# Lotto Engine 3D vs PURIAMI

The clearest difference is in-app purchases: PURIAMI at none against Lotto Engine 3D's 2. Lotto Engine 3D's advantage is update cadence (daily vs every 23 months) and iOS requirement (13.0 vs 15.6). 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. PURIAMI asks for nothing beyond the download.

Lotto Engine 3D ships an update daily, PURIAMI every 23 months. The most recent releases landed on September 11, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Lotto Engine 3D | PURIAMI |
| --- | --- | --- |
| 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 23 months |
| Monetization | Subscription | — |
| Size | 19 MB | 3 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [何均 邓](https://appshunter.io/developer/1621073530) | [PURIAMI AG](https://appshunter.io/developer/1733811793) |

## 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 |


### PURIAMI

[App page](https://appshunter.io/ios/app/puriami/id6478752743)

**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 PURIAMI free?

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

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

Neither Lotto Engine 3D nor PURIAMI shows ads.

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

Lotto Engine 3D ships an update daily, and PURIAMI every 23 months. Most recently, Lotto Engine 3D was updated on September 11, 2026 and PURIAMI on September 9, 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.*