# Storma vs Suntain

The clearest difference is update cadence: Storma at monthly against Suntain's every 4 months. Suntain's advantage is iOS requirement (12.0 vs 26.0). On price, review sentiment, ads and in-app purchases there is nothing between them.

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

Storma ships an update monthly, Suntain every 4 months. The most recent releases landed on October 20, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Storma | Suntain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (12 ratings)](https://appshunter.io/ios/app/storma/id6471424410/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free | Free |
| Size | 72 MB | 54 MB |
| Requires iOS | 26.0 | **12.0** |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Benjamin Pisano](https://appshunter.io/developer/1232617402) | [Jacques DUMAREST](https://appshunter.io/developer/1748816172) |

## What reviewers say

### Storma

[App page](https://appshunter.io/ios/app/storma/id6471424410)

Observe real-time thunderstorms globally with a live map and receive instant notifications for detected storms. Watch storms directly from your iPhone's lock screen or Dynamic Island.

**Highlights:** Real-time lightning strike map, Global storm observation, Customizable storm alerts, Live Activities integration, Lock screen storm viewing

**Features:** Apple Watch app

**In-app purchases:** none


### Suntain

[App page](https://appshunter.io/ios/app/suntain/id6737068522)

Visualize the sun's position and trajectory based on your location and date. Get sunrise and sunset times, including when the sun appears or disappears behind terrain. Access annual data on daylight and sunshine duration.

**Highlights:** Sun position and trajectory visualization, Horizon sunrise and sunset times, Sunrise/sunset behind terrain, Annual sunrise/sunset data, Daylight and sunshine duration, Sunshine duration analysis

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Storma free?

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

### Is Suntain free?

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

### Do Storma or Suntain have ads?

Neither Storma nor Suntain shows ads.

### Which is updated more often, Storma or Suntain?

Storma ships an update monthly, and Suntain every 4 months. Most recently, Storma was updated on October 20, 2026 and Suntain on October 2, 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.*