# KING OF MATH vs RU Mobile

The clearest difference is in-app purchases: RU Mobile at none against KING OF MATH's 5. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. KING OF MATH sells 5 one-off in-app purchases. RU Mobile asks for nothing beyond the download.

## The numbers

| Metric | KING OF MATH | RU Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (1.3K ratings)](https://appshunter.io/ios/app/king-of-math-math-learner/id1491890239/reviews)** | — |
| Number of ratings | **1.3K** | — |
| Positive reviews | 44.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 102 MB | 66 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [wonderkind GmbH](https://appshunter.io/developer/408718588) | [PT SOLUSI INFOTECH SEMESTA INDONESIA](https://appshunter.io/developer/1564384743) |

## What reviewers say

### KING OF MATH

[App page](https://appshunter.io/ios/app/king-of-math-math-learner/id1491890239)

Master arithmetic operations like addition, subtraction, multiplication, and division with this engaging learning app. It features intuitive handwriting input and adaptive difficulty to suit all ages, making learning fun and effective.

**Highlights:** Addition practice, Subtraction practice, Multiplication practice, Division practice, Handwriting input, Adaptive difficulty, Reward system

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subtraction Deck | $1.99 | one-time |
| Large multiplication tables | $1.99 | one-time |
| Small multiplication tables | $1.99 | one-time |
| Division | $1.99 | one-time |
| Full Version Bundle | $4.99 | one-time |

**What reviewers like**

- 👍 Helps kids learn math
- 🚀 Motivates kids to learn faster
- 👍 Good for toddlers and young children
- 👍 Improves math skills

**What reviewers complain about**

- 🐛 Poor handwriting recognition, especially for numbers like 6, 9
- 🐛 Inconsistent recognition of correct answers
- 🐛 Frustrating for kids when it doesn't register their input
- 🐛 Needs better timer settings for beginners

**Reported bugs**

- Doesn't recognize simple numbers like 4 and 9
- Accepts wrong answers as correct
- Slow response time on some devices

**Requested features**

- Allow keyboard input or numeric keypad
- Calibration option for handwriting recognition
- Difficulty levels for different age groups
- More advanced math operations like multiplication and division


### RU Mobile

[App page](https://appshunter.io/ios/app/ru-mobile/id6760283718)

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

**In-app purchases:** none


## Frequently asked questions

### Is KING OF MATH free?

KING OF MATH is free to download, with in-app purchases available.

### Is RU Mobile free?

RU Mobile is free to download, with no in-app purchases.

### Do KING OF MATH or RU Mobile have ads?

Neither KING OF MATH nor RU Mobile shows ads.

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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.*