# Space Numbers Basic Facts vs Kai's Virtual Viewer

The clearest difference is rating: Space Numbers Basic Facts at 4.0 against Kai's Virtual Viewer's 3.0. Space Numbers Basic Facts also leads on iOS requirement (9.3 vs 15.0). Kai's Virtual Viewer's advantage is in-app purchases (none vs 1) and device support (3 vs 1). On price, ratings volume and ads there is nothing between them.

Both are free to download. Space Numbers Basic Facts sells 1 one-off in-app purchase. Kai's Virtual Viewer asks for nothing beyond the download.

Space Numbers Basic Facts holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

## The numbers

| Metric | Space Numbers Basic Facts | Kai's Virtual Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/space-numbers-basic-facts/id1367824193/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/kais-virtual-viewer/id1460744916/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 19 MB | 351 MB |
| Requires iOS | **9.3** | 15.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Math Adventures](https://appshunter.io/developer/586366341) | [Kai's Education Limited](https://appshunter.io/developer/1460744915) |

## What reviewers say

### Space Numbers Basic Facts

[App page](https://appshunter.io/ios/app/space-numbers-basic-facts/id1367824193)

This multiplayer game helps children practice addition and subtraction by capturing numbers to reach a target total. Players race to "Blast Off" first to win. It's a fun way to build essential math fact recall skills.

**Highlights:** Multiplayer game for 1-4 players, 10 games focused on place value, Develops fine motor skills, Progressive difficulty levels, Free play on specific games

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all games | $0.99 | one-time |


### Kai's Virtual Viewer

[App page](https://appshunter.io/ios/app/kais-virtual-viewer/id1460744916)

This app brings physical robots to life in augmented reality, allowing users to code their movements and complete missions. It bridges the gap between the physical and virtual worlds for an interactive learning experience.

**Highlights:** Augmented Reality (AR) integration, Code robot movements, Complete virtual missions, Themed mat interaction, Cross-device coding (Kai Blockly), Virtual Reality (VR) mode available

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Space Numbers Basic Facts free?

Space Numbers Basic Facts is free to download, with in-app purchases available.

### Is Kai's Virtual Viewer free?

Kai's Virtual Viewer is free to download, with no in-app purchases.

### Which has better reviews, Space Numbers Basic Facts or Kai's Virtual Viewer?

Space Numbers Basic Facts is rated higher. Space Numbers Basic Facts averages 4.0 out of 5 from 1 ratings, while Kai's Virtual Viewer averages 3.0 from 2 ratings.

### Do Space Numbers Basic Facts or Kai's Virtual Viewer have ads?

Neither Space Numbers Basic Facts nor Kai's Virtual Viewer shows ads.

---

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