 
◆ The game continues until the first mistake.

At first, you are given hints (how many fruits are eaten, how many are needed to be eaten). When you get the certain score the hints disappear, and you should calculate by yourself. Later, you'll have to memorize the number of fruits necessary to eat, as it will disappear from the screen.

When all the necessary fruits are eaten, they stop rolling down. It means that the hippo is happy and you’ve won.

Improve reaction and counting skills with Hippo Math!

We are looking forward to receiving your feedback.

## Key features

- Face-controlled gameplay
- Catch fruits with mouth movements
- Avoid rotten fruits
- Counting and reaction training
- AR technology integration
- Gradually increasing difficulty

## Pricing and in-app purchases

Base price: $0.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | Free | one-time |



## Frequently asked questions about Hippo Math

### What is Hippo Math?

Hippo Math is an educational game that uses facial recognition to control a hippopotamus, requiring players to catch specific fruits and avoid rotten ones. It's designed to improve reaction time and counting skills.

### How does Hippo Math use facial recognition?

The app utilizes the TrueDepth camera to detect facial expressions, primarily opening and closing the mouth to catch fruits. This feature is available on iPhone X and later models.

### Can I play Hippo Math on devices without a TrueDepth camera?

Yes, if your device does not have a TrueDepth camera, you can still play Hippo Math using touch controls to interact with the game.

### What are the main gameplay mechanics in Hippo Math?

Players must open their mouth to catch desired fruits and blow to avoid unwanted ones, all while keeping track of the correct count needed to satisfy the hippo. The game ends on the first mistake.

### What age rating does Hippo Math have?

Hippo Math is rated '4+' and is considered appropriate for both children and adults looking to enhance cognitive skills.

### How often is Hippo Math updated?

Hippo Math was last updated on August 9, 2018, with version 1.0.0. Further update frequency information is not available in the provided data.

### What is the price of Hippo Math?

Hippo Math is a paid application, available for purchase at $0.99.

### Does Hippo Math have ads?

No, Hippo Math does not contain advertisements. It is a paid app with no in-app purchases mentioned.

## Version history (last 1 release)

### 1.0.0 — 2018-08-09

This app has been updated by Apple to display the Apple Watch app icon.

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All apps by Vito Technology Inc.: https://appshunter.io/developer/289641503

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*