# Airro E6B vs Lotto Engine 3D

The clearest difference is price: Lotto Engine 3D at Free against Airro E6B's $1.99. Lotto Engine 3D also leads on update cadence (daily vs every 40 months) and iOS requirement (13.0 vs 16.1). Airro E6B's advantage is in-app purchases (none vs 2). On ads and device support there is nothing between them.

Lotto Engine 3D is free to download; Airro E6B costs $1.99 up front. Lotto Engine 3D sells 2 in-app purchases, starting at $1.99 per 7 days. Airro E6B asks for nothing beyond the download.

Airro E6B ships an update every 40 months, Lotto Engine 3D daily. The most recent releases landed on September 12, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Airro E6B | Lotto Engine 3D |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lotto-engine-3d/id6473097818/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 40 months | **Daily** |
| Monetization | — | Subscription |
| Size | 1 MB | 19 MB |
| Requires iOS | 16.1 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Christian van der Meij](https://appshunter.io/developer/571706052) | [何均 邓](https://appshunter.io/developer/1621073530) |

## What reviewers say

### Airro E6B

[App page](https://appshunter.io/ios/app/airro-e6b/id6444861966)

**Features:** macOS Compatibility

**In-app purchases:** none


### Lotto Engine 3D

[App page](https://appshunter.io/ios/app/lotto-engine-3d/id6473097818)

This app simulates the physics of balls moving within a container, acting as a fun random number and ball generator. It's a useful tool for various applications, offering a creative and engaging experience.

**Highlights:** Physics engine simulation, Random ball generation, Random number generation, Creative utility tool, Automatic subscription option

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lotto Engine 3D Weekly Subs | $1.99 | per 7 days |
| Lotto Engine 3D Lifetime Right | $3.99 | one-time |


## Frequently asked questions

### Is Airro E6B free?

Airro E6B costs $1.99, with no in-app purchases.

### Is Lotto Engine 3D free?

Lotto Engine 3D is free to download, with in-app purchases available.

### Do Airro E6B or Lotto Engine 3D have ads?

Neither Airro E6B nor Lotto Engine 3D shows ads.

### Which is updated more often, Airro E6B or Lotto Engine 3D?

Airro E6B ships an update every 40 months, and Lotto Engine 3D daily. Most recently, Airro E6B was updated on September 12, 2026 and Lotto Engine 3D on September 11, 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.*