# Lotto Engine 3D vs Spectroslide

The clearest difference is in-app purchases: Spectroslide at none against Lotto Engine 3D's 2. Lotto Engine 3D's advantage is update cadence (daily vs every 9 months) and iOS requirement (13.0 vs 17.5). On price, ads and device support there is nothing between them.

Both are free to download. Lotto Engine 3D sells 2 in-app purchases, starting at $1.99 per 7 days. Spectroslide asks for nothing beyond the download.

Lotto Engine 3D ships an update daily, Spectroslide every 9 months. The most recent releases landed on September 23, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Lotto Engine 3D | Spectroslide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lotto-engine-3d/id6473097818/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Daily** | Every 9 months |
| Monetization | Subscription | — |
| Size | 19 MB | 2 MB |
| Requires iOS | **13.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [何均 邓](https://appshunter.io/developer/1621073530) | [Eric Hamiter](https://appshunter.io/developer/1482332471) |

## What reviewers say

### 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 |


### Spectroslide

[App page](https://appshunter.io/ios/app/spectroslide/id6677062885)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Lotto Engine 3D free?

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

### Is Spectroslide free?

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

### Do Lotto Engine 3D or Spectroslide have ads?

Neither Lotto Engine 3D nor Spectroslide shows ads.

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

Lotto Engine 3D ships an update daily, and Spectroslide every 9 months. Most recently, Lotto Engine 3D was updated on September 23, 2026 and Spectroslide on October 13, 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.*