# Thunderstorm simulation vs Hellios

The clearest difference is ads: Hellios at none against Thunderstorm simulation's shown. Hellios also leads on update cadence (daily vs every 7 months). Thunderstorm simulation's advantage is iOS requirement (15.0 vs 18.2). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Thunderstorm simulation ships an update every 7 months, Hellios daily. The most recent releases landed on October 1, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Thunderstorm simulation | Hellios |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (27 ratings)](https://appshunter.io/ios/app/thunderstorm-simulation/id1668589893/reviews)** | — |
| Number of ratings | **27** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Daily** |
| Monetization | Ad-supported | — |
| Size | 10 MB | 34 MB |
| Requires iOS | **15.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yaroslav Novytskyi](https://appshunter.io/developer/1668442756) | [Volodymyr Shcherbiuk](https://appshunter.io/developer/1815761531) |

## What reviewers say

### Thunderstorm simulation

[App page](https://appshunter.io/ios/app/thunderstorm-simulation/id1668589893)

Experience the power of storms with this simulator. Create lightning with a tap, control rain and wind, or let the app run in automatic mode for a relaxing visual and auditory experience. Choose from three atmospheric locations.

**Highlights:** Create lightning with touch, Realistic thunder and rain sounds, Automatic storm simulation mode, Control rain and wind, Three scenic locations, Ideal for relaxation and meditation

**Features:** macOS Compatibility

**In-app purchases:** none


### Hellios

[App page](https://appshunter.io/ios/app/hellios/id6753183265)

**In-app purchases:** none


## Frequently asked questions

### Is Thunderstorm simulation free?

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

### Is Hellios free?

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

### Do Thunderstorm simulation or Hellios have ads?

Thunderstorm simulation shows ads; Hellios does not.

### Which is updated more often, Thunderstorm simulation or Hellios?

Thunderstorm simulation ships an update every 7 months, and Hellios daily. Most recently, Thunderstorm simulation was updated on October 1, 2026 and Hellios on September 25, 2026.

---

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